This website contains details of a wide range of valves ideally suited for various applications involving high pressure liquids and gases.
It is advisable to install all valves with the indicating arrow in the direction of normal flow as this relieves the sealing gland from pressure when the valve remains in the closed condition.
Flow and pressure drop graphs for many of the types of valves listed are available on request.
The type of gland packing or seal normally fitted to standard valves is intended to suit the medium or media referred to on the descriptive page and the maximum temperature rating is given for the standard packing used. In most cases, however, we can offer alternative packing to suit particular requirements of media and temperature. Full details of such applications are welcomed to enable us to offer suitable valves and gland packings.
In all matters relating to valve selection we are pleased to offer the services of our technical staff or sales engineers to give advice and recommendations.
All standard mild steel valves have electro-plated finish. All valves shown on this website are hydraulically proof tested to one and a half times the maximum recommended working pressure. (see note on hydraulic proof testing).
Air tests are carried out to suit customers’ requirements up to the maximum recommended working pressure applicable to the valve selected.
Valves may be manufactured to incorporate special features as required by the customer or re-designed to suit special requirements. Full details of media, pressure, temperature and other relevant features must be stated on the enquiry.
Standard valves marked * are normally manufactured from mild-steel but they can be manufactured in high duty bronze or stainless steel; enquiries are invited for valves in these materials.
The valves illustrated on this website are not recommended for steam applications.
Dimensions and details given on this website may be subject to alteration without prior notification.
Standard Hydraulic Proof Test A hydraulic proof test of one and a half times the maximum recommended working pressure is applied to each valve via the inlet port with the valve in the fully open position and the outlet port sealed. This is a strength test both for body and gland seal. Each valve is then tested to the appropriate listed maximum recommended working pressure via the inlet port with the valve fully closed and the outlet port open. This proves effective seating at the maximum working pressure. Unless otherwise specified, all mild steel valves are tested with hydraulic oil and stainless steel and bronze valves with water.