Valves for the Fire Water System
The plant's last line of defence: a network that must work instantly, after years of standing idle, without warning. Valve selection here is dominated by fail-safe philosophy and testability, not process optimisation.
What are the critical valves in a Fire Water System?
Ring-main sectional isolation (Gate Valves) — Supervised (tamper-monitored) OS&Y gate valves so isolation status is always known. Deluge system actuation (Control Valves) — Fast-acting deluge valves for fixed fire-protection systems on vessels and tanks. Hydrant and monitor isolation (Gate Valves) — Manual isolation at each hydrant/monitor point across the ring main.
Critical Valve Points
Ring-main sectional isolation
Gate Valves →Supervised (tamper-monitored) OS&Y gate valves so isolation status is always known.
Deluge system actuation
Control Valves →Fast-acting deluge valves for fixed fire-protection systems on vessels and tanks.
Hydrant and monitor isolation
Gate Valves →Manual isolation at each hydrant/monitor point across the ring main.
Unit-Level Valve Strategy
- Normally-open isolation valves are supervised (tamper-switch monitored) so an inadvertently closed valve is alarmed, not discovered during a fire
- Deluge and monitor valves need fail-open or fail-safe actuation independent of plant power/instrument air where the spec demands it
- Corrosion allowance is generous by design - seawater or long-standing stagnant water rewards conservative material selection over minimum-cost selection
Equipment in this Unit
Fluids in this Unit
Governing Standards
Related process units
Sealing systems specified in this unit
Connected Engineering
Sourcing valves for a Fire Water System?
Send your unit valve list — we supply the full set (Gate Valves, Control Valves) with certification matched to NFPA 24, in one PO.