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

PRODUCT DOCUMENTATION

• SMC 687 Series Check Valve Spec Sheet 

The SMC 687 Series Poppet Check Valve incorporates a thin elastomer disc supported by a poppet that seals on the seat Pressure in the flow direction moves the seal off the seat at about 1/3 psi before pressure builds enough to move the poppet away from the seat Maximum operating pressure of 125 psi covers a wide range of air and fluid applications.

FEATURE AND BENEFITS

• The 694 Poppet Check Valve incorporates a thin elastomer disc supported by a poppet that seals on the seat
• Maximum operating pressure of 125 psi covers a wide range of air and fluid applications
• Compact design with a light cracking pressure, high flow rate, and a positive seal at very low back pressure or slight vacuum
• An embedded O-Ring Poppet is supplied for cracking pressure applications 1/2 psi and higher
• Hastelloy® is a superior chemically resistant spring material

SPECIFICATION

• Part Number: 6870090
• Material: Black Glass Filled Polypropylene
• Inlet/Outlet: 3/4" Female NPT
• NSF Certify