Type 14450
Precision relief valve




The Type 14450 precision relief valve has been designed to provide accurate pressure control in systems operating at pressures up to 700 bar and flows of up to 45 litres/min. The floating poppet design enhanced by the use of linear bearings produces characteristics which are non flow dependent and ensures long life with repeatable performance.
Floating poppet design produces reseating at 95% of cracking pressure or better; allowing use of hardened seats for durability.
The main spring load is not transmitted to the seat, thus reducing distortion and wear.
Design characteristics are not flow dependent; producing a near linear response to increasing flow.
Long life and repeatable performance are ensured through the use of hardened elements operating in a linear bearing cage.
Installation and removal of system pipework is simplified by the right angled configuration.

This relief valve conforms to Directive 94/9/EC relating to equipment intended for use in potentially explosive atmospheres and is ATEX (ATmosphere EXplosible) certified.

These valves also conform to the Pressure Equipment Directive 97/23/EC. All valves are CE marked and supplied with a test certificate plus a declaration of conformity.
Marshalsea Hydraulics has been assessed by SGS Société Générale de Surveillance SA and certified as meeting the requirements of ISO 9001:2000 for the design, development, manufacture and servicing of hydraulic pumps, relief valves and intensifiers.

Part number Pressure range (bar)  
Connections
14450 – 01 103 – 240 1/2" NPT
14450 – 02 207 – 413 1/2" NPT
14450 – 03 275 – 700 1/2" NPT
14450 – 04 103 – 240 1/2" BSP
14450 – 05 207 – 413 1/2" BSP
14450 – 06 275 – 700 1/2" BSP
Reseat pressure – 95% of cracking pressure or better.
Proof test pressure: 1,000 bar
Materials
External/wetted parts 316 stainless steel
Hardened parts 431 stainless steel
Other parts stainless steel