G3/4'' PA Check Valve NBR 0.03-6bar (0.44-87psi) [8 Pieces]

G 3/4 inch check valve made of polyamide (nylon) with an NBR seal. The minimum differential pressure across the non-return valve must be higher than 0.03 bar (0.44 psi). The valve has a spring to close the valve when the flow is below the minimum pressure and to prevent backflow. The maximum operating pressure is 6 bar (87 psi). The valve is suitable for operating temperatures between -25 and 90° C (-13 to 194° F). The Kv-value is 10.5 m3/h (175 l/min @1 bar pressure). In imperial units: Cv = 12.14 GPM @ 1 psi pressure.

Pros:

• NBR can be used with water, air, oil, solvents and alcohol
• The fibre reinforced Nylon is inexpensive and provides reasonable mechanical and chemical properties
• The disc and spring are made from 316 stainless steel

Cons:

• The maximum pressure is 6 bars (87 psi)
• NBR is unsuitable for brake fluid and polar solvents. EPDM or FKM are suitable alternatives in this case
• A backpressures of >0.1 bar is required for reliable sealing. We do not advise this valve to be used as a foot valve

Check valve series

The Mondeo Amita series is a plastic check valve made from fibre reinforced Polyamide (Nylon). They are available from G1/2 inch up to G 1 1/2 inch. Nylon material provides a lightweight and cost-effective alternative to stainless steel or brass for lower demanding applications.