GB Lift Check Valve
Application of Standards
① Design and manufacture of cast steel lift check valves comply with GB/T
12235 and GB/T12224, while those of forged steel lift check valves follow JB/T 7746.
③ Inspection and testing shall comply with GB/T 13927 and GB/T 26480.
④ Flange connections comply with the standards JB/T79, HG/T20592, and GB/T9113.
⑤ Welded end: GB/T12224
⑥ butt and socket welding end: JB/T 7746
⑦ Structure length: GB/T12221
⑧ Temperature and pressure rating: GB/T12224
Product specifications
① Main material: carbon steel, stainless steel, alloy steel
② Nominal diameter: DN15 to DN400
③ Pressure range: 1.0MPa~10.0MPa
④ Operating temperature: -29℃~+600℃
⑤ Drive mode: Automatic.
⑥ Application scope: It can be used in water supply, sewage, construction, food, electric power, medicine, metallurgy, light textile, energy and other horizontal fluid pipelines to prevent the medium from backflow.
Main Components Material
| Material | |||
| Order number | Part name | Stainless steel | Cast steel |
| 1 | Valve body | CF8 | WCB |
| 2 | Valve clack | 304 | 2Cr13 |
| 3 | Gland | PTFE | 304+ graphite |
| 4 | Bonnet | CF8 | WCB |
| 5 | Double- | A193 B8 | A193B7 |
| screw bolt | |||
| 6 | Nut | A1948 | A1942H |
Main size data PN1.6-4.0MPa
| Size | DN | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 |
| L/L1 | mm | 130 | 150 | 160 | 180 | 200 | 230 | 290 | 310 | 350 | 400 | 480 | 600 | 650 | 750 |
| H | mm | 77 | 77 | 80 | 85 | 95 | 105 | 120 | 130 | 140 | 155 | 180 | 215 | 260 | 315 |
PN6.4MPa
| Size | DN | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 |
| L/L1 | mm | 190 | 210 | 230 | 260 | 300 | 340 | 380 | 430 |
| H | mm | 110 | 125 | 152 | 168 | 170 | 188 | 205 | 230 |
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