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CN | EN

Wafer Centre-line Butterfly Valve( Worm Gear )

Technical Parameters

Fluid medium： Water, oil, gas and various corrosive media
Temperature Range： -10℃～120℃
Pressure Ratings： PN1.0～1.6MPa
Size Range： DN50～DN1200
Connection Type： Double folder
Connection standard： GB·ANSI·DIN·API·ISO·BS
Body Materials： Cast iron；Ductile iron；Carbon steel；Stainless stee；Aluminum bronze
Valve seat material： Rubber
Valve plate material： Stainless steel；Aluminum bronze；Ductile iron
Note： All parts can be made of different materials according to actual working conditions.

Product Details

Technical Standard

1.Device for regulating or cutting off medium in pipeline.
2.Suitable for handle control device (DN50~300), worm gear, electric and pneumatic control device.
3.Design and manufacturing standards comply with API 609.
4.Pressure test is in accordance with API 598.
5.The structure length is in accordance with API 609.
6.Side flange standard in accordance with GB/T17241 PN1.0MPa, PN1.6MPa and ASME B16.1 125PSI.


Product Features

1.Reduce the rotational torque, support the stem, and make it separate from the valve body effectively, reduce the wear of the valve stem.
2.After polishing treatment, with the valve seat precision.
3.To achieve zero leakage of air tightness test requirements, the opening and closing torque is small, extend the service life of the valve seat.
4.Stem seal is not easy to deform, thereby avoiding the usual stem leakage.
5.The utility model has the advantages of high precision and high strength, and is suitable for the installation of the handle and other control devices.
6.The utility model is characterized in that the valve rod and the valve plate are firmly connected with the valve plate, and the utility model has the characteristics of anti vibration and easy replacement.
7.Good integrity, easy to control the opening and closing of the valve plate.
8.The utility model has the advantages of no shedding, tensile resistance, leakage prevention and convenient replacement.
9.Device for regulating or cutting off medium in pipeline.
10.Suitable for handle control device (DN50 ~ 300), worm gear, electric and pneumatic control device.


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Main overall connection dimensions（PN1.0/1.6MPa）

DN(mm) A B L D1 H4 n-Φ K E 4-Φ1 Φ2 G WT（kg)
50 140 80 43 125 32 4-19 77 57.15 4-6.7 12.6 100 3.34
65 152 89 46 145 32 4-19 77 57.15 4-6.7 12.6 120 3.94
80 159 95 45.21 160 32 8-19 77 57.15 4-6.7 12.6 127 4.05
100 178 114 52.07 180 32 8-19 92 69.85 4-10.3 15.77 156 5.48
125 190 127 55.5 210 32 8-19 92 69.85 4-10.3 18.92 190 7.66
150 203 139 55.75 240 32 8-23 92 69.85 4-10.3 18.92 212 8.5
200 238 175 60.58 295 45 8-23 115 88.9 4-14.3 22.1 268 25
250 268 203 68 350 45 12-23 115 88.9 4-14.3 28.45 325 31.4
300 306 242 76.9 400 45 12-23 140 107.95 4-14.3 31.6 403 45.9
350 368 267 76.17 460 45 16-23 140 107.95 4-14.3 31.6 436 54

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