Electric sandwich type center line butterfly valve

Electric sandwich type center line butterfly valve

Product model: D971X
Nominal diameter: DN50-1200mm
Pressure rating: PN0.6, 1.0, 1.6, 2.5MPa
Body material: WCB, ductile iron
Valve plate material: 304, 316, 316L, 1.4529, 2507, aluminum bronze
Seat seal: NBR, EPDM, VITON, PTFE
Connection mode: sandwich type
Product overview

Electric sandwich center line butterfly valve is an integrated structure, access to 220V AC power supply to control operation, can also be added to the control module, input control signal (4-20mA DC or 1-5V DC) for adjustment and control. The valve has the advantages of strong function, small size, reliable performance, simple matching and large circulation capacity. It is especially suitable for occasions where the medium is viscous, containing particles and fiber properties. Soft seal (rubber ring, PTFE ring) can be selected to reduce leakage (up to 0.01%), high temperature and high pressure conditions can be selected three-eccentric hard seal valve body. It is widely used in the industrial process automatic control system of food, environmental protection, light industry, petroleum, chemical industry, teaching equipment, paper making, power and other industries.


Product characteristics
1, electric opening and closing, with arbitrary adjustment, check and cut-off functions, easy to operate, safe and reliable.
2, small flow resistance, the valve fully open when the flow resistance coefficient does not exceed 0.3.
3, when an accident or power failure, you can manually control the butterfly valve opening and closing.
4, can continuously achieve slow opening, fast opening or fast closing, slow closing action, and effectively prevent the pump outlet medium backflow and water hammer generation.
5, energy saving drive and ordinary butterfly valve the same drive motor can achieve the function of fast closing high-speed small torque and slow closing low section large torque.


  • Application Profile


                design criterion                 GB/T2238-1989
                Flange connection size                 GB/T9113.1-2000;GB/T9115.1-2000;JB78
                structure length
                GB/T12221-1989
                pressure testing                 GB/T13927-2000;JB/T9092-1999



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Main dimensions and weight(PN1.0/1.6MPa)

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