I am wondering if it is accepted practice to cut a RTJ into a RF flange. I have 2 only 6 inch 1500 ANSI RF pipeline valves for NACE 0175 applicable service.

I have a double acting valve that would increase effective port area by about 50% in a stationary biogas engine.

We have a bit of a pet project. We are looking for a high cycle valve. Right now we can only really hink of a cam driven full rotation valve.

I am currently engineering a flush on a heat exchanger, shell-and-tube type. I will be connecting the tube side (350 psi) to the shell side (50 psi).

We have have a number of stainless steel lines to install but have found carbon contaimnation adjacent to the weld area, it seems like carbon brushers have been used.

Where to find any info about power valve operation specifically on the Suzuki RG 250 of the late eighties?

Any restriction to use on-off valve instead conventional deluge valve? (Hydraulic signal actuated diapharm valve.

If a valve is supposed to be say Class 800, what does it mean? I am sure it is related to pressure and temperature but do not know the exact meaning.