Description
Crane F621 Semi-Lugged Lever Operated Butterfly Valve
WRAS Approved PN16 Ductile Iron Butterfly Valve for Water and HVAC Systems
The Crane F621 is a semi-lugged, lever-operated butterfly valve designed for reliable isolation in commercial, industrial, and public health water systems. Manufactured from ductile iron with an aluminium bronze disc and WRAS-approved EPDM liner, the F621 delivers excellent corrosion resistance, low operating torque, and long service life. Suitable for PN16 and ANSI Class 125 flange connections, the valve is widely used in HVAC, chilled water, heating, and potable water applications.
Key Features
- Semi-lugged butterfly valve
- Lever-operated quarter-turn design
- Size range: DN50–DN200
- Pressure rating: PN16 / ANSI Class 125
- Ductile iron body with fully bonded epoxy coating
- Aluminium bronze disc for excellent corrosion resistance
- WRAS-approved EPDM liner
- Blow-out proof stainless steel stem
- Compact integrated notch plate
- Lightweight aluminium lever
- Maintenance-free design
- Suitable for BS EN 1092-2 PN10/PN16 and ANSI B16.1 Class 125 flanges
- Valve manufactured in accordance with BS EN 593.
Benefits
WRAS Approved for Potable Water
The F621 is approved by the Water Regulations Advisory Scheme (WRAS) for potable water applications up to 80°C, making it suitable for domestic water systems, public buildings, and healthcare facilities.
Robust Ductile Iron Construction
The valve body is manufactured from high-strength ductile iron and protected with a fully bonded epoxy coating, providing excellent resistance to corrosion in demanding HVAC and water distribution environments.
Excellent Corrosion Resistance
An aluminium bronze disc combined with an EPDM liner offers outstanding resistance to corrosion while maintaining reliable sealing performance over many years of operation.
Safe and Reliable Operation
The anti-blow-out stem design improves operational safety, while the aluminium lever and integrated notch plate provide smooth quarter-turn operation with precise positioning.
Maintenance-Free Performance
With no routine lubrication requirements and a durable resilient seat, the F621 minimizes maintenance costs and system downtime throughout its service life.
Typical Applications
The Crane F621 is suitable for:
- Chilled water systems
- Heating water systems
- Potable water distribution
- Commercial HVAC installations
- Air Handling Units (AHUs)
- Pump stations
- District heating
- District cooling
- Industrial water services
- Hotels
- Hospitals
- Office buildings
- Educational facilities
- Mechanical plant rooms.
Technical Specifications
| Specification | Value |
|---|---|
| Brand | Crane Fluid Systems |
| Model | F621 |
| Product Type | Semi-Lugged Butterfly Valve |
| Operation | Lever Operated |
| Valve Standard | BS EN 593 |
| Size Range | DN50–DN200 |
| Pressure Rating | PN16 / ANSI Class 125 |
| Body Material | Ductile Iron ASTM A536 64-45-12 |
| Disc Material | Aluminium Bronze ASTM B148 C954 |
| Seat Material | WRAS Approved EPDM |
| Stem Material | Stainless Steel |
| Temperature Range | -10°C to +100°C (WRAS approval to 80°C) |
| End Connection | BS EN 1092-2 PN10/PN16, ANSI B16.1 Class 125 |
| Surface Protection | Fully Bonded Epoxy Coating |
| Corrosion Protection | C3 Medium Environment |
| Certification | WRAS Approved (selected potable water applications) |
Why Choose the Crane F621?
The Crane F621 Semi-Lugged Butterfly Valve combines robust ductile iron construction, WRAS-certified potable water performance, and dependable quarter-turn operation in a compact and maintenance-free design. Its aluminium bronze disc, epoxy-coated body, and anti-blow-out stem provide outstanding durability in heating, cooling, and water distribution systems. With compatibility for both PN16 and ANSI Class 125 flanges, the F621 offers engineers and contractors a versatile, high-performance isolation valve for commercial and industrial applications.
