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Products > Large Industrial Valves > API Lift Check Valves

USE:

    Extraction, transporation and distribution systems in: water, steam, gas and oil industry.

SCHEMATICS:

SERVICE CONDITIONS:

    Ambient temperature: from -35ºC to +40ºC (-22ºF to +104ºF)
    Service temperature: from -46ºC to +255ºC (-50ºF to +437ºF)

TECHNICAL CHARACTERISTICS:

    Design standard: BS 1873
    End-to-end dimensions: ASME B16.10
    Connection flanges: ASME B16.5
    Weld ends: ASME B16.25 or ASME B31.1
    Temperature pressure rating: ASME B16.34
    Testing: API 598
    Operation: spring activation

MATERIALS

No. Name of Part ASTM SPECIFICATION
Standard Low Temperature Service
-20°F 437°F  -29°C 225°C -50°F 437°F  -46°C 225°C
1 Body A216-WCB A352-LCB
2 Disc Seat Forged A105 A350 LF2
2 Casting A216-WCB A352-LCB
3 Spring Carbon Steel Stainless Steel
4 Bonnet A216-WCB A352-LCB
5 Bonnet Studs A193-B7 A320-L7M
6 Bonnet Nuts A194-2H A194-4
7a Bonnet Gasket Plane gasket – graphite with metal filler class 150
7b Spiral wound gasket – stainless steel with graphite filler
7c Ring-Joint gasket – carbon steel or stainless steel, as required
8 Threaded Plug Gasket Cu
9 Threaded Plug Carbon Steel

TRIM Number Nominal trIM Material Type Seat Surface
Hardness [HB]
1 F6 13 Cr 250 min
300 min
2 304 18 Cr – 8 Ni Manufacturer’s Standard
5 HF Co – Cr A 350 min
5A Ni – Cr
8 F6/HF 13 Cr 250 min
Co – Cr A 350 min
8A 13 Cr 250 min
Ni – Cr 350 min
10 316 18 Cr – 8 Ni -Mo Manufacturer’s Standard
12 316/HF 18 Cr – 8 Ni -Mo Manufacturer’s Standard
Co – Cr A 350 min
12A 18 Cr – 8 Ni -Mo Manufacturer’s Standard
Ni -Cr 350 min

API LIFT CHECK VALVE CLASS 150

Overall NPS inch 1 1/2" 2" 2 1/2" 3" 4" 5" 6" 8" 10" 12"
DN mm 40 50 65 80 100 125 150 200 250 300
RF inch 6 1/2" 8" 8 1/2" 9 1/2" 11 1/2" 14" 16" 19 1/2" 24 1/2" 27 1/2"
BW mm 165 203 216 241 292 356 406 495 622 699
RJ inch 7" 8 1/2" 9" 10" 12" 14 1/2" 16 1/2" 20" 25" 28"
mm 178 216 229 254 305 368 419 508 635 711
H inch 4 3/4" 4 7/8" 6" 6 1/4" 6 3/4" 7 5/8" 8 5/8" 10 7/8" 12 3/4" 14 3/8"
mm 121 124 152 159 172 194 219 276 324 365
Net weight RF lbs. 26 37 55 62 95 121 165 309 441 617
kg 12 17 25 28 43 55 75 140 200 280
BW lbs. 20 31 46 53 86 110 152 295 419 584
kg 9 14 21 24 39 50 69 134 190 265

API LIFT CHECK VALVE CLASS 300

Overall NPS inch 1 1/2" 2" 2 1/2" 3" 4" 5" 6" 8" 10" 12"
DN mm 40 50 65 80 100 125 150 200 250 300
RF inch 9" 10 1/2" 11 1/2" 12 1/2" 14" 15 3/4" 17 1/2" 22" 24 1/2" 28"
BW mm 228 267 292 318 396 400 444 559 622 711
RJ inch 9 1/2" 11 1/8" 12 1/8" 13 1/8" 14 5/8" 16 3/4" 18 1/8" 22 5/8" 25 1/8" 28 5/8"
mm 241 283 308 333 371 416 460 575 638 727
H inch 4 3/4" 4 7/8" 6" 6 1/4" 6 3/4" 7 5/8" 8 5/8" 10 7/8" 12 3/4" 14 3/8"
mm 121 124 152 159 172 194 219 276 324 365
Net weight RF lbs. 26 37 62 79 101 148 194 384 562 833
kg 12 17 28 36 46 67 88 174 255 378
BW lbs. 20 31 55 68 90 137 183 346 463 562
kg 9 14 25 31 41 62 83 157 210 255

API LIFT CHECK VALVE CLASS 400

Overall NPS inch 1 1/2" 2" 2 1/2" 3" 4" 5" 6" 8" 10" 12"
DN mm 40 50 65 80 100 125 150 200 250 300
RF inch 9 1/2" 11 1/2" 13" 14" 16" 18" 19 1/2" 23 1/2" 26 1/2" 30"
BW mm 241 292 330 356 406 457 495 597 673 762
RJ inch 9 5/8" 11 5/8" 13 1/8" 14 1/8" 16 5/8" 18 5/8" 19 5/8" 23 5/8" 26 5/8" 30 1/2"
mm 245 299 333 359 410 460 498 600 673 765
H inch 5 3/8" 5 1/2" 6 1/8" 6 1/2" 7 1/2" 9 5/8" 10 1/2" 12 3/4" 13 3/4" 15 3/4"
mm 137 140 155 165 191 245 267 311 350 400
Net weight RF lbs. 66 93 132 165 231 271 419 838 992 1323
kg 30 42 60 75 105 123 190 380 450 600
BW lbs. 57 84 123 152 216 254 401 683 970 1290
kg 26 38 56 69 98 115 182 310 440 585