Singer Valve is proud to hold a wide range of regulatory approvals to meet the requirements of your application. Not all regulatory requirements are available in all sizes and model combinations. Singer Valve will provide approval details upon request.

Regulatory requirements must be specified at time of order for correct processing and labelling. Processing fees may apply.


Singer Valve castings are based on ANSI Class 150 or 300 standards and drilled as per ANSI B16.42 or threaded NPT. Class 150 are machined flat faced while class 300 are machined raised face. ANSI standard dimensions are presented in this catalogue in US Units (inches) and Metric Units (millimetres). Also available are ANSI flanges drilled to ISO 2531 / BS4504 PN10, PN16, PN25, PN40, or threaded BSPT. ISO standard dimensions are presented in the product catalogue in US Units (inches) and Metric Units (millimetres). Australian Stand´╗┐ard AS4087 machined to Class 16 or Class 35. 

WRAS Approval Certificates

Wras Approval Certificate RPS
Wras Approval Certificate F Type 4
Wras Approval Certificate 106-PR
Wras Approval Certificate 206-PR

WRAS Approval Letters

Wras Approval Letter RPS
Wras Approval Letter F Type 4
Wras Approval Letter 106-PR
Wras Approval Letter 206-PR

UL Approval Certificates

UL Approval Certificate of Compliance for NSF/ANSI 61 and 372