A430, 3/8" Hose Barb Diaphragm Check Valve

3/8" Hose Barb Diaphragm Check Valve, Viton™ Diaphragm, Black Nylon Body

A highly reliable, normally open diaphragm check valve that can be installed in any position. This allows the greatest flexibility when you need backflow protection for a vacuum, gas or liquid system.

The free-floating diaphragm reacts to the slightest difference in pressure across the valve giving it a very rapid response time between free-flow and no-flow conditions.

High quality, automotive grade OEM diaphragm check valves.

• Cracking pressure: 0.04 psig maximum
• Closing differential: 0.07 psig maximum
• Maximum operating temperature: 250°F
• Flow rate: 160 CFH (2.7 CFM) minimum at 6.4 psig*
• Sealing pressure: 3 psig back pressure required for a tight seal

*CFH is cubic feet per hour and CFM is cubic feet per minute.

Materials:

Nylon is a strong, stiff plastic that provides excellent resistance to chemicals and hydrocarbons. These includes oils, lubricants, gasoline, kerosene and diesel fuel.

Viton™ (FKM or FPM) rubber diaphragms have an excellent operating temperature range. FKM is also resistant to a wide range of chemicals including ozone, mineral oils and greases, aliphatic (non-aromatic), aromatic and chlorinated hydrocarbons, gasoline, diesel fuels, silicone oils and grease. It also has excellent resistance to oxidation aging.

We recommend checking chemical compatibility and requesting samples for testing in real operating conditions.