Grooved End Lever Operated Butterfly Valve for Fire Protection：
This lever operated grooved butterfly valve is specifically designed for fire protection sprinkler systems, HVAC water supply and fire fighting pipeline projects. The ductile iron body with red epoxy coating provides excellent corrosion resistance, while the EPDM/NBR rubber seat ensures reliable bubble-tight sealing for water media. The grooved end connection allows quick and easy installation with standard fire protection grooved pipe fittings, no welding or flange bolts required, which significantly saves on-site construction time and labor cost. The direct hand lever drive enables fast 90-degree opening/closing, ideal for emergency pipeline control in fire systems. Standard sizes range from DN50 to DN200, with PN1.6 MPa pressure rating and working temperature from 0℃ to 80℃. All valves are tested according to fire protection standards, making them widely used in commercial buildings, industrial plants and public facilities fire protection networks.
Key Technical Specifications
Item
Specification
Product Type
Grooved End Butterfly Valve
Actuator Type
Lever Handwheel
Nominal Pressure
PN1.6 MPa
Working Temperature
0℃ ~ 80℃
Applicable Medium
Water (Fire Protection, HVAC)
Connection Type
Grooved End (Fits standard fire protection grooved pipe fittings)
Seat Material
EPDM / NBR Rubber
Body Material
Ductile Iron with Red Epoxy Coating
Size Range
DN50, DN65, DN80, DN100, DN125, DN150, DN200
Main Component Materials
Valve Body: Ductile Iron with Red Epoxy Coating
Butterfly Disc: Ductile Iron / Stainless Steel
Valve Stem: Stainless Steel
Seat Seal: EPDM / NBR Rubber
Product Features
1. Quick Grooved Installation: No welding or flange bolts needed, compatible with standard fire protection grooved pipe fittings, fast on-site assembly.
2. Fire Protection Certified Design: Red epoxy coated body, reliable sealing for water media, tested to meet fire safety standards.
3. Low Operating Torque: Lightweight lever design for easy manual opening/closing, suitable for emergency pipeline control.
4. Compact & Space-Saving: Short face-to-face length, ideal for tight spaces in building fire protection systems.
5. Long Service Life: Epoxy coating prevents rust and corrosion, rubber seat maintains tight seal for long-term use.
6. Cost-Effective Solution: Reduces installation labor and material cost compared to flanged valves.
Application Industries
This grooved butterfly valve is widely used in:
• Fire sprinkler systems in commercial buildings, hotels and shopping malls
• HVAC chilled water and hot water supply pipelines
• Industrial plant fire protection and circulating water systems
• Residential building fire safety networks
• Public facilities such as schools, hospitals and stadiums
