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The Broady Type 4000 pilot operated safety relief valve is a high performance product, designed for superior performance in today's ever expanding industries. The valve can be supplied in sizes 1" x 2" to 8" x 10", orifices 'D' through to 'T'.


The Type 4000 is an ASME approved product for both gas and liquid and is available in a range of materials from Carbon Steel and Stainless Steel to more specialised materials, such as Monel and Hastelloy, to suit customers requirements.

The soft seat design of the Type 4000 allows for maximum seat tightness with minimum leakage. The valve is available with a range of difference accessories and can be adapted to suit all different manners of services.

Below is a brief summary of our Type 4000 Pilot Operated Relief Valve. 


1" x 2" up to 8" x 10"

Design Standards

ASME Section VIII Division 1 (Latest Ed.)

API 520 (Latest Ed.)

API 526 (Latest Ed.)


In accordance with ASME B16.5, DIN EN 1092-1 or JIS 2220

(Other standards/options available upon request)


Carbon Steel, Stainless Steel, Duplex, Super Duplex, Aluminium Bronze and more

Orifice Designations

API orifice designations from 'D' to 'T'

Set Pressure

2 Barg to 425 Barg


Gas, liquid and vapour applications

Further information for this valve can be found in the Type 4000 Piloted Operated Safety Relief Valve technical datasheet.

Technical datasheets for all of our other valves can be found on the Technical section of our website.

If further assistance is required please contact our sales team on +44 (0)1482 619601 or email

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