A General Twin Seal valve, or a similar single body double block and bleed valve, often uses a device to relieve the pressure in the cavity between the 2 seals to the upstream (or downstream) side of

I am investigating a low hot water flow issue for a single building served by a district heating plant. The pumping system is designed as a constant speed primary distribution with varible speed pumps

Utility boiler with feedwater pump HP discharge side water hammer. There are one inlet and two discharge (HP and IP) for this FW pump.

A product catalog details a table of liquid flow rates GPM's and gas flow rates in SCFH's for excess flow check valves. Is a relationship available that relates GPM and SCFH for different liquified pr

I have a question regarding Yarway Automatic Recycle Valves. They all seem to say they are "flow sensing", but then seem to operate mainly on springs, while some have orifices.

I have a system i want to get some advice on. Large milling machine, hyd system = counterbalance circuit : 2 counterbalance cylinders, pilot operated check valve, pressure reducing valve and a nitroge

We have a two pipe direct return cooling pipe system for a campus of buildings. Each building circuit is the secondary and the circuit between buildings is the primary. There are differing views as to

My understanding is that if the pressure is kept below 15 psi above atmospheric pressure we do not have to certify it as a pressure vessel so that's the reason we need the relief valve