JIS Marine Fire Hydrant Valve
The JIS Marine Fire Hydrant Valve is a critical valve for marine fire-fighting systems, designed and manufactured in strict accordance with Japanese Industrial Standards (JIS). Installed on shipboard fire-fighting piping networks to control the water supply, it works in conjunction with fire hoses, nozzles, and other equipment to form a complete fire-extinguishing system. These valves are widely used on ocean-going cargo ships, fishing vessels, engineering vessels, oil tankers, and offshore oil platforms.
Overview
This product range covers two major standard systems: JIS F7333 (cast iron/bronze) and JIS F7334 (bronze), and is available in two configurations—straight-through (Type A) and angle (Type B)—to meet the installation requirements of different pipework layouts.
Core Standard Systems
JIS F7334 Series (Bronze Valves)
Material: The valve body is made of bronze, whilst the disc is made of bronze or brass, offering excellent resistance to seawater corrosion.
Available sizes: DN15 – DN65; sizes DN15–25 are also known in the industry as ‘hose valves’.
Configurations: Type A straight-type, Type B angle-type
JIS F7333 Series (Cast Iron Valves)
Material: Valve body and bonnet made of cast iron HT200; disc and seat made of aluminium bronze QAL9-21, offering a balance of strength and corrosion resistance
Available sizes: Larger sizes such as DN50 and DN65
Configuration: Type A straight-type, Type B angle-type, suitable for Japanese-standard marine fire-fighting pipework
Key Technical Parameters
Pressure Rating: 5K / 10K
Nominal Diameter: DN15 – DN65 (F7334); DN50 – DN65 (F7333)
Connection Type: JIS standard flanges (JIS B2220)
Suitable Media: Seawater, fresh water, steam, oils, air
Operating Temperature: -10°C to 80°C (standard); certain models can operate within a higher temperature range
Key Product Advantages
Corrosion-resistant and durable: Bronze/cast iron valve bodies combined with aluminium bronze internal components ensure resistance to corrosion during long-term use in marine environments characterised by high salt spray and high humidity.
Reliable sealing: Features a soft-seal design, ensuring tight shut-off without leakage; manual operation is effortless, and routine maintenance is straightforward.
Comprehensive Certification: Certificates from leading classification societies such as ABS, BV, CCS, LR and RINA are available, meeting the survey requirements for new shipbuilding and vessel maintenance.
Complete Range of Sizes: Covers common sizes from DN15 to DN65, with dual pressure ratings of 5K and 10K; standard sizes are available for rapid delivery.
Applications
Fire protection piping systems on ocean-going cargo ships, oil tankers and fishing vessels
Fire water supply piping on workboats and offshore oil platforms
Fire hydrant connections on ship decks and in compartments
Fitting for new-build vessels at shipyards and replacement during vessel repairs
