Interlocking centerline butterfly valve (worm gear)
Technical Specifications
Nominal Pressure: PN1.0 - 1.6 MPa
Nominal Diameter: DN50 - DN1200
Connection Type: Flanged
Operating Medium: Water, oil, gas and various corrosive media
Applicable Temperature: -10℃ - 120℃
Connection Standards: GB·ANSI·DIN·API·ISO·BS
Valve Body Material: Cast iron; ductile iron; carbon steel; stainless steel; aluminum bronze
Valve Seat Material: Rubber
Valve Plate Material: Stainless steel; aluminum bronze; Machined cast iron
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Product Details
Technical standards
1. As a device for regulating or cutting off the medium in the pipeline.2. Applicable to handle control devices (DN50~300), worm gears, electric and pneumatic control devices.
3. The design and manufacturing standards comply with API 609.
4. The pressure test complies with API 598.
5. The structural length complies with API 609.
6. The side flange standards comply with GB/T17241, including PN1.0MPa, PN1.6MPa and ASME B16.1 125PSI.
Product features
1. Reduce the rotational torque, support the valve stem, and ensure an effective separation between the valve stem and the valve body to minimize the wear of the valve stem.2. After polishing treatment, it has a precise fit with the valve seat.
3. Achieve zero leakage requirements for the air tightness test, with a small opening and closing torque, and extend the service life of the valve seat.
4. The valve stem seal is not prone to deformation, thus avoiding the common valve stem leakage phenomenon.
5. High precision, strong strength, suitable for the installation of handles and other control devices.
6. Firmly connects the valve stem and valve plate, with vibration and detachment prevention features, and easy to replace.
7. Good integrity, facilitating the opening and closing of the valve plate control.
8. Features no detachment, anti-tensile, anti-leakage, and easy replacement.
9. As a device for regulating or cutting off the medium in the pipeline.
10. Suitable for handle control devices (DN50~300), worm gear worm, electric and pneumatic control devices.
Main dimensions and weight（PN1.0/1.6MPa）
| DN(mm) | A | B | L | D1 | H4 | n-Φ | K | E | 4-Φ1 | Φ2 | G | Weight 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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