SMC 685 Series Polypropylene Poppet Check Valve 1/2″ x 1/2″ (6850090)

Description

PRODUCT DOCUMENTATION

• SMC 685 Series Check Valve Spec Sheet

The SMC 685 Series poppet check valve features a thin elastomer disc supported by a poppet that seals against the seat. Pressure in the flow direction lifts the seal from the seat at approximately 1/3 psi before sufficient pressure moves the poppet away from the seat. The maximum operating pressure of 125 psi allows use across a wide range of air and fluid applications.

FEATURE AND BENEFITS

• The 685 poppet check valve uses a thin elastomer disc supported by a poppet that seals on the seat
• Maximum operating pressure of 125 psi supports a broad range of air and fluid applications
• Compact construction with light cracking pressure, high flow capacity, and a positive seal at very low back pressure or slight vacuum
• Supplied with an embedded O-ring poppet for cracking pressure applications of 1/2 psi and above
• Hastelloy® spring material provides excellent chemical resistance

SPECIFICATION

• Part Number: 6850090
• Material: Black glass-filled polypropylene
• Inlet/Outlet: 1/2″ Female NPT
• NSF certified