Hopkinsons®
Gate Valves Flexi Wedge Design
We recommend the highly versatile Hopkinsons® Flexi Wedge design as gate valve which is designed for containment isolation duties.
The wedge gate valve seals by using mechanical force. Closure is achieved by applying a downward force to the wedge to seal on both tapered seats. The
seat faces are self centering which ensures consistent closure through the lift of the valve.
APPLICATIONS
- General purpose stop valve
- Main steam and feedwater isolation
- Boiler circulating pump isolation
- The basic design is also incorporated in valves for other duties such as: Feedwater heater protection; Feed pump leak-off; Nuclear Applications (ASME Section III, Class 1, 2 & 3); Oil & Gas applications upstream, midstream, and downstream
MATERIALS
- Carbon Steel
- Alloy Steel
- Stainless Steel
SIZE RANGE/DIMENSIONS
- 80 – 600 mm (3 – 24 inches)
KEY FEATURES & BENEFITS
- Position indication
- Bonnet overpressure protection
- Bi-directional operation
- Seal weld (bolted bonnet)
- Pressure sealed
- Flexible wedge design
- Precision body guides
- Inlet and outlet sealing
- Integral bypass arrangements/option
- Instrumented stem
- Designed for containment isolation duties
DESIGN STANDARDS
- ASME B16.34
- ASME Section III
- EN 12516
- RCC-M
- Alternatively, valves can be supplied to other national standards
DESIGN RATINGS
- ASME Class 150 to 2500
TEMPERATURE RANGE
- -29°C – 620°C (-20°F – 1150°F)
