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Lug Butterfly Valve

Lug Butterfly Valve

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  • Lug Butterfly Valve
  • Lug Butterfly Valve
  • Lug Butterfly Valve
  • Lug Butterfly Valve
One-Piece Thru Shaft: Ensures strength and dependability of alve and positive positioning of valve plate.

O-Ring: Helps prevent shaft leakage.

Precision Taper Pin: Ensure positive vibration proof, shaft to disc connection. Field replaceable.

Precision Disc Profile: Provides bubble-tight shut-off and assures maximum effective torque and longer seat life.

Supported Shaft Seal: Bonding of elastomer to phenolic backing ring protects against shaft leakage, a common cause of distortion and deformation.

Applicable to both gaseous mediums and liquid mediums.

Bi-directional shut off.

Optional maintenance pipeline terminal.

Size: 2”-28” / 50mm – 700 mm
Connection type: Lug
Design standard: API 609, BS EN 593, MSS SP-67.
Face-to-Face dimension: API 609, ISO 5752, BS EN 558, BS 5155, MS SP-67.
Flange Drilling: ANSI B 16.1, BS EN 1092, DIN 2501 PN 10/16, BS 10 Table E.
Test: API 598.
Lever / worm gearbox /pneumatic actuator operator.

Pressure & Temperature ratings:
Working Pressure PN10 / PN16
Testing Pressure Shell: 1.5 times rated pressure,
Seat: 1.1 times rated pressure.
Working Temperature -10°C to 80°C (NBR)
-10°C to 120°C (EPDM)
Suitable Media Water, Oil and gas.


Materials:
Parts Materials
Body Cast iron, ductile iron, carbon steel, stainless steel
Disc Nickel ductile iron / Al bronze / Stainless steel
Seat EPDM / NBR / VITON / PTFE
Stem Stainless steel / Carbon steel
Bushing PTFE
“O” ring PTFE
Pin Stainless steel
Key Stainless steel
This kind of butterfly valve is widely utilized in foodstuff, pharmacy, chemical industry etc. and industrial environmental protection, water treatment, high building, water supply and draian tubing line open or close or adjusting medium.

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