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Double Stem Wafer Butterfly Valve with Soft EPDM Seat

Size Range: DN50-DN200

Body Style: Wafer Universal

Pressure: PN10,PN16,Class125,JIS10K

Body Material: Ductile Iron

Disc Material: Ductile Iron Double Shaft ,CF8,CF8M, Stainless Steel Double Shaft

Stem Material: SS416 Two piece Shaft,45# Two Piece Shaft no pin

Seat Material: NBR, EPDM Flexible Seat,Replaceable Seat

Disc Type: Double stem no-pin

Handle: Malleable Iron Lever Handle

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OVERVIEW
Double Stem Wafer Butterfly Valve with Soft EPDM Seat
Features

1.vertical center line disc      
2.Anti-Blow Out Stem
3.Low Friction Body Seat
4.Zero Leakage
5.Small in size  
6.Light in weight
7.Long service life   
8.Can be used in cutting off and regulation medium
9.Simple, compact structure, quick 90 degree on-off operation

Parameters
  

Size A B C L JIS 5K JIS 10K ISO 5211
mm in ØK N-Ød ØK N-Ød ØD ØD1 N-ØG
50 2" 76 140 32 43 105 4-Ø15 120 4-Ø19 65 58 4-Ø8
65 2.5" 85 152 32 46 130 4-Ø15 140 4-Ø19 65 58 4-Ø8
80 3" 95 157 32 46 145 8-Ø19 150 8-Ø19 65 58 4-Ø8
100 4" 110 176 32 52 165 8-Ø19 175 8-Ø19 98 78 4-Ø10
125 5" 125 191 32 56 200 8-Ø19 210 8-Ø23 98 78 4-Ø10
150 6" 139 202 32 56 230 8-Ø19 240 8-Ø23 98 78 4-Ø10
200 8" 175 243 45 60 280 8-Ø23 290 12-Ø23 125 102 4-Ø12
250 10" 203 283 45 68 345 12-Ø23 355 12-Ø25 125 102 4-Ø12
300 12" 238 322 45 78 390 12-Ø23 400 16-Ø25 125 102 4-Ø12
Technology Standard

Adoptive Standards
Valve Design: API 609, MSS SP-67
Face To Face: API 609, MSS SP-67, DIN3202, BS EN558-1
Pressure Test: API 598
Flange Drilling: ANSI B16.1 class125, BS4504 PN10/PN16, DIN2501 PN10/PN16
Top Flange: ISO5211

 

Test Standards
Body Test: 1.5 times the working pressure with water. This test is performed after valve assembly and with disc in half position open, it is called as a body hydro test.
Seat Test: 1.1 times the working pressure with water.
Function / Operation Test: At the time of final inspection, each valve and its actuator (Flow-Control Lever / Gear / Pneumatic Actuator), under goes a complete operating test (Open/Close). This test carried out without pressure and at ambient temperature. It ensures the correct operation of the valve / actuator assembly with accessories such as solenoid valve, limit switches, air filter regulator etc.
Special Test: On request, any other test can be carried out according to special instruction by client

Application

Application
1.Water Treatment Plant     
2.Breweries
3.Drilling Rigs 4. Heating & Air Conditioning
5.Paper Industry   
6.Chemical Industry
7.Gas Plant    
8.Pneumatic Conveyors
9.Sugar Industry   
10.Waste Effluent Treatment Plant
11.Cooling Water Circulation     
12.Compressed Air

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