DN300
Water
Worm Gear
Clamp
Centre Sealing
Supercharging Pressured Sealed
Normal
Low Pressure (Pn<1.6mpa)
Normal Temperature (-40°C<T<120°C)
Soft Sealed
Casting
JIS/DIN/ANSI
Industrial Usage, Water Industrial Usage, Household Usage
China
Soft Sealing
ZHONGHUI
Plywood Non-Fumigation
DN300
Tianjin
8481804090
Product Description

Gearbox Butterfly Valve Flange Connection
Size:DN50-DN1200
Pressure:PN10/PN16,JIS 5K/10K,Class 150
Temperature:-30ºC - 135ºC
Body material:Cast Iron, Ductile Iron, Aluminum Stainless Steel,CF8,CF8M,CF3M
Applicable medium:Potable Water, Wastewater, Seawater, HVAC
Introduction
Disc: Stainless Steel CF3M,CF3,CF8M, Nylon Coated Ductile Iron, Aluminum Bronze, Double Stainless Steel,2507,1.4529
Stem: 416 Stainless Steel,304 Stainless Steel,316 Stainless Steel
Seats: NBR,EPDM,PTFE,VITON, FKM* Polyurethane
Body style: Double Flanged
Features
Sanitary & Chemical applications
One-piece disc/stem
High Cv, low pressure drop
Size DN(mm) | L | 1.0MPa | 1.6MPa | ||||||
D | D1 | H | H1 | Z-φd | D | D1 | Z-φd | ||
50 | 108 | 165 | 125 | 202 | 77 | 4-18 | 165 | 125 | 4-18 |
65 | 112 | 185 | 145 | 213 | 93 | 4-18 | 185 | 145 | 4-18 |
80 | 114 | 200 | 160 | 221 | 100 | 4-18 | 200 | 160 | 4-18 |
100 | 127 | 220 | 180 | 234 | 113 | 4-18 | 220 | 180 | 4-18 |
125 | 140 | 250 | 210 | 253 | 123 | 4-18 | 250 | 210 | 4-18 |
150 | 140 | 285 | 241 | 269 | 193 | 4-18 | 285 | 240 | 4-18 |
200 | 152 | 340 | 295 | 316 | 172 | 4-18 | 340 | 295 | 4-18 |
250 | 165 | 395 | 350 | 358 | 202 | 4-18 | 405 | 355 | 4-18 |
300 | 178 | 445 | 400 | 384 | 218 | 4-18 | 460 | 410 | 4-18 |
350 | 190 | 505 | 460 | 439 | 253 | 16-22 | 520 | 470 | 16-26 |
400 | 216 | 565 | 515 | 500 | 300 | 16-26 | 80 | 525 | 16-30 |
450 | 222 | 615 | 565 | 528 | 328 | 20-26 | 640 | 585 | 20-30 |
500 | 229 | 370 | 620 | 552 | 352 | 20-26 | 710 | 650 | 20-33 |
600 | 267 | 780 | 725 | 669 | 397 | 20-30 | 840 | 770 | 20-36 |
700 | 292 | 895 | 840 | 745 | 498 | 24-30 | 910 | 840 | 24-36 |
800 | 318 | 1015 | 950 | 803 | 571 | 24-33 | 1025 | 950 | 24-39 |
900 | 510 | 1115 | 1050 | 880 | 615 | 28-33 | |||
1000 | 550 | 1230 | 1160 | 935 | 705 | 28-36 | |||
1200 | 630 | 1455 | 1380 | 1067 | 827 | 32-39 |

Double Flange Butterfly Valve
1. Size: DN50-600,DN750.
2. Body: Cast iron/Ductile iron/Cast steel;
3. Disc: Ductile iron/Stainless steel/Aluminum Bronze
4. Seat: Nitrile rubber/ EPDM (Ethylene Propylene Diene Monomer)/ PTFE (Poly tetra fluoroethylene)/ Fluororubber
Nitrile rubber: Excellent oil resistance, high wear resistance, good heat resistance, strong adhesion.
EPDM: (1) Low price and high cost performance
(2) Excellent aging resistance. When used together with other unsaturated diene rubbers such as NR, SBR, BR, NBR, and CR, EPDM can act as a polymer antioxidant or anti-aging agent.
(3) Excellent chemical resistance, acid, alkali, detergent, etc.; polar oil resistance.
(5) Wide application temperature range
PTFE: Excellent chemical stability, corrosion resistance, sealing, high lubricity and non-stickiness and good resistance to aging. High temperature resistance, low temperature resistance. Corrosion resistance, inert to most chemicals and solvents, resistant to strong acids and bases, water and various organic solvents.
Fluororubber: High temperature resistance, oil resistance and chemical resistance
5. Available with handles, manual gear operators and electric/pneumatic/hydraulic actuators.
Flange connection size | Main material | Type of drive | ||||||
JIS | DIN | ANSI | BODY | DISC | SEAT | STEM | ||
5K | PN10 | 125LB | FC | FCD/DI | NBR | WCB | Lever Type | Worm Gear |
10K | PN16 | 150LB | FCD/DI | SS | EPDM | SS | Center Handle | Electric Actuator |
SC/WCB | AL-Bronze | PTFE | Pneumatic Actuator | Hydraulic Actuator | ||||
VITON |
technical data:

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