Steel Inline Hydraulic Check Valve, Female 1/4-18 NPT Ports, PSI Cracking Pressure, Up to 6.00 GPM & 5000.00 PSI

It has female 1/4-18 NPT ports. Flow is allowed in the direction of the arrow on the valve body, and it checks flow in the opposite direction.

This steel check valve is rated up to 5000 PSI and 6 GPM, so it's suitable for hydraulic systems, but keep in mind that the pressure ratings listed are for non-shock service.

Steel body valves in this line are built for hydraulic systems. The brass versions are the ones suited for pneumatics and lower-pressure hydraulic work. Since this is the steel model, you're good for hydraulic use up to 5000 PSI and 6 GPM flow.

For continuous use, the steel construction and internal stainless steel components of this Deltrol check valve are designed for durability. Just keep in mind the maximum operating temperature of 200°F to ensure optimal performance over the long haul.

Cracking pressure on this valve sits between 1 and 2.5 PSI. That's a pretty low threshold, which is part of what makes it well-suited for hydraulic systems where you want flow to move freely in the correct direction without fighting a stiff spring. Once pressure drops or reverses, the stainless steel ball seats and stops backflow. The low differential is intentional for applications that need responsive, efficient flow control rather than a heavy-duty check that takes more pressure to open.