Check and Relief Valves

Check valves, also known as clack valves or one-way valves, are an inexpensive yet effective solution to controlling backflow in high and low pressure fluid systems. Available in a wide range of sizes and cracking pressures, our mechanical check valves can handle up to 6,000 psi and temperatures up to 600°F.

We maintain a large inventory of instrument check valves, including welded check valves, compact check valves, ball check valves, high pressure check valves, and adjustable check valves. End connection options include male / female NPT, Hy-Lok tube fittings, and metal gasket & O-ring face seals. Hy-Lok offers stainless steel check valves brass check valves, and alloy 400 check valves.


If you have any questions about any of our products or services, don’t hesitate to give us a call. For any inquiries, fill out the form and one of our Hy-Lok representative will contact you soon.

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