GATE VALVE LOCK
• Gate valve locks are suitable for valve handles with diameters from 254mm to 330mm and a
Product Overview
The Gate Valve Lock is a robust Lockout/Tagout (LOTO) device engineered to prevent the accidental or unauthorised opening of gate valves fitted with handwheels ranging from 254 mm to 330 mm in diameter. Constructed from high-quality engineering-grade ABS plastic, its semi-circular clamshell design clamps firmly around the valve operating handle, delivering reliable isolation in demanding industrial environments. High-visibility permanent security labels and compatibility with standard safety padlocks make it an indispensable component of any comprehensive energy-isolation programme.
Key Features
- Fits gate valve handwheels with diameters from 254 mm to 330 mm
- Strong, lightweight insulated thermoplastic ABS housing
- Chemical-resistant construction for use in harsh industrial conditions
- Semi-circular (MLH01-H05) same-size design for a secure, consistent fit
- Accepts safety padlocks with a shackle diameter of ≤ 7 mm
- High-visibility permanent security warning labels included (English)
- Standard colour: red; custom colours available on request
- Optional transparent PC variant available – high temperature and impact resistant
- Prevents accidental or unauthorised valve operation
- Lightweight design reduces operator fatigue during installation
Technical Specifications
Applications
- Oil & gas pipeline gate valve isolation
- Petrochemical plant maintenance shutdowns
- Water treatment and utility valve lockout
- Power generation facility energy isolation
- Manufacturing plant LOTO procedures
- Pharmaceutical and food processing facility maintenance
- Marine and offshore installation valve control
- Mining and heavy industry equipment isolation
- HVAC system valve lockout during servicing
- Confined space entry preparation – valve isolation
Product Benefits
By encasing the gate valve handwheel within a secure semi-circular housing, this lockout device physically prevents the valve from being opened during maintenance or servicing, dramatically reducing the risk of accidental energy release, fluid discharge, or workplace injury.
The engineering-grade ABS thermoplastic housing is formulated to withstand exposure to a wide range of industrial chemicals, moisture, UV radiation, and temperature extremes, ensuring the device remains functional and tamper-resistant throughout its service life.
The integrated padlock hasp accepts any standard safety padlock with a shackle diameter of 7 mm or less, allowing facilities to incorporate the valve lock seamlessly into existing multi-lock group LOTO programmes without additional hardware.
The standard red colour and included permanent security warning labels ensure that the locked-out status of the valve is immediately apparent to all personnel in the area, supporting clear hazard communication and regulatory compliance.
Available in custom colours and in a transparent PC variant for applications requiring visual confirmation of the valve position, making it adaptable to diverse site-specific safety colour-coding requirements and extreme-temperature environments.
Why Choose Dareen
- Engineered specifically for gate valve handwheels in the 254–330 mm range – no improvised adaptors needed
- Durable ABS construction provides long service life even in corrosive, wet, or high-temperature environments
- Immediate visual deterrent with bold red colour and permanent warning labels
- Compatible with all standard ≤7 mm shackle safety padlocks for seamless LOTO group procedures
- Lightweight design allows rapid one-person installation, minimising downtime
- Custom colour and transparent PC options available to meet site-specific safety standards
