SMC 687 Series Polypropylene Poppet Check Valve 3/4″ x 3/4″ (6870090)

Description

PRODUCT DOCUMENTATION

• SMC 687 Series Check Valve Spec Sheet

The SMC 687 Series poppet check valve uses 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 enough pressure moves the poppet away from the seat. A maximum operating pressure of 125 psi supports a wide range of air and fluid applications.

FEATURE AND BENEFITS

• The 687 Poppet Check Valve incorporates a thin elastomer disc supported by a poppet that seals on the seat
• Maximum operating pressure of 125 psi supports a wide range of air and fluid applications
• Compact design with light cracking pressure, high flow rate, 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 higher
• Hastelloy® spring material provides superior chemical resistance

SPECIFICATION

• Part Number: 6870090
• Material: Black glass-filled polypropylene
• Inlet/Outlet: 3/4″ Female NPT
• NSF certified