CENTER DISC LUG TYPE BUTTERFLY VALVE

Technical Detail

  • Design & Manufacturing Std : API:609 / IS:13095
  • Testing& Inspection Std : API:598 / IS:13095
  • Pressure Rating : 10 BAR Max (140 PSI)
  • Temp. Rating : Material Will be Selected According to Services

Design Feature

  • The unique Center Line seat and disc design insures positive valve sealing while maintaining low seating torque.
  • All Center Line Butterfly Valve discs are precision machined to a half ball profile, providing a precise disc to seat relationship.
  • Center Line’s cartridge style seat incorporates an elastomeric bonded to a phenol stabilizing ring, eliminating elastomeric movement and reducing seat tearing or fatiguing due to bunching.
  • Center Line’s basic three bushing design completely isolates the valve shaft from the body, resulting in increased control of the valve disc, lower valve seating torque, and longer valve life.
  • The Center Line cartridge seat has a much smaller mass of elastomeric than traditional boot seat designs, limiting seat swell and the accompanying variations in seating torque.

Material Detail

Part No. Part Name Material
01 Body C.I./ C.S. / S.S.304 / S.S.316 with Integral Moulded EPDM/Viton Rubber Seat on Body
02 Disc S.G. Iron (Black Epoxy Powder Coated & Nylon Coated) C.S. / S.S.304 / S.S.316
03 Stem AISI 410 / S.S.304 / S.S.316
04 ‘O’ Ring Nitrile / EPDM / Viton
05 Lever M.S./ S.S./ Cast Iron
Hyd. Test Pressure
Pressure Rating Body Seat
PN-10 15 Kg/Cm² 10 Kg/Cm²
PN-16 24 Kg/Cm² 17.6 Kg/Cm²

Seat

EPDM

-20°C to 120°C

NBR

-10°C to 80°C

Hypalon

-20°C to 135°C

Viton

-18°C to 150°C

Silikon

-20°C to 180°C

BUTTERFLY VALVE OFFSET DISC

Technical Detail

  • Design & Manufacturing Std : API:609 / BS:5155 / MSS SP67 & ISO 5752
  • Testing& Inspection Std : API:598 / BS:6755 Part-I
  • Size Range : 50mm to 700mm
  • Pressure Rating : 16 Bar Max.
  • Temp. Rating : Material Will be Selected According to Services
  • End Connection : F/E Drill as per Table-D,E & F or BS:4504, PN-10, PN-16 Table 6,7, & 8 of IS:6418 Table11,15 & 17 of IS:6392

Material Detail

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Part No.Part Name Material
01 Body C.I./ WCB / S.G.I / CF8 / CF8M
02 Disc C.I./ WCB / S.G.I / CF8 / CF8M / AB-2
03 Shaft S.S.410/S.S.304 / S.S.316
04 Disc Seat Nitrile/ EPDM / Silicon / Viton / Hyplon
05 ‘O’ Ring Nitrile/ EPDM / Silicon / Viton / Hyplon
06 Flow Control Lever M.S. Fabricated
07 Scale Plate M.S. Fabricated
08 Brg. Bush G.M./ Bronze / PTFE / GF-PTFE / GFT / S.S.304 / S.S.316
09 Clamping Ring G.M./ Bronze / M.S. / S.S.304 / S.S.316
10 Bottom Cover G.M./ Bronze / M.S. / S.S.304 / S.S.316 / C.I. / WCB
11 Gland Packing Asbestos/ PTFE / Grafoil
12 Gland Bush S.S.410/ S.S.304 / S.S.316
13 Body Seat S.S.410/ S.S.304 / S.S.316
Hyd. Test Pressure
Pressure Rating Body Seat
PN-10 15 Kg/Cm² 10 Kg/Cm²
PN-16 24 Kg/Cm² 17.6 Kg/Cm²
150# 31 Kg/Cm² 21 Kg/Cm²

Seat

EPDM

-20°C to 120°C

NBR

-10°C to 80°C

Hypalon

-20°C to 135°C

Viton

-18°C to 150°C

Silikon

-20°C to 180°C