Check Valve Industrial Check Valve for Sale Trust BST Valves to provide you with high quality swing check valves and a variety of different check valves for all your backflow prevention needs. What is a check valve? Check valves are used to ensure that gases and liquids flow in only one direction. They essentially prevent the process flow from flowing back, thus forcing the valve to close. Correct flow pressure forces the check valve open, while reverse flow causes the valve to close. Flow check valves open at the designed minimum flow or cracking pressure so that the valve can begin operation. Check valves protect the system from pressure fluctuations that can cause damage to pumps and pipes and help operate efficiently. Check valves are required to stop backflow and protect rotating equipment and machinery from sudden backflow surges that may occur. BST Valves is a manufacturer specializing in check valves, offering industrial check valves in a variety of configurations and materials, including Cast Steel Check Valves and Stainless Steel Check Valves. Our check valves are industry proven for use in a wide range of applications from oil and gas to pulp and paper.
BRAND: "RING" Bronze/brass swing check valves (thread-end) cast iron/ductile iron/stainless steel/cast steel/forget steel swing-type check valves Bronze/cast iron/ductile iron/stainless steel non-slam check valves
Our check valves are designed to prevent reverse flow. Concentric and eccentric styles as well as our tapered disk design are available for horizontal, vertical applications and are working well without leaking while getting a return pressure. Our special designed check valve can be using for many applications in such as food, dairy, beverage, pharmaceutical, chemical, and many other industries.The materials are offered for food, dairy, beverage, pharmaceutical, chemical, and many other industries.Specifications:body:ss 316. Ss304 and ss316l are required based on big volume.Fully precision machined by cnc machine.Angle design make the biggest flowing liquid as well as for disk easy open and close.Connection: clamp end, weld end, male end and female end are available from 1/2 quot, 3/4 quot up to 4 quot.Connection: weld end are available the tubing according to 3a, sms, rjt(bs), din 11851.Middle clamp designed are available from 1/2 quot, 3/4 quot up to 3 quot.Middle flange designed are available from 1/2 quot, 3/4 quot up to 4 quot.Type of ends available:3a: clamp, weld, bevel male and female are available from 1/2 quot up 4 quotsms: weld end, male and female end are available from dn25 up to dn104.Din: weld end, male and female end are available from dn28, dn34, dn52, dn70, dn85 and dn101.6, dn104.I-line: available from 1 quot up to 4 quot.Spring:stainless steel sanitary both closing design, both opening design is required.Seal ring of stem:epdm. Viton or silicon is required.Body o-ring:nbr or epdm. Viton is required.Working temperature:-10o ~ 120o (epdm seal)features:opening pressure:1/2 quot-0.09 bar3/4 quot-0.23 bar1 quot-0.75 bar1.5 quot-1.3 bar2 quot-0.44 bar2.5 quot-0.68 bar3 quot-0.33 bar4 quot-0.42 barworking pressure:open pressure as above and max. Working pressure 10 bar. Each pc by shrink, 120pcs per carton, finally in plywood box
China Non-Surge Check Valve Manufacturer Shinjo Supplies 300X Non-Surge Check Valve, Cast iron, Ductile iron, WCB. 300X Non-Surge Check Valve closes automatically in case of prevent mediums back-flow. The Non-Surge Check Valve allows flow when inlet pressure in higher than the outlet pressure. The valve has the principal of slow-open, quick-close and slow-close into one to prevent water hammering when the pump starts or closes. Non-Surge Check Valve opens and closes at controlled speed to ensure smooth flow. Used on the pump outlet of a water supply system to prevent mediums back-flow, water hammer and water shock. It has three functions as an electric valve, check valve and water hammer remover. z
Cast steel Swing Check valve The swing cast steel check valve is a one-piece body, top entry design for reliable operation and extended seat seal life. Description The swing check valve is a one-piece body, top entry design for reliable operation and extended seat seal life. Top entry construction allows field service and in-line maintenance if necessary. All major components of the check valve are normally made from cast and wrought forms, allowing the use of a variety of widely accepted materials. Swing Check Valves are full bore. The full bore to API-6D assures unrestricted flow and allows pigging and hot tapping.
Swing Check Valve Company in China: Carbon Steel Swing Check Valve, DN25-DN400, Pressure 1.6-25 MPa, Carbon Steel Body, Bonnet, Disc. Product name: Carbon Steel Swing Check Valve. Size: DN25-DN400. Working pressure (MPa): 1.6-25. Proper temperature: 425 or 550 Suitable media Water, steam, oil, or weak corrosive medium. Body, bonnet, disc: Carbon steel or Chrome Nickel-titanium Stainless Steel. Sealing surface: Carbon steel surfacing iron-based alloys or body sealed.
Wafer Type Lift Check Valve The wafer type lift check valve is suitable for the working temperature of -196~540, to prevent backflow of medium. According different materials, the wafer type lift check valve can be applied to various medium, such as water, steam, oil, nitric acid, acetic, strong oxidizing medium and urea in petrochemical, metallurgy, electric power, light industry and food industries. Different from flange type lift check valve, the wafer type lift check valve has characteristics of short structure length, small volume, light weight, small water hammer pressure, convenient installation, etc. Specification: ï,Size: 2~36 ï,Pressure Rating: Class150~2500LB ï,Main Materials: WCB, WC6, WCC, LCB, CF8, CF8M, CF3, CF3M, 4A, LF2, F304, F316 etc. ï,Design and Manufacture: API 594 ï,Face-to-Face: API 594, API 6D ï,Pressure-temperature Ratings: ASME B16.34 ï,Ends Connection: Wafer ï,Inspection & Testing: API 598, EN12266 Feature: ï,Safe and Reliable Sealing ï,Lug Wafer Type or Wafer Type ï,Lift or Piston Type ï,With Spring Simple and Compact
Body PC Inner Silicone Type Diaphragm/Luer lock Opening Pressure 0-1 Kpa Back Pressure =300 Kpa Common Inner Material Silicone/NBR/VITON/FVMQ/EPDM Common Body Material PP/ABS/PA66/PVDF Experience 5-year History Certificate ISO9001: 2008 Our factory support OEM/ODM, confirm the details as follows, then we will help you design a perfect valve or we can introduce a similar valve that in stock: 1) Where does the valve you use in? 2) What kind of medium the valve come into contact with? Water, air, gasoline, lubricator or other? 3) What is your using temperature? Note: The 1)2)3) will make us choose the best material to make the valve for you. 4) What is the working pressure about the valve you require? 5) What is the rate of flow? 6) What is the opening pressure? 7) What is the max back pressure? 8) What is the approximate size of the valve? Such as diameter, ID and OD. 9) What is your annual quantity?
Stell lift-type check valve.
Cast iron lift check valve, pn16 Application 1face to face is according to din3202-f1 2flange drilled is according to din2532/2533 Test Working pressurepn10pn16 Shell pressure15bars24bars Seat pressure11bars17.6bars Main parts and materials Numberpart namematerial 1bodycast iron 2bonnetcast iron 3discductile iron 4seatstainless steel Main dimensions Dndd1d2ln-d 159565451304-¦õ14 2010575581504-¦õ14 2511585681604-¦õ14 32140100781804-¦õ18 40150110852004-¦õ18 501651251022304-¦õ18 651851451222904-¦õ18 802001601383108-¦õ18 1002201801583508-¦õ18 1252502101884008-¦õ18 1502852402124808-¦õ23 20034029526860012-¦õ23 25040535532073012-¦õ27 30046041037885012-¦õ27
This is the puppet design which will work in horizontal & vertical applications. In general spherical type check valve will get damage due to the floating in liquid the result is, it lose its shape. Sizes available from 1 4.
carton box with pallet
Duckbill check valves, widely used in the demanding applications of many industries, are precision-molded, one-piece elastomeric valves that provide reliable backflow prevention at low pressure differentials. Duckbill check valves allow free flow with positive differential pressure. With negative differential pressure, backflow is checked. Pressure drop across the valve is a feature unique to duckbill check valves. They can be designed to operate in a few millimeters (inches) of water to several hundred kpa (psi), depending on valve size, geometry and compound characteristics. Duckbill check valves are also designed to start functioning at specific opening and closing pressure ranges, depending on your specifications. •normally open one-way check valves •prevents backflow leakage when minimal backpressure is applied •can be installed easily into hole and sealed by compressing flange Duckbill check valve features: Reliable backflow prevention 100% elastomeric construction eliminates maintenance Will not corrode, warp or freeze open or shut 1”-2” cracking pressure, low head loss Curved bill enhances sealing around debris Custom built for each application based on pressure and flow conditions Available in diameters from 1/2" (12mm) to 96” (2400mm) Note: 1. The inner diameters are matched to the pipe outer diameter on which installed. 2. The weight is approximate. 3. The dimensions are not integrated in the above table, contact liangda for more information. 4. We can make duckbill valves with any dimensions rubber flange available as per requirement. 5. Pcs are the number of half part of the clamps. 6. The usual material of the clamp is stainless steel 304, other material availble upon request. 7. Duckbill valves of dimensions in the above table are available in inventory. Any other dimensions and designs available upon request. Plastic bags , wooden box , or as requested
Sdyx-ds series check calves allow free flow in one direction and block flow in the counter direction.
SDYX-RVP series check valves allow free flow in one direction and block flow in the counter direction.The valve connection is subplate mounting.
Pipe Wall Thickness: According to the size Pull Strength: 100 Yield (≥ MPa): According to the size Material: Ductile Iron Type: Welded. Minimum Order Quantity: 500 Piece/PiecesTrial Order Port: Qingdao Packaging Details: Exporting standard packing Delivery Time: 30 days or as customers requirement Payment Terms: T/T FM&UL Certified. Standard export packing.
Cast iron swing check valve, bronze trim, flange end 1. Conforms to mss sp-71 2. Flanges drilled to ansi b16.1(125 lb) 3. Face to face dimensions conform to ansi b16.10(125lb) 4. Working gressure: 125s, 200 wog 5. Suitable media: water, oil, gas
1. Flange dimensions conform to din 2533 2. Face to face dimensions conform to din 3202 f6 3. Testing conform to din 3230 Woodcage
Buy hydraulic cartridge check valve samples 3 times a year, and hit AAK with a big order for the fourth time 1 year ago, Ferdinand from Germany left a message on AAK Hydraulic Valve website: Is there a hydraulic cartridge check valve equivalent to HydraForce? Ferdinan bought two hydraulic cartridge check valve samples from the model number I provided, then there was no news. Three months later, he bought another two samples of hydraulic cartridge check valves equivalent to SUN. Six months later, he sent a customized hydraulic cartridge check valve drawing and brought 6 samples, there was no email for 6 months. I think it's a bit abnormal, but if something is abnormal, there must be evil. He bought hydraulic cartridge check valve samples from AAK 3 times a year to test my patience and inspect the manufacturing quality of AAK. I can only comfort myself in this way. Last month, Ferdinand sent an email asking about the lead time for 1,200 pcs of hydraulic cartridge check valve customized last time. I knew that AAK had passed the investigation period of German customers. After communication, I learned that the hydraulic cartridge check valves that he purchased in Ningbo 2 years ago, were tested with 6 hydraulic valve manufacturers before and after. Either the first sample was OK, but the second one was not up to standard; Either the existing valve was tested OK, but the customized valve was abnormal. Time was wasted and delayed their equipment development. It turns out that Ferdinand was feared by some hydraulic valve manufacturers, so he was prudent to select new hydraulic valve manufacturers. This time, they will develop a hydraulic boarding bridge, which requires non-standard hydraulic cartridge check valves. From trial order to large order, AAK has been investigated for more than 1 year. Ferdinand said that the manufacturing quality of AAK hydraulic valves, whether the ones benchmarking international brands or non-standard customized ones, had been recognized by their engineers for their functions and performance, so they decided to place large quantity order of hydraulic cartridge check valves. The reason why AAK hydraulic cartridge check valve is different from other hydraulic valve manufacturers in Ningbo is that we insist on the quality of manufacturing. 1. Not make do with the equipment. No matter CNC machining center or machine tool, only high-precision ones are selected. At the same time, the fixture is upgraded and modified by ourselves, eliminating human error. 2. Materials should be paid attention to. Different kinds of imported high carburized bearing steel should be combined with AAK's proprietary heat treatment process. The hardness of the material has gone up several steps, and its wear resistance has been improved by more than 3 times. The thermal stability and compressive strength of materials have been far ahead of other hydraulic valve manufacturers.
Ductile Iron Swing Check Valve
