Check Valves

Check Valves

DFT Nickel-Aluminum Bronze Check Valves Meet Demands of Harsh Sea Environments

Exton, PA, - DFT Inc., an industry leader in manufacturing silent, axial flow check valves for more than 65 years, also produces highly durable and reliable nickel-aluminum bronze (NAB) valves for tough seawater applications. DFT manufactures a full line of axial flow, non-slam check valves using carbon steel and stainless steel, but the company's NAB valves are highly effective when used in...

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PVC Wafer Check Valve comes in 4, 6, and 8 in. sizes.
Check Valves

PVC Wafer Check Valve comes in 4, 6, and 8 in. sizes.

Operating at max pressure of 150 psi, PVC wafer check valves install on discharge side of pumps in applications such as aquariums, water attractions, water treatment, and municipalities to prevent back-flow flooding that could damage pump systems. Body, disc, and stopper assembly are machined from solid, chemical-resistantÂ- PVC plate stock, which conforms to ASTM D1784 Cell Classification...

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Plastic Fittings feature check valve cartridge inserts.
Check Valves

Plastic Fittings feature check valve cartridge inserts.

Standard Plastic Fittings are available with spring loaded check valve cartridges made of nylon or polypropylene with O-ring seal consisting of Buna-N, Viton, EPDM, or Silicone. Cracking pressures range from 3 in. H2O to 10 psi. Also offered, free floating ball cartridges are made of polypropylene with EPDM ball. Less than 1 psi is required to open valve, and both normal and reverse flows are...

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Wafer Check Valves are designed for optimal flow properties.
Check Valves

Wafer Check Valves are designed for optimal flow properties.

WCV Series Full Pattern Wafer Check Valves feature all-thermoplastic, injection molded construction, including angle seat and disc design that promotes flow capacity. Also, full pattern design eliminates need for spacers or specialty flanges. Available in 2-8 in. sizes in PVC and CPVC materials, valves have max pressure rating of 150 psi non-shock at 70°F and will fit ANSI150 and PN10...

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Check Valves

AutomationDirect adds Air Pilot and Manual Control Valves to Product Line

The NITRA® line of pneumatic products has been extended to include air pilot valves, foot pedal valves, and manual control valves. The AVS-5 series now includes single and double-pilot directional control air pilot valves, offering spring return or center closed operation. All are body ported five-port (four-way) spool valves and are available in 1/8 to Â-½" NPT port sizes with flow...

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Check Valves

Circle Seal 200 Series Out Performs the Competition

Circle Seal 200 series out performs the competition in both check and relief valve applications. When selecting a check valve or relief valve that requires a low crack pressure and high flow rate, consider a Circle Seal 200 series solution. This style of valve works better than most check valves for several reasons: Quick opening/positive closing Bubble tight Large flow capacity Operating...

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CVT Technical Support - Selecting The Right Valve
Check Valves

CVT Technical Support - Selecting The Right Valve

One of the key elements in selecting the right check or relief valve is Flow Capacity. This essential element is often not given enough consideration, especially when a replacement valve is being specified. Because of this, a common problem that arises is the valve will be over-sized for the application. When the flow is insufficient to keep the valve open, it will chatter" and may result in...

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Pilot-Operated Check Valves feature 0-300 psig pressure range.
Check Valves

Pilot-Operated Check Valves feature 0-300 psig pressure range.

Featuring poppet design, JPC Series works as standard check valve, but can be opened with air pilot signal to permit free flow in normally checked position. Units are constructed of ENP brass, anodized aluminum, and stainless steel with Buna-N seals. With temperature range of 32-230°F, valves operate with air, water, or oil as medium. Auxiliary port facilitates plumbing, while side port...

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Submersible Pump Check Valve has corrosion-resistant design.
Check Valves

Submersible Pump Check Valve has corrosion-resistant design.

Designed for use with variable-frequency drive (VFD) control submersible pumps, Model 80DI VFD check valve minimizes flow losses and hydraulic shocks in pumping system. Standard epoxy coated (NSF® approved powder) ductile iron body supports deep set pumps, and stainless steel guided poppet system ensures valve automatically adjusts noiselessly between flow rates. Valve seat radius allows...

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