Wafer high performance butterfly valve

Body:  ASTM A536 65-45-12, WCB, CF8M
Disc:  CF8,CF8M,CF3M
Seat:  RPTFE,SS316+RPTFE,SS316
Connection:  Wafer
Size:  3″-24″
Pressure:  Class150,Class300
Flange standard: ASME B16.5 Class150,Class300; EN1092 PN16, PN25, PN40







 

Category:

Description

Wafer high performance butterfly valve provides a cost-effective solution for a wide range of applications where bubble-tight shut-off is required. Utilizing an eccentric disc and offset shaft, the design incorporates the flexible-lip sealing system into a lightweight, compact body. The result is that in many cases the valve can replace globe valve and gate valve yet easier operating, longer lasting and lower cost.

Significant performance makes the valve widely used in many applications such as Airport refueling, Hydrocarbon processing, HVAC, Air treatment, Chemical processing, Purified gas, Steam and vacuum services, Potable water, Powder and pulp processing, etc.Wafer design makes the valve convenient for connection between flanges and save length in pipe line.

FEATURES

  • One-piece stem design with ISO 5211 square drive
  • ISO 5211 direct mounting flange on the valve body
  • Easy-adjust gland packing accessible with actuator mounted in place
  • Belleville washers on the gland nut offer reliable primary sealing between shaft and packing
  • Retaining ring for both equably pressing on packing and stem blowout proof
  • Multiply rows of RPTFE chevron for soft seat valve and Graphite chevron for fire safe and metallic seat
  • Extended neck for pipe insulation
  • Self-energized seat resulting in longer life and reduced maintenance·Pin-less shaft to disc connection makes the valve convenient for parts replacement and reliable even under corrosion
  • Seat retainer supports the seat and allows for easy changeout
  • Double offset disc reducing the valve torque
  • Alloy harden disc surface for metal seat increases the sealing life time
  • Integral disc stop prevent disc from over travel
  • Soft seat, fire safe seat and metallic seat are replaceable each other
  • PTFE lined SS316 bearing support stem and increase service life
  • Thrust ring for anti-blowout and anti-static

PARTS LIST AND MATERIAL SPECIFICATION

No.Part nameMaterial
1BodyWCBCF8M
2DiscCF8*CF8M*
3SeatRPTFE,SS316+RPTFE,SS316
4Shaft17-4 PHSS,1.4462
5Packing glandCF8
6Bottom coverSame as body
7Cover sealGraphite
8Thrust washerSS316
9Seat retainerWCBCF8M
10GasketRPTFE, Graphite
11Retaining ringSS304
12PackingRPTFE, Graphite
13Packing ringSS316
14BearingSS316+PTFE
15Thrust bearingSS316
16KeySS316
17BoltSS316
18BoltSS304
19BoltSS304
20NutSS304
21Belleville washerSS304
*Supersonic spray welding of different materials on sealing surface of metal seating valve according to requirements

TECHNICAL DATA

ConnectionWafer
Size3″-24″
PressureClass150,Class300
Flange standardASME B16.5 Class150,Class300; EN1092 PN16, PN25, PN40
Face to faceAPI 609 Category B valve Wafer
Pressure testAPI 598
TemperaturePTFE seat -29°C to +200°C,metal seat -29°C to +400°C
OperatorLever,Gear box,Pneumatic actuator,Electric actuator

CLASS 150LB

SIZEABCDETop FlangeGLWT(kg)
DNINCHClass150
502″1267913.59211F0545433
652 1/2″1268713.510511F0545464
803″14510017.513011F0772485
1004″17012417.515714F0791546
1255″18514417.518614F07114579
1506″20315018.521617F101455712
2008″23918624.526922F101926419
25010″27522624.532422F102407133
30012″3072513038027F122858142
35014″3372943041627F123289261
40016″3683203047627F1437310288
45018″4063413953436F16422114135
50020″4423834958846F16470127173
60024″4934424969246F25570154272

CLASS 300LB

SIZEABCDETop FlangeGLWT(kg)
DNINCHClass300
502″1267913.59211F0545433
652 1/2″1268713.510511F0545464
803″14510017.513011F0772485
1004″17012417.515714F0791546
1255″18514417.518614F07114579
1506″20315018.521617F101455712
2008″25720424.526922F101927323
25010″2882383032427F122408339
30012″3302683038027F122859255
35014″3372943941636F1432011779
40016″3683204947646F16363133103
45018″4063414953446F16400149170
50020″4423834958846F25450159225
60024″5004425869255F25550181338