The 2010 edition of NFPA 13 has section 7.1.2.1, which states 'Relief valves will be required on all wet pipe systems that do not have auxilary air reservoirs. Previously, they were only required on g

I'm looking for which spec or code states that when work is carried out on equipment on an operational plant that the piece of equipment is isolated by two valves. Any one remember where this is writt

We are facing large seat leakage over metal seated dual plate check valves during commissioning. Valves are new and certificates show acceptable high pressure seat test hydrostatic (1,1*pd) and low pr

I have a question that revolves around the galvanic corrosion mechanism. If I use threaded bronze valves in a carbon steel boiler feedwater circuit, will there be a concern with galvanic corrosion in

I have a level gauge that is measuring water level in a pressurised bladder tank  (air in bladder, bladder hanging from the top of the tank), my problem is that when the water level goes down in

We have concentrated bulk HCl storage on site. We also have a supply and return HCl header that is always pressurized. What is the best way to setup acid injection on the RO feedwater line?

We just designed a sewer force main connecting three lift stations. The first station has an 8" PVC FM that discharges to a gravity manhole and into the second lift station.

I am working on making improvements to an existing water system and have a few questions. Background: 66 homes spread over 6 miles; distribution pipes are 4", 2", and 1.5"; Currently the well's 10 hp