Check Valve

What Are Check Valves?

Check valves are self-acting non-return valves used to prevent reverse flow in industrial pipeline systems. Unlike globe valves or gate valves, which require manual or actuated operation, check valves open and close automatically — the forward pressure of the flowing medium lifts the closure element off its seat, and when flow stops or reverses, the element reseats to prevent backflow. This simple, passive operating principle makes check valves a critical safety and equipment-protection component in virtually every industrial piping system.

Available through the Honiks sourcing network, check valves are supplied in two primary configurations: lift check valves and swing check valves. Each design offers distinct advantages depending on the application, pipeline orientation and flow characteristics required.

Check valves sourced by Honiks cover sizes from DN15 to DN600 in EN/DIN standards with pressure ratings of PN16 to PN40. Connection options include flanged (EN1092-1) and butt-welded ends. Material selections cover carbon steel, alloy steel and stainless steel grades for compatibility with water, steam, air, gas and petrochemical service.

Lift Check Valves vs Swing Check Valves

Lift check valves use a disc that lifts vertically off the seat under forward flow pressure and drops back into position when flow stops or reverses. The disc is guided within the body to maintain alignment. Lift check valves are selected for horizontal pipeline installation and are well suited for smaller bore applications where reliable, positive seating is required. Available from DN15 to DN400 in the Honiks catalogue.

Swing check valves use a hinged disc that swings open with forward flow and swings closed by gravity and reverse flow pressure. The full-bore flow path when open results in lower pressure drop compared to lift check designs. Swing check valves can be installed in horizontal or vertical upward-flow pipelines and are preferred for larger bore applications where minimising flow resistance is important. Available from DN50 to DN600 in the Honiks catalogue.

Standards and Materials

Check valves supplied through Honiks are manufactured to EN12627 with face-to-face dimensions per EN558-1 and flange connections per EN1092-1. Pressure testing is performed in accordance with EN12266-1.

Material options include carbon steel (A216 WCB), alloy steel (A217 WC6) and stainless steel (A351 CF8M). Disc and seat materials are selected based on the service medium — 13Cr, Stellite overlay and stainless steel are typical options. Gasket and sealing materials include SS304, SS316, graphite and PTFE depending on the required temperature and chemical compatibility.

Why Source Check Valves Through Honiks?

Honiks Valve operates as a China-based factory-backed industrial valve supplier, a factory-backed valve supplier. For international buyers, working with Honiks means accessing multiple qualified factories through a single point of contact. We coordinate supplier selection based on your specifications — size, pressure rating, material, connection type and applicable standard — and support the procurement process with documentation, quality inspection coordination and export logistics.

Related Products

Lift Check Valve HN65
Swing Check Valve HN67

Contact our team at info@honiks.com to discuss your check valve requirements, including size, pressure class, material preferences and installation orientation.
For a broader comparison of API gate, globe, check and ball valves, read our API valve types guide.
For pump discharge and reverse-flow prevention in treatment plants, review these water treatment valve selection notes.