• The 685/687 series polypropylene check valve operates in any position, horizontal or vertical.
  • Standard cracking pressure less than 1psi with a maximum operating pressure of 125psi and a maximum operating temperature of 140 °F.
  • Buna-N seals standard, ethylene propylene or fluroelastomer seals available.
  • Easily disassembled for repair or replacement of seals.
  • Stainless steel spring, with guided propylene poppet.Hastelloy springs available. Black polypropylene is standard. Please specify white polypropylene if needed.

Unit of Measure
Items
Product Image- SMC Polypropylene Check Valves

685 Series Check Valve
Price $20.19

Product Image- SMC Polypropylene Check Valves

685 Series Check Valve
Price $20.19

Product Image- SMC Polypropylene Check Valves

685 Series Check Valve
Price $10.64

Product Image- SMC Polypropylene Check Valves

685 Series Check Valve
Price $10.64

Product Image- SMC Polypropylene Check Valves

685 Series Check Valve
Price $10.64
Max. Pressure at 75 °F N/A 125 psi
Max. Temperature N/A 140F °F
Dimension A N/A 1.125 inches N/A 1.125 inches N/A 0.938 inches N/A 0.938 inches N/A 0.938 inches
Dimension B N/A 2.50 inches N/A 2.50 inches N/A 2.02 inches N/A 2.02 inches N/A 2.02 inches
Dimension C N/A 1.75 inches N/A 1.75 inches N/A 1.44 inches N/A 1.44 inches N/A 1.44 inches
Max. Pressure N/A 125 psi
End Connection Size 1 N/A 1/2 Male NPT N/A 1/2 Male NPT N/A 1/2 Female NPT N/A 1/2 Female NPT N/A 1/2 Female NPT
End Connection Size 2 N/A 1/2 Female NPT N/A 1/2 Male NPT N/A 1/2 Female NPT N/A 1/2 Female NPT N/A 1/2 Female NPT
Seals N/A EPDM N/A AFLAS® N/A AFLAS® N/A AFLAS® N/A AFLAS®
Spring N/A 7 psi - 302 Stainless (O-Ring Poppet) N/A 1/3 psi - 302 Stainless (Disc Poppet) N/A 1/3 psi - 302 Stainless (Disc Poppet) N/A 1/3 psi - Hastelloy (Disc Poppet) N/A No Spring
NOTICE: Plus shipping & handling charges to apply N/A "International orders and orders slated for export require special handling and additional documentation. We will contact you with the necessary details to facilitate a timely delivery and proper payment method."