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  • ALC® Wafer Check Valves
  • Wafer Check Valves - 2
The ALC® is an in-line, spring assisted, single guided "wafer" check valve designed to prevent "water hammer" and "reverse" flow. The lightweight compact design fits between mating flanges and meets API 594 Face-to-Face dimensions. The ALC® is an easy to maintain check valve for applications involving liquids, gases or steam. Tapped holes are provided in the body for lifting lugs to assist with installation. (10" & larger only)

All temperature ratings are for standard valves.
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ASME CLASS

Size (in)

Size (mm)

ENDS

Cv

Prod. #

ASME CLASS

Size

Cracking Pressure CP

Body

ENDS

Cv

522P1B4A5 N/A 150 300 N/A 10.0 inDN 250 N/A 0.034 bar0.5 psig N/A A216 WCB N/A Wafer (RF) N/A 1875
525P1B4A5 N/A 150 300 N/A 10.0 inDN 250 N/A 0.034 bar0.5 psig N/A A351 CF8M N/A Wafer (RF) N/A 1875
522R1B4A5 N/A 150 300 N/A 12.0 inDN 300 N/A 0.034 bar0.5 psig N/A A216 WCB N/A Wafer (RF) N/A 2525
525R1B4A5 N/A 150 300 N/A 12.0 inDN 300 N/A 0.034 bar0.5 psig N/A A351 CF8M N/A Wafer (RF) N/A 2525
522S1A4A5 N/A 150 N/A 14.0 inDN 350 N/A 0.034 bar0.5 psig N/A A216 WCB N/A Wafer (RF) N/A 2950
522S1B4A5 N/A 300 N/A 14.0 inDN 350 N/A 0.034 bar0.5 psig N/A A216 WCB N/A Wafer (RF) N/A 3275
525S1A4A5 N/A 150 N/A 14.0 inDN 350 N/A 0.034 bar0.5 psig N/A A351 CF8M N/A Wafer (RF) N/A 2950
525S1B4A5 N/A 300 N/A 14.0 inDN 350 N/A 0.034 bar0.5 psig N/A A351 CF8M N/A Wafer (RF) N/A 3275
522T1A4A5 N/A 150 N/A 16.0 inDN 400 N/A 0.034 bar0.5 psig N/A A216 WCB N/A Wafer (RF) N/A 3330
522T1B4A5 N/A 300 N/A 16.0 inDN 400 N/A 0.034 bar0.5 psig N/A A216 WCB N/A Wafer (RF) N/A 4100
525T1A4A5 N/A 150 N/A 16.0 inDN 400 N/A 0.034 bar0.5 psig N/A A351 CF8M N/A Wafer (RF) N/A 3330
525T1B4A5 N/A 300 N/A 16.0 inDN 400 N/A 0.034 bar0.5 psig N/A A351 CF8M N/A Wafer (RF) N/A 4100
522U1A4A5 N/A 150 N/A 18.0 inDN 450 N/A 0.034 bar0.5 psig N/A A216 WCB N/A Wafer (RF) N/A 3475
522U1B4A5 N/A 300 N/A 18.0 inDN 450 N/A 0.034 bar0.5 psig N/A A216 WCB N/A Wafer (RF) N/A 5040
525U1A4A5 N/A 150 N/A 18.0 inDN 450 N/A 0.034 bar0.5 psig N/A A351 CF8M N/A Wafer (RF) N/A 3475
525U1B4A5 N/A 300 N/A 18.0 inDN 450 N/A 0.034 bar0.5 psig N/A A351 CF8M N/A Wafer (RF) N/A 5040
522H1B4A5 N/A 150 300 N/A 2.00 inDN 50 N/A 0.034 bar0.5 psig N/A A216 WCB N/A Wafer (RF) N/A 120
525H1B4A5 N/A 150 300 N/A 2.00 inDN 50 N/A 0.034 bar0.5 psig N/A A351 CF8M N/A Wafer (RF) N/A 120
525H1B4D5 N/A 150 300 N/A 2.00 inDN 50 N/A 0.034 bar0.5 psig N/A A351 CF8M N/A Wafer (RF) N/A
522H1B4D5 N/A 150 300 N/A 2.00 inDN 50 N/A 0.034 bar0.5 psig N/A A216 WCB N/A Wafer (RF) N/A 1310
522J1B4A5 N/A 150 300 N/A 2.50 inDN 65 N/A 0.034 bar0.5 psig N/A A216 WCB N/A Wafer (RF) N/A 205
525J1B4A5 N/A 150 300 N/A 2.50 inDN 65 N/A 0.034 bar0.5 psig N/A A351 CF8M N/A Wafer (RF) N/A 205
525J1B4D5 N/A 150 300 N/A 2.50 inDN 65 N/A 0.034 bar0.5 psig N/A A351 CF8M N/A Wafer (RF) N/A
522J1B4D5 N/A 150 300 N/A 2.50 inDN 65 N/A 0.034 bar0.5 psig N/A A216 WCB N/A Wafer (RF) N/A 1310
522W1A4A5 N/A 150 N/A 20.0 inDN 500 N/A 0.034 bar0.5 psig N/A A216 WCB N/A Wafer (RF) N/A 3750
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