GATE VALVE LOCK
PRODUCT FEATURES • Gate valve locks are suitable for valve handles with diameters from 165
Product Overview
The Gate Valve Lock (MLH01-H05) is a purpose-built lockout/tagout (LOTO) device designed to securely immobilise gate valve handwheels with diameters ranging from 165 mm to 254 mm, preventing unauthorised or accidental valve operation during maintenance and servicing activities. Constructed from high-strength engineering-grade ABS thermoplastic, the device delivers outstanding resistance to chemicals and extreme environmental conditions while remaining lightweight for ease of use. Its semi-circular, same-size design accepts a safety padlock with a shackle diameter of ≤ 7 mm, integrating seamlessly into any facility's LOTO programme.
Key Features
- Fits gate valve handwheel diameters from 165 mm to 254 mm
- Wraps securely around the valve operating handle to prevent accidental opening
- Engineered from ABS thermoplastic – strong, lightweight, and fully insulated
- Resistant to chemicals and effective in extreme operating conditions
- Semi-circular (MLH01-H05) design accommodates a safety padlock with lock beam diameter ≤ 7 mm
- Supplied with high-visibility permanent security labels in English
- Standard colour: red; custom colours available on request
- Transparent PC (polycarbonate) version available – high-temperature and impact-resistant
- Compatible with multi-lock hasps for group LOTO procedures
Technical Specifications
Applications
- Locking out gate valves on oil & gas pipelines during maintenance shutdowns
- Process plant isolation of steam, water, and chemical service gate valves
- Petrochemical facility valve lockout during equipment overhaul
- Power generation plant maintenance isolation procedures
- Water treatment and desalination plant valve control
- Manufacturing facility LOTO compliance on cooling and process valves
- Offshore and marine platform valve isolation
- Mining and mineral processing valve lockout
- Pharmaceutical plant utility valve lockout during cleanroom maintenance
- Pulp, paper, and food processing plant safety isolations
Product Benefits
By physically clamping around the valve handwheel, the gate valve lock eliminates the risk of accidental or unauthorised valve operation, helping facilities comply with OSHA, ANSI/ASSE Z244.1, and Saudi Authority for Accredited Residency (SAAR) / SASO LOTO requirements.
The engineering-grade ABS housing resists a broad spectrum of industrial chemicals, moisture, UV exposure, and temperature extremes, ensuring reliable performance in the harshest Saudi Arabian plant environments – from coastal petrochemical complexes to high-temperature desert facilities.
The intuitive semi-circular clamshell design snaps into place around the handwheel in seconds without tools, minimising downtime during lock-on and lock-off operations and allowing maintenance teams to work efficiently.
The bold red colour and permanent high-visibility security labels make locked-out valves immediately identifiable from a distance, reinforcing a proactive safety culture and reducing the likelihood of override attempts.
Available in custom colours to match facility colour-coding schemes, and in a transparent PC variant for visual confirmation of valve position without removal – ideal for audits and supervisory inspections.
Why Choose Dareen
- Dareen International supplies proven LOTO equipment trusted by leading industrial operators across Saudi Arabia and the GCC
- Genuine ABS and PC engineering plastics ensure long service life in demanding petrochemical and heavy-industry environments
- Wide handwheel diameter range (165–254 mm) covers the majority of standard gate valve sizes in a single SKU
- Padlock-ready design (shackle ≤ 7 mm) is compatible with virtually all standard safety padlocks
- Customisation capability (colours, transparent version, label languages) enables site-specific LOTO programmes
- Expert local support from Dareen International's Dammam office for specification, ordering, and compliance guidance
