Cartridge Pilot Operated Check Valve – HSP1652

Features

Working pressure up to 350 bar
Cracking pressure: 0.35 bar
3:1 pilot piston to check valve ratio
Allows free flow from C to B, blocks B to C until pilot pressure is applied to A
Re-seats automatically when pilot pressure is removed
Designed for direct installation into cylinder end caps or manifold blocks
Minimises pipework and potential leak paths
Zinc plated body with hardened steel components
Custom C200 3-port cavity
Standard seals: Nitrile (Viton and EPDM optional)

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Overview

The cartridge pilot operated check valve is designed to hydraulically lock a flow path,
preventing return flow until pilot pressure is applied. It allows free flow from C to B
while blocking B to C, only opening when pilot pressure is introduced at port A.
Once pilot pressure is removed, the valve automatically re-seats. The compact design
enables direct installation into cylinder end caps or manifold blocks, reducing pipework
and potential leak paths. This valve is suitable for load holding and controlled release
in hydraulic circuits.

Technical Specification

Part Code	Cracking Pressure	Pilot Ratio	Cavity
HSP1652	0.35 bar	3:1	C200 (3-port)

Cartridge Pilot Operated Check Valve – HSP1652 - Technical Drawing

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