Fire water piping
Fire water piping
(OP)
What is the material used in Fire water piping?
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RE: Fire water piping
Offshore commonly cupro-nickel, could be duplex or super-duplex stainless, may be FRP.
RE: Fire water piping
RE: Fire water piping
RE: Fire water piping
RE: Fire water piping
Fire fighting lines, or dual purpose water supply/fire fighting lines, can at times and for various reasons represent quite rigorous service (e.g. due to effects of very high flow velocities, pumps and valve openings/closures, and sometimes in "emergency" circumstances etc.) I think it is for such reasons insurance-related entities such as Factory Mutual require quite high pressure (e.g. 4X the rated pressure) proof-of-design testing of pipes, fittings, and thrust restraints etc. involved as a condition of listing. Cement mortar lined ductile iron piping systems are widely used and offer substantial robustness in this regard for underground fire protection systems, with some manufacturers even offering piping and joint restraint products that carry a 350 psi (nearly 25 bars) Factory Mutual/Underwriter's Laboratories pressure rating.