The technical specifications in my water project call for butterfly valves operating with manual hand wheel actuators, BUT valves shall have provision for electrical actuators . my concern is about th

1. Table 3-B gives valve body minimum wall thicknesses based on inside diameter. I believe these values are based on a 30k min yield material.

According to B16.34 there are 3 tables that define an acceptable casting, the tables are divided up by wall thicknesses .

For Cryogenic valves clinet has a requirement for the "Collar rings" at the extended bonnets.

I inquire needle valve manufacturers for Class 4500 pressure ratings.(For example Fujikin needle valve)Please verify that you require needle valves rated 4500 psig or other such rating as well as the

A Custumer ask me a Self Venting Plug on a valve equipped with low emission packing.This Plug help to measure the lakage rate of the valve packing.

I have heard of three alternate methods (vs the traditional one consisting of allowing 50 to 25% of the system frictional pressure drop excluding itself to the control valve) to determine the allowabl

this is in reference with ASME - B 16.10 ... 2002Q1) in this std mating flanges are defined to be as per B 16.5 and B 16.47 series A... but wht bout flanged valves with series B?