Double stem wafer butterfly valve

Size Range: 2~8"(DN50~DN200)

Pressure: PN10, PN16, Class125

Body Materials: Cast Iron, Ductile Iron

Seat Materials: NBR, EPDM, VITON, PTFE

Disc Materials: Ductile Iron, WCB, CF8,CF8M, Al-bronze C958

Stem Materials: SS416, SS304, SS316

Introduction

Double stem wafer butterfly valve Features

24 months guarantee

Zero Leakage

Bi-Directional

Low Torque,long life cycle

360°polished disc assures positive on-off

Epoxy coated body,smooth surface

Various kinds of materials,applicable to different medium

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

Product Advantage

1、The length of the short structure can save raw materials and installation space, and also effectively support the strength of the pipeline

2、The valve block is the correct movement of the gate, extrusion fast, to ensure effective sealing valve

3、Triangle support material, guarantee the required mechanical properties

4、According to different working conditions demand design V, triangle, or five corners and other ports, in order to meet the needs of various flow regulation

5、No groove at the bottom to make sure no slag and full bore flow

6、Bundor valve strict implementation of the API598 experimental standard, for each product to implement 100% positive and negative double pressure test, guarantee delivery to customers is 100% qualified products

7、Bundor Group dedicated to the dedication of the valve for 23 years, with professional production, sales, research and after-sales team,we are your strong backing.

Standard Test

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.

Parameters

 

SIZE A B C L ANSI 150B DIN PN 10 DIN PN 16 JIS 10K ISO  5211 Top 
Flange
mm in øK N-ød øK N-ød øK N-ød øK N-ød øD øD1 N-øG
40 1.5" 67 141 32 33 98.5 4-ø16 110 4-ø18 110 4-ø18 105 4-ø19 65 50 4-ø8 F05
50 2" 67 141 32 43 120.6 4-ø19 125 4-ø18 125 4-ø18 120 4-ø19 65 50 4-ø8 F05
65 2½" 75 151 32 46 139.7 4-ø19 145 4-ø18 145 4-ø18 140 4-ø19 65 50 4-ø8 F05
80 3" 95 160 32 46 152.4 4-ø19 160 8-ø18 160 8-ø18 150 8-ø19 65 50 4-ø8 F05
100 4" 111 180 32 52 190.5 8-ø19 180 8-ø18 180 8-ø18 175 8-ø19 90 70 4-ø10 F07
125 5" 129 193 32 56 215.9 8-ø22.4 210 8-ø18 210 8-ø18 210 8-ø23 90 70 4-ø10 F07
150 6" 142 207 32 56 241.3 8-ø22.4 240 8-ø22 240 8-ø22 240 8-ø23 90 70 4-ø10 F07
200 8" 170 240 45 60 298.4 8-ø22.4 295 8-ø22 295 12-ø22 290 12-ø23 125 102 4-ø12 F10
250 10" 206 270 45 68 361.9 12-ø25.4 350 12-ø22 355 12-ø26 355 12-ø25 125 102 4-ø12 F10
300 12" 238 316 45 78 431.8 12-ø25.4 400 12-ø22 410 12-ø26 400 16-ø25 125 102 4-ø12 F10
Application
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