Valves UK
Bronze Lockshield Gate Valve – PN20 Rated
Bronze Lockshield Gate Valve – PN20 Rated
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The Bronze Lockshield Gate Valve – PN20 offers secure, tamper-resistant flow control for water and heating systems operating at pressures up to 20 bar. Featuring a lockshield design, it allows the valve to be preset and locked in position, preventing unauthorised adjustment once installed.
Manufactured from high-quality bronze, this valve provides excellent corrosion resistance and long-term reliability. Its compact, non-rising stem design is ideal for confined spaces and ensures low-pressure drop across the line. Commonly used in HVAC, building services, and industrial applications.
Key Features:
- Lockshield design for tamper-proof flow control
- PN20 pressure rating (20 bar)
- Durable bronze body with excellent corrosion resistance
- Non-rising stem and full bore for smooth flow
- Ideal for HVAC, heating circuits, and building systems
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FAQ's
What is the difference between a valve and an actuator?
What types of actuators are available?
The main types of actuators are:
Pneumatic actuators – use compressed air for fast, reliable operation.
Electric actuators – use electrical power for precise control.
Hydraulic actuators – use fluid pressure for high-torque applications.
Each type offers unique advantages depending on the environment, media, and system control needs.
How do I choose the right actuator for my valve?
To select the correct actuator, consider:
Valve type and torque requirement
Power source available (air, electric, or hydraulic)
Operating environment (temperature, humidity, hazardous area)
Control signal type (on/off or modulating)
Matching actuator torque and compatibility with the valve’s ISO mounting ensures reliable performance.
What are the main types of valves used in automation?
The most common valves in automated systems include:
Ball valves – for tight shutoff and quick operation.
Butterfly valves – for larger flow control with compact design.
Globe valves – for precise throttling and flow regulation.
Check valves – to prevent backflow.
Gate valves – for full bore flow isolation.
What’s the difference between a double-acting and spring-return actuator?
Double-acting actuators use air (or power) to both open and close the valve.
Spring-return actuators use air to open (or close) the valve, and a built-in spring to automatically return it to a safe position when power or air is lost — ideal for fail-safe operation.
How often should valves and actuators be serviced?
Regular maintenance intervals depend on operating conditions, but a good rule of thumb is to inspect every 6–12 months.
This includes checking for leaks, lubrication, seal wear, and actuator responsiveness to prevent unexpected downtime.