A compliant, reliable fire valve that doesn’t flinch
The Original Landon Kingsway Free Fall Fire Valves are a critical component in any fuel-related fire protection system. Designed specifically for generators, diesel tanks, and plant rooms, these valves are built to cut off or dump the fuel supply in the event of excessive heat or fire.
Compliance
BS 799-5:2010
BS 5410-1:2019
OFTEC Standards (OFS E101/E105)
NFPA 31 (US)
EN ISO 10497
Automatic fire detection you can trust
These thermal-triggered fire valves are engineered to detect:
Heat build-up from engine overrun
Fire within generator enclosures
Ventilation or louvre actuator failures, where heat builds due to poor airflow
When the ambient temperature reaches 71°C (standard), the fusible link melts, triggering the valve to close or dump fuel immediately. This automatic action helps to prevent escalation of fire risk, keeping personnel and equipment safe.
How it works
Each Free Fall Fire Valve is powered by a drop-arm or dead-weight system, where the weight begins to fall before it moves the valve lever. This pre-drop design ensures momentum is built up, allowing reliable valve activation even under marginal trigger conditions.
Valve cable kits are supplied as standard and include:
Weight
Lever
Pulley
Fusible Link
Cable
Connectors
These valves are suitable for use with multiple fuel types:
Diesel
Heating oil
Lubricating oil
Mineral oil
Gas oil
Rapeseed oil
You can also enhance your installation with the below optional accessories & add-ons:
Material: Cast Iron (painted red) Max. Pressure: 14 Bar (200psi) Cable Length: Standard 9m Fusible Link Rating: 71°C (standard) Maintenance: Test & lubricate 3x per year
Valve Rotation: 90° (¼ turn) Lubricant: Type 90 (4″ and above); Type 44 (under 4″) Flange Specification: BS4504, PN16 Screwed Specification: BSPT Weights Available: 2.25kg, 4.5kg, 6.8kg (5lb, 10lb, 15lb)
Why choose Landon Kingsway?
With over six decades of experience in fire protection system manufacturing, Landon Kingsway delivers British-made, industry-trusted free fall fire valves featuring a robust design, easy maintenance, and a comprehensive accessory range. We offer full support, technical documentation, and fast lead times to support your project from start to finish.
Frequently Asked Questions (FAQs)
Can Free Fall Fire Valves be used with diesel tanks?
A fusible link rated at 71°C melts when exposed to excessive heat, releasing the weight and triggering the valve to isolate or dump the fuel supply.
What triggers a Free Fall Fire Valve?
Yes. They are compatible with diesel, heating oil, lubricating oil, gas oil, mineral oil, and rapeseed oil.
Are Free Fall Fire Valves compliant with UK standards?
Absolutely. Landon Kingsway fire valves comply with BS 799-5:2010, BS 5410-1:2019, OFTEC standards, and other relevant regulations.
What’s included in a free fall fire valve cable kit?
Each kit comes with the weight, lever, pulleys, fusible link, cable, and all necessary connectors – ready for a no-nonsense installation.
Can a free fall fire valve be mounted vertically?
Yes. The design supports both horizontal and vertical pipe runs, making it flexible for different system layouts.
