BNSV VALVE

Company

Products

● Surge relief valve
Surge relief valve is composed of main valve, high pressure hydraulic pilot valve, conduit and other parts. It has the functions of automatic hydraulic control and unconditioned opening of water hammer under high pressure. The main valve can be quickly opened and slowly closed, with the function of preventing water hammer of self-closing valve. The surge relief valve is used on the main water delivery pipe of the outlet pipe of the pump. It is close to the source of water hammer, such as check valve and overpressure point of the water delivery pipe. It is externally connected with T-shaped tee, which can discharge the high pressure water hammer unconditionally. It is the protective equipment after the safety of the pump station, which can effectively improve the safety and reliability of the system.

● Y sleeve control valve
Y sleeve control valve is an advanced pipeline control equipment improved and perfected on the basis of introducing and digesting domestic and foreign control valve technologies, which provides a simple solution for pipeline pressure or flow regulation. This series of products are characterized by advanced principle, novel structure, large adjustment range, high adjustment accuracy, simple operation, convenient maintenance, long service life and high cost performance. It is especially suitable for control valves under high inlet pressure, large flow and large pressure reduction ratio. It is widely used in tap water, water supply and drainage, irrigation and drainage, water conservancy and hydropower industries.

● Fixed Cone Valve
The fixed cone valve has a fixed cone, and the fixed cone body design conforms to the hydrodynamic characteristics. The stationary cone is supported by the blade. Due to the guiding effect of the cone, the water flow will diffuse in a wide conical angle when discharged, and decompose into a thin spray shape. At this time, the water flow and the air will be atomized due to a large area of friction, resulting in excellent energy dissipation effect. In the fixed conical valve installed with the cowl, the water is ejected from various orifices and collides with each other. The mutual impact of the water column will basically make the velocity energy disappear. It greatly reduces the impact of the drainage and waterproof flow on the downstream pipelines or watercourses and buildings.

● Midline flanged butterfly valve, midline wafer butterfly valve, lug butterfly valve, pneumatic butterfly valve

● Remotely controlled float valve
The remote control float valve is installed in the water inlet pipes of the pool, water tank and water tower. When the water level reaches the predetermined water level, the valve opens automatically. When the water level drops, the valve opens automatically for water replenishment.

● Pressure relief valve
It is also called overpressure relief valve. It is a valve for safety protection. When the pressure in the equipment or pipeline exceeds the set pressure of the relief valve, it will automatically open the relief valve to ensure that the medium pressure in the equipment and pipeline is below the set pressure, protect the equipment and pipeline from accidents and play an important role in protecting personal safety and equipment operation.

● Diaphragm adjustable pressure reducing and stabilizing valve
The diaphragm adjustable pressure reducing and stabilizing valve is applied to the water supply and drainage pipeline. It is a special valve that reduces the higher pressure at the inlet to a certain required pressure at the outlet.

● Multi-function water pump control valve
The diaphragm multi-function pump control valve is an intelligent valve installed at the pump outlet of the water supply system of high-rise buildings and other water supply systems to prevent the medium backflow, water hammer and water hammer, effectively improving the safety and reliability of the water supply system and preventing the occurrence of water hammer when the pump is started and stopped.

● Electro-hydraulic control valve
The hydraulic control connection system consists of main valve, solenoid pilot valve, needle valve, ball valve, micro filter and pressure gauge. Remote control of valve opening and closing can be realized through solenoid pilot valve. The speed of opening and closing can be controlled with the addition of additional devices. The hydraulic electric control valve uses the pilot valve to control the opening and closing of the valve to save energy. It can replace large electric devices of other valves. Electromagnetic hydraulic control valves are widely used in high-rise buildings, living quarters and other water supply network systems and urban water supply projects.

● Adjustable pressure reducing valve
The adjustable pressure reducing valve is a valve used to regulate the water supply direction in the water supply system in which the fire water and domestic water are connected in parallel. When a fire occurs, the fire fighting needs a lot of water, and the domestic water shall be cut off immediately to ensure sufficient fire fighting water; When the pressure of fire fighting water is reduced, the valve will automatically open and be normally open to recover the domestic water supply. This valve eliminates the need for a separate fire water supply network, greatly saving construction costs and water consumption. High valve control sensitivity, safety and reliability, easy commissioning and long service life.

● Hydraulic check butterfly valve
The hydraulic control check butterfly valve is used at the outlet of the water pump, which can be closed from fast to slow in two stages, which not only prevents the water pump from rotating over speed for a long time, but also avoids or reduces the excessive water hammer caused by the backflow of medium in the pipeline and protects the water pump and the pipeline system. The hydraulic check butterfly valve has two types: heavy hammer type and accumulator type.

● Eccentric ball valve (top mounted), eccentric ball valve (top cover)
Eccentric ball valve is one of the fastest developed valves in recent years. It rotates the valve core and drives the fixed ball cap to open and close the valve. With simple and reliable structure and effective sealing method, it can not only replace gate valve and butterfly valve with more advantages, but also can be applied to the system that cannot be used.

● Hydraulic check eccentric ball valve
The hydraulic control check eccentric half-ball valve is used at the outlet of the water pump, which can be closed from fast to slow, which not only prevents the water pump from over-speed and reversal for a long time, but also can avoid or reduce the excessive water hammer caused by the medium backflow in the pipeline to protect the water pump and the pipeline system.

● Soft seal gate valve, hard seal gate valve

● Axial check valve
The axial-flow check valve is used at the outlet of the water pump. It automatically tracks the moment when the inertia of the water column is exhausted, that is, when the forward flow rate drops to zero, and automatically closes the valve flap so that the water column just stops without any external force being applied. It can effectively reduce the water hammer pressure rise caused by the shutdown of the pump in the pipeline and protect the water pump and the pipeline system. It can also serve as a check in the pipeline.

● Slow-closing check valve 300X
X slow-closing check valve consists of main valve, check valve, needle valve, ball valve, micro-filter and pressure gauge to form a hydraulic control connection system. The hydraulic automatic operation can achieve the best opening or closing speed of the main valve. Prevent water hammer and water hammer to achieve the effect of slow closing and noise elimination. Widely used in high-rise buildings, living quarters and other water supply network systems and urban water supply projects.

● Micro-resistant slow closing check valve
HH44X micro-resistance slow-closing check valve is used for water supply and drainage pipelines. It is installed at the outlet of water pump to prevent medium backflow and eliminate destructive water hammer. It can effectively reduce the closing water hammer pressure of the valve and ensure the safe operation of the pipe network. It features light valve flap, large opening, significant power saving effect, small fluid resistance, novel design of water hammer eliminating mechanism, stable and reliable sealing performance, wear resistance, long service life, stable operation, no vibration, no noise, etc.

● Silent check valve
Silent check valve refers to the automatic opening and closing of the valve clack by the flow of the medium itself, which is used to prevent the reverse flow of the medium from causing destructive water hammer and protect the water pump, pipeline and other equipment. It is also known as check valve, one-way valve, counterflow valve and back pressure valve. It is an automatic valve, mainly applicable to water supply system, drainage system, fire fighting pipeline system, agricultural irrigation system, etc.

● Rubber flap check valve
The rubber flap check valve is composed of three main parts: valve body, bonnet and rubber flap. The rubber flap is made of steel plate and reinforced nylon cloth as the substrate, and the outer layer is made of rubber. The service life of the valve flap can reach 1 million times. Rubber flap check valve adopts full-flow area design, with small head loss, less debris accumulation, easy maintenance and other characteristics. It is mainly applicable to the water supply and drainage system, and can be installed at the outlet of the pump to prevent backflow and water hammer damage to the pump and the pipeline. It can also be installed on the bypass pipe of the inlet and outlet pipes of the reservoir to prevent the pool water from flowing back into the water supply system.

● Backflow Preventer
The backflow preventer is a kind of hydraulic control combination device that strictly limits the one-way flow of water in the pipeline according to the running water supply equipment, especially when the backflow pollution of drinking water pipeline is serious and there is no effective backflow prevention device. Its function is to prevent the backflow of medium in the pipeline under any working condition, so as to avoid the backflow pollution.

● Wafer butterfly double-flap check valve
H76X wafer butterfly double-flap check valve manufactured by our company is composed of valve body, valve disc, valve rod and spring, etc., and adopts wafer connection. Due to the short closing stroke of the disc and the spring loading, the water hammer phenomenon can be significantly reduced. The valve is mainly applicable to urban, industrial and high-rise building water supply and drainage pipe network. Because its construction length is shorter than that of the general check valve, it is most suitable for places with limited installation space.

● Three-in-one check valve
Three-in-one check valves are generally installed on the pump outlets of water supply and drainage, cooling water treatment, boiler condensate and secondary water supply pipelines of buildings and factories to prevent the medium in the pipeline from flowing back due to the shutdown of the pump.

● Two-way double eccentric soft seal butterfly valve
Two-way double eccentric soft seal flange butterfly valve is a new type of flange butterfly valve developed by our company based on the eccentric principle and advanced technologies at home and abroad. It is characterized by small operating torque, labor-saving and light weight, convenient maintenance, two-way sealing, long service life, etc. Suitable for long-distance water supply, municipal water supply and drainage, building water supply and drainage, sewage treatment, industrial and agricultural water systems.

● Composite exhaust valve
The composite exhaust valve has the dual functions of large intake, exhaust and continuous micro exhaust, with large exhaust volume, stable performance, safety and reliability, etc. It is widely used in municipal water supply and long-distance water transmission projects.

● Buffered air valve
Due to pump shutdown and other reasons, the water column in the pipeline breaks off and separates, forming negative pressure. The negative pressure will pull back the separated water column to produce impact, forming a water-break bridging water hammer. The buffer air valve developed by our company has the functions of staged exhaust and prevention of cutoff and water hammer. Through an adjustable buffer device, the valve controls the exhaust of the exhaust valve, realizes the functions of staged exhaust, preventing impact water hammer, preventing interruption and bridging water hammer, and is a functional air valve suitable for complex water conveyance system.

● Vacuum air admission valve
When the pressure system water column breaks to form vacuum, the vacuum air admission valve opens quickly to supply air to the system and limit the vacuum pressure within the safe design of the system, so as to protect the equipment.

● Smart air valve
The air valve is an important guarantee for the safe and energy-saving operation of the water pipeline. But the air valves used in many urban pipe networks and water conservancy and water conveyance projects are all ears of the deaf-equipment, so pipe burst and other accidents occur frequently. The intelligent air valve developed by our company can monitor the status of the air valve, so as to judge whether the air valve operates normally, and even diagnose the design of the entire system. Our company also provides the air valve monitoring software platform, which can be connected with the central control room.

● Piston-type flow and pressure regulating valve
Piston-type flow and pressure regulating valve is a new kind of regulating valve product. It has a variety of control functions, such as water level control, decompression, check, pressure relief, flow control, pipe break closing, etc. Its diameter ranges from 200mm to 2400mm, pressure rating from PN10 to PN100, and pressure difference between inlet and outlet can reach 40kg/cm2. It not only fills the gap of large diameter control valve, but also fills the gap of high pressure and large pressure difference control valve. It is widely used in water conveyance, municipal pipe network, water plant and other fields.

● Differential pressure monitoring blow-off valve
The differential pressure monitoring type burst shut-off valve is generally installed near the important area to be protected on the water transmission pipeline with power supply along the pipeline. When the pipeline is in normal condition, the burst shut-off valve is opened. When the pipe burst accident occurs, the burst shut-off valve senses the differential pressure change and sends the signal to the control system. The control system controls the valve to close automatically to cut off the pipeline and prevent the pipe burst from causing huge disasters.

● Hydraulic automatic tube bursting shut-off valve
The automatic hydraulic pipe blasting shut-off valve is generally installed near the important area to be protected on the water transmission pipeline without power supply along the pipeline. When the pipeline is in normal condition, the pipe blasting shut-off valve is opened. When the pipe blasting accident occurs, the pipe blasting shut-off valve senses the change of flow rate and can be automatically closed to cut off the pipeline and prevent the huge disaster caused by pipe blasting.

● Rubber flexible joint
Rubber flexible joint is commonly known as flexible rubber joint. Rubber joint is a kind of rubber product used for flexible connection between metal pipes. It is widely used in water, electricity, chemical industry and ship berthing systems. Its main performance is high pressure resistance, good elasticity (axial, transverse and angular displacement), noise reduction, light weight, vibration reduction, convenient installation, flexible use and easy disassembly and maintenance.

● Double-flange power transmission joint
The double-flange power transmission joint is composed of flange loose expansion joint, short pipe flange, power transmission screw and other components, which can reduce the pressure thrust (blind plate force) of the connected parts and compensate the pipeline installation error. The double-flange power transmission joint cannot absorb the axial displacement. Double-flange power transmission connection is mainly used for loose connection of pump, valve and other accessories.

● Double-flange limit expansion joint
Double-flange limit expansion joint is composed of main parts such as body, sealing ring, gland, expansion spool, etc. It has a limiting device and is locked with double nuts at the maximum expansion. The pipeline can expand and contract freely in the allowable expansion and contraction amount. Once the maximum expansion and contraction amount is exceeded, the limit will be reached to ensure the safe operation of the pipeline. It is especially applicable to the connection of the pipeline with vibration or a certain slope and bend.

● Water Hammer Eliminator
The water hammer elimination tank is an effective active water hammer protection device. It prevents negative pressure generation by means of water replenishment to the pipeline, solves pump shutdown water hammer and cut off and bridge water hammer from the source. When the positive pressure is returned from the downstream of the pipeline, the gas in the tank is compressed, so as to suppress the peak positive pressure. It can completely replace the traditional two-way surge tank. The Water Hammer Eliminator Tank is known informally as the "Water Hammer Guardian.".

● Y filter
Y filter is a kind of filter device in the pipeline, used to remove impurities in the medium to protect the normal use of valves and equipment. It can be installed horizontally or vertically.

● DIFFUSION FILTER
The diffusion filter is a new type of filter installed at the inlet of the water pump. In addition to the function of filtering impurities, it also has the functions of stabilizing the water flow, preventing cavitation, improving the efficiency of the water pump and prolonging the service life of the water pump. The diffusion filter at the suction inlet can diffuse the flow direction, reduce the flow velocity in the pipeline, appropriately reduce the flow velocity during the flow process, and disperse and evenly distribute the flow velocity through the internal guide plate, so as to ensure the long-term stable operation of the pump.

● Seawater sludge valve
The seawater sludge discharge valve is an angle block valve with hydraulic source or pneumatic source as the actuator, which is usually installed in rows on the outer wall of the bottom of the sedimentation tank to discharge the sediment and dirt settled at the bottom of the tank. Diaphragm quick-opening sludge discharge valve is divided into two chambers by nylon reinforced rubber diaphragm, connected with hydraulic or pneumatic source, and controlled by electric or manual two-position four-way reversing valve to realize fast sludge discharge. The valve replaces the piston with diaphragm without moving friction, and is more suitable for slurry and other granular media, greatly improving the service life of the valve.

● Seawater resistant soft-sealed butterfly valve
The optimized design of butterfly plate can effectively increase the flow area of butterfly valve and reduce the fluid resistance; Appropriate butterfly plate seal rings can be selected according to different working conditions to ensure that the valve will not have internal leakage within one maintenance period; The valve body, butterfly plate, compression ring and other parts are made of carbon steel, which effectively reduces the manufacturing cost. All parts contacting with the medium are coated with ceramic and other wear-resistant and anti-corrosion coatings, which can increase the seawater corrosion and scouring resistance of the valve; The valve shaft sleeve is made of duplex stainless steel, and the interference fit is adopted with the shaft hole on the valve body, so as to effectively prevent the seawater from corroding the shaft hole of the valve body; There is a retainer between the valve rod and the shaft sleeve. Its function is to prevent seawater from infiltrating between the valve rod and the shaft sleeve and eliminate seawater corrosion to the valve rod and the shaft sleeve. At the same time, the mud and sand in the seawater are prevented from penetrating into the gap between the valve rod and the shaft sleeve, causing the occlusion of the valve rod and the shaft sleeve, effectively improving the service life of the valve; Wear-resistant EPDM or overlaying duplex stainless steel can be used for the sealing surface of valve seat, which can resist abrasion and erosion and effectively improve the sealing reliability of valve; Live load combined packing, i.e. V-type PTFE+V-type EPDM packing, is used to ensure that the valve will not leak in one overhaul period.

● Ball valve
The main feature of the ball valve is that it can be reliably shut off not only in the forward pressure, but also in the reverse pressure or the reverse pressure far more than the forward pressure. For the two sealing surfaces of the sealing pair, such advanced processes as space plasma spraying, Ethernet laser sputtering and vacuum protection infiltration overlay welding can be used according to different hardness requirements to form such gradient functional materials as martensitic stainless steel, austenitic stainless steel, hard alloy, cermet, synthetic diamond, etc. Automatic centering and automatic over-travel compensation for wear. When closing, fully utilize the energy of the medium in the ball valve and automatically apply extremely high sealing specific pressure, so as to achieve reliable zero leakage of the high hard sealing pair. There is no friction between the instantaneous closing and instantaneous opening sealing pairs. The main structure of the ball valve is similar to the butterfly valve, which has the characteristics of short structure and small volume of the butterfly valve, so it can manufacture the valve with oversized diameter and oversized diameter.

● Seawater resistant hard seal butterfly valve
With the accelerated development and utilization of ocean, a large number of coastal nuclear power projects and the promotion of seawater desalination industry, the application of seawater resistant butterfly valves has been more and more widely. The Company produces seawater resistant butterfly valves suitable for marine industry, nuclear power seawater cooling and other industries.

● Hydraulic inlet ball valve of heavy hammer turbine
The hydraulic control system adopts the heavy hammer for energy storage. When the power supply of the hydropower station is cut off, the heavy hammer releases energy, which can realize the emergency hydrodynamic closing of the ball valve and provide sufficient safety guarantee for the safe operation of the unit. Wide range of applicable heads, which can reach head above 1000m. The fluid resistance is small, and the ball valve is the one with the minimum fluid resistance among all valves. Even for the reducing ball valve, the fluid resistance is quite small. The switch is fast and convenient. As long as the valve rod rotates 90 °, the ball valve can be fully opened or fully closed, and it is easy to realize fast opening and closing.

● Hydraulic inlet ball valve of turbine
The inlet ball valve is mainly composed of valve body, valve, valve shaft, bearing, sealing device and valve operating mechanism. The sealing device includes working seal and maintenance seal (one sealing structure is provided at the front and rear of one ball valve, the front one is used for maintenance and the rear one for operation). It can be divided into single-side sealing ball valve and double-side sealing ball valve according to different leak-tight devices (a water seal for maintenance shall be provided at the upstream side of the valve).

● Hydraulic butterfly valve for turbine inlet
The hydraulic butterfly valve for turbine inlet is the most widely used turbine inlet valve, which is applicable to the penstock in front of the turbine. There are two types of butterfly valves: vertical shaft (the position of valve shaft is vertical) and horizontal shaft (the position of valve shaft is horizontal). The lower bearing of vertical shaft butterfly valve is easy to deposit sediment, so it shall be cleaned regularly, or the lower bearing will be worn quickly, causing valve subsidence. Therefore, the horizontal shaft butterfly valve is generally preferred.

● Fire deluge alarm valve
The deluge alarm valve is composed of deluge alarm valve body parts, pressure switch, hydraulic alarm bell and pipeline accessories. Deluge alarm valves are widely used in open spray system, water curtain system and water mist system. The deluge sprinkler system is composed of fire detection device, open system sprinkler, system pipe network and necessary pipeline accessories.

● Fire wet alarm valve
As a check valve, the wet alarm valve can prevent water in the pipeline system from flowing back to the water supply system. The wet alarm valve is an important component of the wet automatic sprinkler system, mainly composed of alarm valve, hydraulic alarm bell, delayer, pressure switch, pressure gauge, drain valve, test ball valve, etc.

● Fire handle butterfly valve
The handle butterfly valve has the advantages of fast installation, simple and reliable, light weight, flexible operation and convenient maintenance. Good sealing performance and fast connection with pipe fittings.

● Fire signal butterfly valve
The worm wheel and worm gear are used for transmission, and then the cam rotates to press down or release the contact on the signal device according to the preset position, and corresponding "on" and "off" electrical signals are output to display the opening and closing status of butterfly valve.

● Fire clamp handle/turbine butterfly valve
It has the advantages of fast, simple, safe, reliable installation, no limitation of the installation site, convenient maintenance of pipes and valves, vibration isolation and sound insulation, overcoming the deviation caused by different pipe connection shafts within a certain angle range, solving the thermal expansion and cold contraction caused by temperature difference, etc.

● Fire clamp pressure reducing valve
It is an intelligent valve used in domestic water supply, fire water supply and other industrial water supply systems to regulate and control the pipeline pressure by using the energy of the medium itself. The outlet pressure of the king valve can be adjusted by adjusting the pressure reducing pilot valve. The outlet pressure varies without the change of inlet pressure and inlet flow. The outlet pressure can be safely and reliably maintained at the set value, and the set value can be adjusted according to the need to achieve the purpose of pressure reduction.

● Fire clamp remote control float valve
The valve is composed of main valve and external guide valve. It uses the float ball in the water to connect the guide valve due to the change of the liquid level to make the main valve supply water and close, so as to control the water level of the pool (tank) and the water tower within a certain range to prevent overflow and low water level.

● Fire rising stem gate valve
Rotate the hand wheel to raise or lower the valve plate connected with the valve rod through the advance and retreat of the thread between the hand wheel and the valve rod to achieve opening and closing. The opening and closing component of rising stem gate valve is the gate plate. The movement direction of the gate plate is vertical to the fluid direction. The rising stem gate valve can only be fully opened and fully closed, and cannot be adjusted and throttled.).

● Fire non-rising stem signal gate valve
Rotate the hand wheel to raise or lower the valve plate connected with the valve rod through the advance and retreat of the thread between the hand wheel and the valve rod to achieve opening and closing. Reliable sealing, even at low temperatures. Simple shape, short structure length, good manufacturing process and wide application range.

● Fire clamp rising stem gate valve
The valve stem nut is on the bonnet or support. When opening and closing the gate, rotate the valve stem nut to lift and lower the valve stem. This structure is beneficial to the lubrication of the valve stem, with obvious opening and closing degree, so it is widely used.

● Fire clamp signal gate valve
The top-mounted structure reduces the connecting bolts of the valve body under high pressure and large diameter, enhances the reliability of the valve and overcomes the influence of the system dead weight on the normal operation of the valve.

● Heating hard seal gate valve
Hard seal gate valve is one of the earlier invented valves. The gate plate is squeezed against the valve seat by the rotating force of the hand wheel to form a forced seal, so as to ensure the sealing performance of the sealing pair. The two sealing surfaces of the gate are wedge shaped, with the same degree as the valve seat. The movement direction of the gate is perpendicular to the fluid direction and wedge with the valve seat to achieve the sealing specific pressure. The sealing meets the national standard. Copper alloy sealing surface has good corrosion resistance and high temperature resistance. It can be used in the working condition where rubber cannot be used. It is applicable to fire fighting, industrial and other water systems. It can be used to connect or cut off the pipeline device, and has the functions of maintenance valve, switch valve, vent valve, etc.

● Wafer butterfly double-flap check valve for heating
H76X wafer butterfly double-flap check valve manufactured by our company is composed of valve body, valve disc, valve rod and spring, etc., and adopts wafer connection. Due to the short closing stroke of the disc and the spring loading, the water hammer phenomenon can be significantly reduced. The valve is mainly applicable to urban, industrial and high-rise building water supply and drainage pipe network. Because its construction length is shorter than that of the general check valve, it is most suitable for places with limited installation space.

● Swing check valve for heating
H44H and H44Y swing check valves are automatically opened and closed by the force generated by the flow of the pipeline medium itself, and belong to an automatic valve. The check valve is used in the pipeline system, and its main function is to prevent the reverse flow of the medium, the reverse rotation of the pump and its driving motor, and the release of the medium in the container. Check valves can also be used to provide makeup to auxiliary systems in which pressure may rise above the main system pressure.

● All-welded ball valve
All-welded ball valve, without external leakage, etc. The machining process of the sphere is tracked and detected by the computer detector, so the machining accuracy of the sphere is high. As the valve body material is the same as the pipe material, there will be no uneven stress, deformation due to earthquake and vehicles passing through the ground, and the pipe is resistant to aging. The seal ring body is made of RPTFE with 25% Carbon to ensure no leakage (0%).

Applications