Check valves serve to prevent the backflow of medium in the piping system for protection of important equipments, widely used in the field of potable water, water supply and drainage, sewage disposal, irrigation, air conditioning, fire protection as well as chemical and energy industry.
◔ Material:Ductile Iron EN-GJS-450-10
Valve body, bonnet, disc are all produced in ductile iron material which provides guarantee for high strength and good corrosion resistance.
◔ Fusion bonded epoxy coating
Fusion bonded epoxy coating in accordance with ANSI/AWWA C550 for both interior and exterior surface which provides reliable corrosion resistance.
◔ Small hydraulic friction loss with reasonable structure design
• Connection Ends: BS EN 1092 PN10/PN16, AS 2129 TABLE E, JIS B2212 10K, BS 10 TABLE D/E
• Working Pressure: PN10/PN16
• Temperature Range: 0℃- 80℃
• Coating: Fusion Bonded Epoxy Coating in accordance with ANSI/AWWA C550
Part No. | Part | Standard Specification | Options |
1 | Valve Body | EN-GJS-450-10 |
|
2 | Stem | SS420 | SS304, SS316, SS431 |
3 | Hinge Bushing | Brass Hpb59-1 |
|
4 | Spring | SS304 | SS316 |
5 | Nut | SS304 | SS316 |
6 | Disc | EN-GJS-450-10 |
|
7 | O-Ring | EPDM | NBR |
8 | Hinge bushing | Brass Hpb59-1 |
|
9 | Seat | EN-GJS-450-10 |
|
10 | O-Ring | NBR | EPDM |
11 | Screw | Carbon Steel Zinc Plated | SS304, SS316 |
Note: For special material request other than standard specification, please indicate clearly on the inquiry or order list.
DN | Dimensions(mm) | |||||||
Inch | mm | L | D | D1 | D2 | C | T | n-φL |
2" | 50 | 120 | 165 | 125 | 99 | 19 | 3 | 4-Ø19 |
2.5" | 65 | 135 | 185 | 145 | 118 | 19 | 3 | 4-Ø19 |
3" | 80 | 155 | 200 | 160 | 132 | 19 | 3 | 8-Ø19 |
4" | 100 | 165 | 220 | 180 | 156 | 19 | 3 | 8-Ø19 |
5" | 125 | 190 | 250 | 210 | 184 | 19 | 3 | 8-Ø19 |
6" | 150 | 210 | 285 | 240 | 211 | 19 | 3 | 8-Ø23 |
8" | 200 | 260 | 340 | 295 | 266 | 20 | 3 | 12-Ø23 |
10" | 250 | 285 | 405 | 355 | 319 | 22 | 3 | 12-Ø28 |
Specification | 1/4_,AL | 3/8" AL | ||
Pilot ratio | 1:5.5 | |||
Max flow | (L/min ) | 20 | 35 | |
Max pressure | (Bar) | 350 | ||
Cracking pressure | (Bar) | 4 | 3 | |
USE AND OPERATION: Pilot check valves are used to block the cylinder in both directions. Flow is free in one direction and blocked in the reverse direction until pilot pressure is applied The feature of this valve is the side positioned ports. APPLICATIONS: Connect V1 and V2 to the pressure flow and C1 and C2 to the actuator. |
Model | V1/V2/C1/C2 | L | L1 | L2 | L3 | H | S |
HYVBPDE 1/4"AL | G 1/4" | 64 | 113 | 34 | 13 | 40 | 30 |
HYVBPDE 3/8"AL | G 3/8" | 80 | 128 | 38 | 16 | 45 | 30 |
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All these accessories are completely interchangeable with original, high quality and low price.
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Exact time is determined by factory schedule.
Application:
Wafer type butterfly check valve adopts an advanced foreign structure design and is an energy-saving product conforming to the world standard. It is good at the check performance, safe, reliable, small in the flowing resistance and mainly suitable for petroleum, chemical, food, pharmacy. light & textile, paper-making, water supply and drainage, refinery and energy etc. systems, used as an one-way valve.
Main parts material
Performance Specification
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