Parker 4A-C4L-1-SS C Series Check Valve, 1/4″ A-LOK, 316 SS, 1 psi Crack

Protect your instruments and pumps from costly backflow with this Parker C Series check valve. The 4A-C4L-1-SS lets your media move one way and slams the door on reverse flow, so you guard sample lines, analyzers, and process loops without a second thought. A low 1 psig cracking pressure means the valve opens easily and stays out of your way during normal forward flow. Two 1/4 inch A-LOK double-ferrule ends seal to your tubing tight and hold firm under pressure. The 316 stainless body handles aggressive chemical, petroleum, and power generation service, while the fluorocarbon rubber seal delivers a positive, bubble-tight seat on the return stroke. A spring-loaded poppet responds fast and reseats clean, cycle after cycle, so your protection never lags. Compact and inline, it drops into tight instrument racks where space runs short. Trust it to keep your process flowing the right direction and your sensitive gear safe. When your system needs dependable one-way control, this is the valve to spec. Call Collins-Oliver for your quote.

Key Features

• 1/4 in. A-LOK double-ferrule ends for leak-tight tubing connections
• Low 1 psig cracking pressure opens easily during forward flow
• 316 stainless steel body for chemical, petroleum, and power service
• Fluorocarbon rubber seal delivers positive bubble-tight backflow shutoff
• Spring-loaded poppet responds fast and reseats clean every cycle
• Compact inline body fits tight instrument racks and panels

Technical Specifications

• Part Number: 4A-C4L-1-SS
• Series: C Series
• Valve Type: Poppet check valve
• End Connections: 1/4 in. A-LOK x 1/4 in. A-LOK (double ferrule compression)
• Body Material: 316 stainless steel
• Seal Material: Fluorocarbon rubber
• Cracking Pressure: 1 psig
• Flow Direction: One-way (inlet to outlet)