what design codes & standards do valve manufacturers adhere to?

Most industrial valve companies (including SlurryFlo Valve Corp.) manufacture their products to the specifications outlined in the following codes and standards for design, fabrication, testing and quality control.

ASME B16.34: 

Valve Design & Testing

ASME B16.5 & B16.47: 

Flange Ratings & Construction

ASME SECTION VIII DIV 1:

Non-Destructive Examination

ANSI FCI 70-2: 

Control Valve Seat Leakage Classifications

MSS-SP 81 AND 135: 

Valve Pressure Ratings & Face-to-face Dimensions

ASME SECTION IX: 

Pressure Containing Weld Procedure Qualifications
SlurryFlo control valve.
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