Butterfly Wafer valves

Created by an experienced team of valve experts

Size Range

  • 32mm to 600 mm dia (1 ¼” to 24”)

Operating Options

  • Lever/Gear Box/Pneumatic Actuator

Salient Features

  • Body : Wafer
    Wafer type valve bodies are provided with 4 centering lugs to enable the valve to be appropriately centered between flanges drilled according to various standards namely DIN 2501 PN 6 / 10 /16, EN1092 - 2 PN 6 /10 /16, BS 4504 PN 6 / 10 / 16, BS 10 table D & E, ANSI 125 / 150, AS 2129 table D & E, IS 6392 table 10 to 20, IS 6418 table 6 to 9. For mounting with any other flanges SAAPL is to be contacted.
butterfly-lug-valves-detail
  • Long neck body
    The valves are provided with long neck to enable application of sufficient insulation while used on HVAC lines.
  • Single Piece Stem-upto 12” (300mm)
    Single piece stem for positive disc alignment is retained inside the body by means of a retainer to ensure the stem is anti-blow out.
  • Internal stem to disc connection
    A very positive internal square drive unlike grooved pin drive, where the pins often fail and lead to leakage and failure in operation.
  • Mounting pad
    Valves are provided with actuator mounting pads according to ISO 5211 for direct mounting actuator and gear units. No necessity for additional mounting bracket and coupling arrangements.
  • Mounting pad details

    DN b Øc e øf Ød
    32 11 F05‐50 / F07‐70 22.0 90 7 / 10 4
    40 11 F05‐50 / F07‐70 22.0 90 7 / 10 4
    50 11 F05‐50 / F07‐70 22.0 90 7 / 10 4
    65 11 F05‐50 / F07‐70 22.0 90 7 / 10 4
    80 11 F05‐50 / F07‐70 22.0 90 7 / 10 4
    100 14 F07‐70 22.0 90 10 4
    125 14 F07‐70 22.0 90 10 4
    150 14 F07‐70 22.0 90 10 4
    200 17 F10‐102 34.5 150 12 4
    250 22 F10‐102 34.5 150 12 4
    300 27 F12‐125 34.5 150 14 4
    350 27 F12‐125 35 150 14 4
    400 27 F14‐140 35 175 18 4
    450 27 F14‐140 35 175 18 4
    500 36 F14‐140 46 175 18 4
    600 46 F16‐165 55 210 23 4
  • Epoxy Powder coated
    Valve is powder coated using state of the art electro static powder coating equipment for excellent corrosion, abrasion resistance and glossy finish.
  • Replaceable liners
    The liners are provided with hard phenolic / Aluminum back-up enabling easy replacement and increased valve life. These hard backup replaceable liners possess advantages of both loose liners and body in-situ molded liners.
  • Stretch Resistant
    Valves with loose liners, when operated frequently, flex the seats beyond fatigue limit and the seats get torn. SAAPL seats, integrally molded and bonded to hard back-up rings, have superior resistance to flexing and stretching.
  • Better strength
    SAAPL liners possess necessary strength against high velocities of flowing fluid because of the bonding. Also, they do not buckle when sandwiched between flanges.
  • No Corrosion of Body material underneath the seat
    Valves with loose liners and without the back-up expose the body material to the line fluids when the seat is torn. SAAPL liners with hard back up eliminate such a possibility.
  • Increased Valve Life
    In the case of valves with seats molded directly to the body, the valve is condemned if the liner is torn. SAAPL valves take second innings with the newly replaced liners.
  • Low Inventory Cost
    Keeping stock of just SAAPL liners will be cheaper to keeping in-situ body molded valves.
  • Changeable to Suit the Service Condition
    In SAAPL valves, changing over to a liner of different polymer to suit the change in process (fluid, concentration levels and temperature) is easy and cheaper than replacing the whole valve.
  • Tight Shut-off
    The valves will have perfect bi-directional sealing against the rated differential pressures and in vacuum applications.
    Disc is available in different options to suit various service media and conditions. Choice of materials will include SG iron, Stainless steel and Aluminum bronze.
    Wide choice of seat liner material is available to suit different service and temperature requirements. The seats are permanently engraved with the code letters given inside brackets for easy identification, to avoid mix-up and to ensure use of right material for right application.
butterfly-valves-machinery

Material of construction

S.NO Name Material
A1 Body Cast Iron (Fussion Bonded Epoxy Powder Coated)
A2 Disc Ductile Iron (Rilsan coated) / SS (CF8M)/ Aluminium Bronze
A3 Stem SS 420
A4 Liner(Seat) BUNA(Nitrile) / EPDM / VITON

Dimensions

Valve Size A ØB C D E F G H J K L M N R W Ød
IN MM Body Seat IN MM IN MM
1 32 "32.0
[1.26]"
"36.0
[1.42]"
"151.0
[5.95]"
"59.0
[2.32]"
"140.5
[5.53]"
"14.5
[0.570]"
4 1/2-13 UNC "98.0
[3.86]"
"90.0
[3.54]"
"10.0
[0.39]"
"70.0
[2.76]"
"32.0
[1.26]"
"0.496
0.494"
"12.60
12.55"
"0.313
0.311"
"7.95
7.90"
"18.0
[0.71]"
"28.0
[1.10]"
"80.0
[3.15]"
1-1/2 40 "32.0
[1.26]"
"36.0
[1.42]"
"151.0
[5.95]"
"59.0
[2.32]"
"140.5
[5.53]"
"14.5
[0.570]"
4 1/2-13 UNC "98.0
[3.86]"
"90.0
[3.54]"
"10.0
[0.39]"
"70.0
[2.76]"
"32.0
[1.26]"
"0.496
0.494"
"12.60
12.55"
"0.313
0.311"
"7.95
7.90"
"18.0
[0.71]"
"28.0
[1.10]"
"80.0
[3.15]"
2 50 "42.4
[1.67]"
"46.0
[1.81]"
"165.0
[6.50]"
"60.0
[2.36]"
"140.5
[5.53]"
"14.5
[0.570]"
4 5/8-11 UNC "120.6
[4.75]"
"90.0
[3.54]"
"10.0
[0.39]"
"70.0
[2.76]"
"32.0
[1.26]"
"0.496
0.494"
"12.60
12.55"
"0.392
0.390"
"9.95
9.90"
"34.0
[1.34]"
"37.0
[1.46]"
"92.0
[3.62]"
2-1/2 65 "45.4
[1.79]"
"49.0
[1.93]"
"185.0
[7.28]"
"70.0
[2.76]"
"153.0
[6.02]"
"14.5
[0.570]"
4 5/8-11 UNC "139.7
[5.50]"
"90.0
[3.54]"
"10.0
[0.39]"
"70.0
[2.76]"
"32.0
[1.26]"
"0.496
0.494"
"12.60
12.55"
"0.392
0.390"
"9.95
9.90"
"47.0
[1.85]"
"40.0
[1.58]"
"109.0
[4.29]"
3 80 "45.4
[1.79]"
"49.0
[1.93]"
"192.5
[7.58]"
"80.0
[3.150]"
"157.5
[6.20]"
"14.5
[0.570]"
4 5/8-11 UNC "152.5
[6.00]"
"90.0
[3.54]"
"10.0
[0.39]"
"70.0
[2.76]"
"32.0
[1.26]"
"0.496
0.494"
"12.60
12.55"
"0.392
0.390"
"9.95
9.90"
"66.0
[2.60]"
"40.0
[1.58]"
"125.0
[4.92]"
4 100 "51.4
[2.02]"
"55.0
[2.17]"
"228.6
[9.00]"
"90.0
[3.54]"
"176.0
[6.93]"
"14.5
[0.570]"
8 5/8-11 UNC "190.5
[7.50]"
"90.0
[3.54]"
"10.0
[0.39]"
"70.0
[2.76]"
"32.0
[1.26]"
"0.621
0.619"
"15.77
15.72"
"0.431
0.429"
"10.95
10.90"
"92.0
[3.62]"
"42.0
[1.65]"
"147.0
[5.79]"
5 125 "55.4
[2.18]"
"59.0
[2.32]"
"254.0
[10.00]"
"112.0
[4.40]"
"191.0
[7.52]"
"14.5
[0.570]"
8 3/4-10 UNC "215.9
[8.50]"
"90.0
[3.54]"
"10.0
[0.39]"
"70.0
[2.76]"
"32.0
[1.26]"
"0.745
0.743"
"18.92
18.87"
"0.510
0.508"
"12.95
12.90"
"118.0
[4.65]"
"46.0
[1.81]"
"177.0
[6.97]"
6 150 "55.4
[2.18]"
"59.0
[2.32]"
"285.0
[11.22]"
"128.0
[5.04]"
"202.5
[7.97]"
"14.5
[0.570]"
8 3/4-10 UNC "241.3
[9.50]"
"90.0
[3.54]"
"10.0
[0.39]"
"70.0
[2.76]"
"32.0
[1.26]"
"0.745
0.743"
"18.92
18.87"
"0.510
0.508"
"12.95
12.90"
"146.0
[5.75]"
"46.0
[1.81]"
"202.0
[7.95]"
8 200 "59.4
[2.34]"
"63.0
[2.48]"
"343.0
[13.50]"
"160.2
[6.31]"
"243.5
[9.59]"
"15.0
[0.590]"
8 3/4-10 UNC "298.0
[11.74]"
"150.0
[5.91]"
"12.0
[0.47]"
"102.0
[4.02]"
"45.0
[1.77]"
"0.870
0.868"
"22.10
22.05"
"0.628
0.626"
"15.95
15.90"
"195.0
[7.68]"
"48.0
[1.89]"
"257.0
[10.12]"
10 250 "67.4
[2.65]"
"71.0
[2.80]"
"406.4
[16.00]"
"197.0
[7.76]"
"273.0
[10.75]"
"15.0
[0.590]"
12 7/8- 9 UNC "361.4
[14.23]"
"150.0
[5.91]"
"12.0
[0.47]"
"102.0
[4.02]"
"45.0
[1.77]"
"1.120
1.118"
"28.45
28.40"
"0.864
0.862"
"21.95
21.90"
"245.0
[9.65]"
"58.0
[2.28]"
"316.0
[12.44]"
12 300 "77.5
[3.05]"
"82.5
[3.25]"
"482.6
[19.00]"
"233.0
[9.17]"
"315.5
[12.42]"
"20.0
[0.790]"
12 7/8- 9 UNC "431.8
[17.00]"
"150.0
[5.91]"
"14.0
[0.55]"
"125.0
[4.92]"
"45.0
[1.77]"
"1.244
1.242"
"31.60
31.54"
"0.943
0.941"
"23.95
23.90"
"295.0
[11.62]"
"64.0
[2.52]"
"372.0
[14.65]"
14 350 "77.6
[3.06]"
"82.5
[3.25]"
"533.4
[21.00]"
"267.0
[10.51]"
"350.0
[13.78]"
"20.0
[0.79]"
12 1/2-13 UNC "476.2
[18.75]"
"150.0
[5.91"
"14.0
[0.55]"
"125.0
[4.92]"
"45.0
[1.77]"
"1.244
1.242"
"31.60
31.54"
"0.943
0.941"
"23.95
23.90"
"324.4
[12.77]"
"64.0
[2.52]"
"405.0
[15.94]"
16 400 "102.0
[4.02]"
"106.5
[4.19]"
"597.0
[23.50]"
"302.0
[11.89]"
"405.0
[15.94]"
"25.0
[0.99]"
16 1 - 8 UNC "539.7
[21.25]"
"175.0
[6.89]"
"14.0
[0.55]"
"125.0
[4.92]"
"50.0
[1.97]"
"1.305
1.303"
"33.15
33.09"
"1.061
1.059"
"26.95
26.90"
"377.5
[14.86]"
"80.0
[3.15]"
"469.0
[18.46]"
18 450 "112.0
[4.41]"
"118.0
[4.65]"
"635.0
[25.00]"
"330.0
[12.99]"
"422.00
[16.61]"
"25.0
[0.99]"
16 1 1/8 - 7 UNC "577.8
[22.75]"
"175.0
[6.89]"
"18.0
[0.71]"
"140.0
[5.51]"
"50.0
[1.97]"
"1.494
1.492"
"37.95
37.89"
"1.061
1.059"
"26.95
26.90"
"427.6
[16.84]"
"90.0
[3.54]"
"523.0
[20.59]"
20 500 "127.0
[5.00]"
"132.0
[5.20]"
"710.0
[27.95]"
"367.0
[14.45]"
"490.0
[19.29]"
"25.0
[0.99]"
20 1 1/8 - 7 UNC "635.0
[25.00]"
"175.0
[6.89]"
"18.0
[0.71]"
"140.0
[5.51]"
"60.0
[2.36]"
"1.619
1.617"
"41.12
41.06"
"1.258
1.256"
"31.95
31.90"
"470.2
[18.51]"
"100.0
[3.94]"
"570.0
[22.44]"
24 600 "152.0
[5.98]"
"160.0
[6.30]"
"850.0
[33.46]"
"446.0
[17.56]"
"572.5
[22.54]"
"25.0
[0.99]"
20 1 1/4 - 7 UNC "749.3
[29.50]"
"210.0
[8.27]"
"22.5
[0.89]"
"165.0
[6.50]"
"70.0
[2.76]"
"1.993
1.990"
"50.62
50.55"
"1.415
1.413"
"35.95
35.90"
"572.7
[22.55]"
"110.0
[4.33]"
"689.0
[27.13]"

Choice of materials

  • Disc is available in different options to suit various service media and conditions. Choice of materials will include SG iron, Stainless steel and Aluminum bronze. Wide choice of seat liner material is available to suit different service and temperature requirements. The seats are permanently engraved with the code letters given inside brackets for easy identification, to avoid mix-up and to ensure use of right material for right application.
DISC SEAT (CODE) TEMPERATURE APPLICATION
MINUMUM MAXIMUM
SG Rilsan Coated Nitrile (BB) ‐10°C +80 °C Water, natural gas, Petroleum oils
Stainless Steel High Temperature EPDM (EH) ‐10°C +120°C Hot water, Ketones, steam, organic and inorganic dilute acids
Stainless Steel Fluorocarbon Rubber (VV) ‐ Viton ‐10°C +150°C Petroleum oils, selected phosphate ester fluids, acids other than hot hydrofluoric
Stainless Steel Chlorosulfonated Polyethylene (HH) ‐ ‐10°C +70°C Or chlorosulfonic acids Acids
Stainless Steel Hypalon Silicone (SS) ‐10°C +150°C Dry heat, engine & transmission oils
SG Rilsan Coated EPDM (EH) ‐10°C +90°C Glycol base Brake fluids & General applications

Torque details (Nm)

DN 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600
16 bar 9 9 11 17 30 56 65 90 169 230 290 1100 1450 1700 2400 3400
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