Bronze Valves
Bronze Globe Valve – PN25 – SDNR (Screw-Down Non-Return)
Bronze Globe Valve – PN25 – SDNR (Screw-Down Non-Return)
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The Bronze Globe Valve – PN25 – SDNR is a dual-function valve that combines positive shut-off with non-return capabilities. Designed for systems requiring both flow regulation and backflow prevention, this valve is ideal for steam, water, air, and non-aggressive fluid services operating at pressures up to 25 bar.
Built from high-quality bronze, it features excellent corrosion resistance and durability. The SDNR design allows the valve to close manually while also preventing reverse flow when open — a smart solution for marine, boiler, and industrial applications.
Key Features:
- PN25 pressure rating (25 bar max)
- SDNR (Screw-Down Non-Return) functionality
- Combines isolation and backflow prevention
- Bronze construction for long-term corrosion resistance
- Suitable for steam, water, air, and general-purpose fluids
- Ideal for marine, HVAC, and pressure 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.