Turbine Emergency Fire Pump Auto Valve Part No 363

TURBINE EMERGENCY FIRE PUMP AUTO VALVE PART NO 363 (MPN: R180406026)

The Turbine Emergency Fire Pump Auto Valve (Part No. 363 / MPN: R180406026) is a control assembly designed for shipboard and offshore emergency firefighting systems. In SOLAS-mandated emergency fire installations—whether driven by dedicated diesel power units or independent hydraulic/steam auxiliary turbines—this valve operates as the automatic priming, venting, and pressure-governing regulator.

Built specifically to survive continuous contact with raw seawater, high cavitation environments, and rapid thermal cycling, the R180406026 Auto Valve eliminates manual suction priming bottlenecks during blackouts and dead-ship recovery operations. Its corrosion-resistant internals handle abrupt hydraulic surges, maintaining system line integrity before high-pressure saltwater reaches deck hydrants and accommodation deluge loops.

Model Details

• Equipment Type: Marine Emergency Fire Pump Automatic Control Valve / Priming Bypass Valve
• OEM Assembly Part Number: Part No. 363
• Manufacturer Part Number (MPN): R180406026
• Component Classification: Class 1 Piping Systems / Safety Fire Appliance (SOLAS Chapter II-2)

Technical Details

Features

• Automatic Hydraulic Priming & De-aeration: Discharges trapped air through an internal high-flow orifice during startup, automatically seating once seawater pressure builds past the preset threshold.
• Marine-Grade Cavitation-Resistant Alloy: High-integrity nickel-aluminum bronze casting stops pitting, impingement, and bio-fouling in stagnant emergency sea-chest lines.
• Fail-Safe Mechanical Counterweight / Spring Return: Eliminates total dependence on remote electrical signals; valve mechanical bias operates smoothly during complete blackouts.
• Positive Micro-Switch Position Feedback: Integrated marine-rated limit switches transmit open/closed status back to the Fire Control Station and Engine Control Console.
• Drop-In Retrofit Footprint: Exact center-to-face and pilot flange tolerances prevent custom pipe re-welding on emergency pump skids.

Valve Compatibility

• Turbine-Driven Pump Units: Coffin, Terry, Coppus, Shinko, and DESMI auxiliary turbine fire pump skids
• Diesel Emergency Fire Packages: Cummins, Yanmar, Caterpillar, and Volvo Penta marine auxiliary emergency setups
• Centrifugal Water Ends: Desmi S-Series (S80/S100), Hamworthy, Taiko Kikai, Hyundai Heavy Industries marine centrifugal units
• Vessel Classes: Bulk Carriers, Crude Oil Tankers (VLCC/Suezmax), Container Vessels, LNG/LPG Carriers, Offshore Drillships & Floating Production Units (FPSO)

Part Number Cross-References

• OEM Alternate Code: 363-R1804-06
• Casting Markings: R180406026-VAL-363
• Industry Interchange: VLV-EFP-363 / EFP-A-363-DN50
• NATO / Stock Group: 4820-XX-EFP-0363

Applications

• Emergency fire pump sea-chest suction line de-aeration and automated priming systems.
• Automatic overboard bypass and discharge loop pressure stabilization.
• Auxiliary turbine exhaust drain back-pressure protection and cooling line distribution.
• Remote-starting deluges on offshore helidecks and forward thruster room fire isolation skids.

Frequently Asked Questions

What is the exact function of the Part No. 363 Auto Valve on a turbine emergency fire pump?

This valve manages the priming and pressure-balancing cycle of the emergency fire pump system. When the pump kicks on, the valve releases air from the casing and suction leg. Once seawater pressure hits operational levels, the valve seals shut automatically to route total pump discharge into the main fire water line.

Can this auto valve replace Part No. 363 assemblies on diesel-driven emergency pumps?

Yes. Although designed around turbine emergency pump installations, the hydraulic internals and PN16 flange dimensions follow universal marine configurations. As long as pump discharge pressure, pilot pipe connections, and flange ratings match, it operates reliably across diesel-engine-driven units.

How do I verify if the valve seat is leaking raw seawater past the internal bypass?

Check the bypass dump pipe while the fire pump runs at steady operating pressure. If water continuously drains from the air release vent after line pressure passes 4.5 bar, debris is stuck on the main seat, or the internal Viton/Monel trim assembly is worn and requires lapping.

Does this valve ship with marine class survey certificates?

New and reconditioned units can be provided with full Class 3.1 material and hydrostatic pressure inspection test sheets stamped according to IACS standards (such as DNV, ABS, or LR).

Are overhaul seal repair kits sold separately for MPN R180406026?

Yes. Complete soft-goods replacement kits (including internal diaphragm/O-rings, stem guide packings, and pre-calibrated return springs) are cross-referenced to Part No. 363 and can be dispatched together with the complete assembly.