Swagelok SS-CHS8-1 Poppet Check Valve, 1/2 in., 1 psi Cracking

Move more flow one direction and shut the door on the other with the SS-CHS8-1 poppet check valve. This 1/2 in. CH Series valve pairs a spring-loaded poppet with a low 1 psi cracking pressure, so it opens with the slightest forward push and still slams shut against backflow. That light hold-off makes it a smart pick for low-pressure and gravity-fed lines where you cannot spare much pressure drop. You get 1/2 in. Swagelok tube fitting ends for higher-volume runs, a generous 1.8 Cv, and a 316 stainless steel body that laughs off corrosion. The fluorocarbon FKM seal with PTFE backup ring locks in a tight shutoff, and the valve holds a full 6000 psig at room temperature. Count on it to protect pumps, meters, and analyzers across your refinery, chemical, and utility systems. Want a higher cracking pressure or a different end connection? Call Collins-Oliver for a quote.

Key Features

• Spring-loaded poppet snaps shut against backflow to protect upstream equipment
• Low 1 psi cracking pressure opens with minimal forward pressure, ideal for low-pressure lines
• 1/2 in. Swagelok tube fitting ends handle higher-volume flow runs
• Generous 1.8 Cv keeps pressure drop low across the valve
• 316 stainless steel body resists corrosion in demanding service
• Fluorocarbon FKM seal with PTFE backup ring, rated 6000 psig at 100 degrees F

Technical Specifications

• Series: Poppet Check Valves, C, CP, CH Series (fixed pressure)
• Seat Design: Spring-loaded poppet
• End Connections: 1/2 in. Swagelok tube fitting (both ports)
• Cv: 1.8 maximum
• Max Working Pressure: 6000 psig at 100 degrees F (413 bar at 37 degrees C)
• Cracking Pressure: 1 psi (0.07 bar, 0.007 MPa)
• Seal Material: Fluorocarbon FKM with PTFE backup ring
• Body Material: 316 stainless steel
• Cleaning: Standard Cleaning and Packaging (SC-10)