Block and Bleed Valve IV 2
- Description
- Features
The 2-valve manifolds typically use a “block-and-bleed” design. This setup includes a shut-off valve that isolates the measuring instruments (like pressure gauges and transmitters) from the process they’re monitoring. By closing this valve, the instrument can be safely removed for maintenance, such as calibration or replacement. Additionally, a vent valve allows for the safe release of any pressure from the instrument before removal or for performing zero checks.
The design features a non-rotating spindle tip which minimizes wear on the seals, leading to longer service life, especially with frequent valve operation. Furthermore, the blow-out proof design enhances safety for applications under high pressure.
WIKA also offers services to professionally assemble valves, pressure measuring instruments, and other accessories into complete, ready-to-install systems. They conduct a leak test on these assemblies to ensure they function properly.
Applications of the block-and-bleed valve
- Shut off and vent pressure measuring instruments
- For gaseous and liquid aggressive media that are not highly viscous or crystallising, also in aggressive environments
- Process industry: oil and gas, chemical and petrochemical industries, power generation, water and wastewater
Special features of the block-and-bleed valve
- Low-wear design due to non-rotating spindle tip in the bonnet
- Low torque and smooth operation of valve handle even at high pressure
- Enhanced safety due to blow-out proof bonnet design
- Valve seat tested for leak tightness per ISO 5208 leak rate A
- Customer-specific combination of valves and instruments (instrument hook-up) on request