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Check Valves

Check Valves

Keep Supply is your trusted source for check valves. Check valves are responsible for ensuring proper flow within a fluid system. We carrier check valves from Danfoss, Refrigeration Specialties, Hansen and more. For all your parts needs, we are here to help.

Categories
Check Valve Flanges & Gaskets
Check Valve Flanges & Gaskets
Check Valve Piston & Seat Kits
Check Valve Piston & Seat Kits
Check Valve Replacement Parts
Check Valve Replacement Parts
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  1. Parker - Refrigerating Specialties: CKSA0WP0NSN, 4 CK1 W/.109 PISTON 4WN Parker - Refrigerating Specialties: CKSA0WP0NSN, 4 CK1 W/.109 PISTON 4WN
    Parker - Refrigerating Specialties: CKSA0WP0NSN, 4 CK1 W/.109 PISTON 4WN
    List Price $4,936.00 List Price $4,936.00 Web Price $2,946.87
  2. Parker - Refrigerating Specialties: CKSA0X00NPN, 4 CK1 DN W/.109 PISTON Parker - Refrigerating Specialties: CKSA0X00NPN, 4 CK1 DN W/.109 PISTON
    Parker - Refrigerating Specialties: CKSA0X00NPN, 4 CK1 DN W/.109 PISTON
    List Price $4,086.00 List Price $4,086.00 Web Price $2,439.40
  3. Parker - Refrigerating Specialties: CKSA2SP2NSN, 6 CK1 W/.109 PISTON 6SW Parker - Refrigerating Specialties: CKSA2SP2NSN, 6 CK1 W/.109 PISTON 6SW
    Parker - Refrigerating Specialties: CKSA2SP2NSN, 6 CK1 W/.109 PISTON 6SW
    List Price $15,014.00 List Price $15,014.00 Web Price $8,963.58
  4. PEVC3B32 Parker - Refrigerating Specialties 3/4 PEV 70% 3/4BW W/ACTUATOR PEVC3B32 Parker - Refrigerating Specialties 3/4 PEV 70% 3/4BW W/ACTUATOR
    PEVC3B32 Parker - Refrigerating Specialties 3/4 PEV 70% 3/4BW W/ACTUATOR
    List Price $6,723.00 List Price $6,723.00 Web Price $4,013.73
  5. PEVC3B41 Parker - Refrigerating Specialties 3/4 PEV 1BW W/ACTUATOROR PEVC3B41 Parker - Refrigerating Specialties 3/4 PEV 1BW W/ACTUATOROR
    PEVC3B41 Parker - Refrigerating Specialties 3/4 PEV 1BW W/ACTUATOROR
    List Price $6,723.00 List Price $6,723.00 Web Price $4,013.73
  6. PEVC3B42 Parker - Refrigerating Specialties 3/4 PEV 70% 1BW W/ACTUATOR PEVC3B42 Parker - Refrigerating Specialties 3/4 PEV 70% 1BW W/ACTUATOR
    PEVC3B42 Parker - Refrigerating Specialties 3/4 PEV 70% 1BW W/ACTUATOR
    List Price $6,723.00 List Price $6,723.00 Web Price $4,013.73
  7. PEVC3D31 Parker - Refrigerating Specialties 3/4 PEV 20BW W/ACTUATORR PEVC3D31 Parker - Refrigerating Specialties 3/4 PEV 20BW W/ACTUATORR
    PEVC3D31 Parker - Refrigerating Specialties 3/4 PEV 20BW W/ACTUATORR
    List Price $6,723.00 List Price $6,723.00 Web Price $4,013.73
  8. PEVC3S32 Parker - Refrigerating Specialties 3/4 PEV 70% 3/4SW W/ACTUATOR PEVC3S32 Parker - Refrigerating Specialties 3/4 PEV 70% 3/4SW W/ACTUATOR
    PEVC3S32 Parker - Refrigerating Specialties 3/4 PEV 70% 3/4SW W/ACTUATOR
    List Price $6,723.00 List Price $6,723.00 Web Price $4,013.73
  9. PEVC5B51 Parker - Refrigerating Specialties 1-1/4 PEV 1-1/4BW W/ACTUATOR PEVC5B51 Parker - Refrigerating Specialties 1-1/4 PEV 1-1/4BW W/ACTUATOR
    PEVC5B51 Parker - Refrigerating Specialties 1-1/4 PEV 1-1/4BW W/ACTUATOR
    List Price $7,564.00 List Price $7,564.00 Web Price $4,515.82
  10. PEVC6D61 Parker - Refrigerating Specialties 1-1/2 PEV 40BW W/ACTUATOR PEVC6D61 Parker - Refrigerating Specialties 1-1/2 PEV 40BW W/ACTUATOR
    PEVC6D61 Parker - Refrigerating Specialties 1-1/2 PEV 40BW W/ACTUATOR
    List Price $8,266.00 List Price $8,266.00 Web Price $4,934.93
  11. PEVC6S81 Parker - Refrigerating Specialties 1-1/2 PEV 2SW W/ACTUATOR PEVC6S81 Parker - Refrigerating Specialties 1-1/2 PEV 2SW W/ACTUATOR
    PEVC6S81 Parker - Refrigerating Specialties 1-1/2 PEV 2SW W/ACTUATOR
    List Price $8,266.00 List Price $8,266.00 Web Price $4,934.93
  12. PEVC6S83 Parker - Refrigerating Specialties 1-1/2 PEV 2SW W/O ACTUATOR PEVC6S83 Parker - Refrigerating Specialties 1-1/2 PEV 2SW W/O ACTUATOR
    PEVC6S83 Parker - Refrigerating Specialties 1-1/2 PEV 2SW W/O ACTUATOR
    List Price $3,948.00 List Price $3,948.00 Web Price $2,357.01
  13. Repair Kit, Check Valve Phillips - K700JR Repair Kit, Check Valve Phillips - K700JR
    Repair Kit, Check Valve Phillips - K700JR
    List Price $54.00 List Price $54.00 Web Price $45.00
  14. RS CK4A0SP0NPN, 4, CK4A16, DN, 4 Socket Weld RS CK4A0SP0NPN, 4, CK4A16, DN, 4 Socket Weld
    RS CK4A0SP0NPN, 4, CK4A16, DN, 4 Socket Weld
    List Price $2,900.00 List Price $2,900.00 Web Price $1,731.34
  15. S2OD-2X1-5/8 Henry Flange Union, 1-5/8" ODS Flange Union Kit,OD Solder Copper Connections - Sq. 4 Bolt Flange S2OD-2X1-5/8 Henry Flange Union, 1-5/8" ODS Flange Union Kit,OD Solder Copper Connections - Sq. 4 Bolt Flange
    S2OD-2X1-5/8 Henry Flange Union, 1-5/8" ODS Flange Union Kit,OD Solder Copper Connections - Sq. 4 Bolt Flange
    Web Price $404.37
  16. S2PT-1-1/4X1 Henry Flange Union, 1" FPT Flange Union Kit, Female Pipe Thread - Square 4 Bolt Flange S2PT-1-1/4X1 Henry Flange Union, 1" FPT Flange Union Kit, Female Pipe Thread - Square 4 Bolt Flange
    S2PT-1-1/4X1 Henry Flange Union, 1" FPT Flange Union Kit, Female Pipe Thread - Square 4 Bolt Flange
    Web Price $148.55
  17. S2SW-1-1/4F Henry Flange Union, 1-1/4" Socket Weld Female Flange, Socket Weld - Square 4 Bolt Flange S2SW-1-1/4F Henry Flange Union, 1-1/4" Socket Weld Female Flange, Socket Weld - Square 4 Bolt Flange
    S2SW-1-1/4F Henry Flange Union, 1-1/4" Socket Weld Female Flange, Socket Weld - Square 4 Bolt Flange
    Web Price $59.37
  18. S2SW-2X1-1/2F Henry Flange Union, 1-1/2" Socket Weld Female Flange, Socket Weld - Square 4 Bolt Flange S2SW-2X1-1/2F Henry Flange Union, 1-1/2" Socket Weld Female Flange, Socket Weld - Square 4 Bolt Flange
    S2SW-2X1-1/2F Henry Flange Union, 1-1/2" Socket Weld Female Flange, Socket Weld - Square 4 Bolt Flange
    List Price $88.76 List Price $88.76 Web Price $84.32
  19. Parker - Refrigerating Specialties: 301490, Spring - image 1 Parker - Refrigerating Specialties: 301490, Spring - image 1
    SPRG,CMP 1.094ID .093WR 9TR
    List Price $29.00 List Price $29.00 Web Price $22.23
  20. Hansen Default Image Hansen Default Image
    UK-ACT Hansen Flange Union Kits - ACT
    List Price $164.00 List Price $164.00 As low as $0.00
  21. Hansen Default Image Hansen Default Image
    SHIPS TODAY
    UK100-ACT Hansen #100 Flange Union Kit - ACT
    Add to Quote to request pricing
  22. Hansen Default Image Hansen Default Image
    SHIPS TODAY
    UK200-ACT Hansen #200 Flange Union Kit - ACT
    Add to Quote to request pricing
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Product Availability
  1. In Stock, Ships Today 39items
Brand
  1. Apollo 1item
  2. Champion Valves 27items
  3. Danfoss 101items
  4. Frick 75items
  5. Hansen 250items
  6. Henry 34items
  7. Ingersoll Rand 15items
  8. M&M Refrigeration 1item
  9. Parker 2items
  10. Phillips 52items
  11. Parker - Refrigerating Specialties (RS) 480items
  12. Temprite 1item
  13. Vilter 18items
Condition Type
  1. New In Box 1item
Category
  1. Check Valves 855items
  2. Check Valve Piston & Seat Kits 10items
  3. Check Valve Replacement Parts 1item
  4. Clearance / Liquidation 1item
  5. Flanges & Gaskets 140items
  6. Gas-Powered Valves 5items
  7. Quote Only 2items
  8. Solenoid Valve Flanges & Gaskets 15items
  9. Valve Parts 5items
  10. Valves 25items
Outlet Connection
  1. 1" 1item
  2. 1-1/4" 1item
  3. 1 1/2" 1item
Port Size
  1. 1/2" 21items
  2. 3/4" 64items
  3. 5/8" 8items
  4. 7/8" 2items
  5. 1" 54items
  6. 1-1/4" 77items
  7. 1-1/2" 26items
  8. 1-5/8" 37items
  9. 2" 86items
  10. 2-1/4" 3items
  11. 2-1/2" 78items
  12. 3" 74items
  13. 4" 63items
  14. 5" 23items
  15. 6" 20items
  16. 8" 2items
  17. 1-1/2" (marked with CE) 2items
  18. 2" (marked with CE) 1item
  19. 2-1/2" (marked with CE) 1item
Body Material
  1. ACT 4items
  2. Cast Steel (A-352 GR, LCB) 103items
  3. Ductile Iron (GGG-40.3) 43items
  4. Gray Iron 123items
  5. GGG-40.3 38items
  6. Stainless Steel 1item
Model
  1. MS-4 2items
  2. MS-6 2items
  3. MS-8 1item
  4. MS-10 2items
  5. MS-12 2items
  6. MS-14 2items
  7. MS-18 2items
  8. MS-22 2items
  9. MS-26 2items
  10. MS-34 2items
  11. MS-42 2items
  12. MS-50 2items
  13. SDR 9items
  14. NZW 17items
Connection Pipe Size
  1. 2" 1item
  2. 1-1/4" (marked with CE) 1item
Connection
  1. N/A 6items
  2. 1/2" ODS 1item
  3. 1-1/8" ODS 2items
  4. 1-1/2" FPT Female Flange 1item
  5. 1-1/2" FPT Male Flange 1item
  6. 1-1/2" SW Female Flange 2items
  7. 1-3/8" ODS 2items
  8. 1-5/8" ODS 2items
  9. 2-1/8" ODS 2items
  10. 2-5/8" ODS 1item
  11. 3/8" ODS 1item
  12. 5/8" ODS 1item
  13. 7/8" ODS 1item
  14. 1" FPT Female Flange 1item
  15. 1" FPT Flange Union Kit 2items
  16. 1" FPT Male Flange 1item
  17. 1" SW Female Flange 3items
  18. 1" SW Flange Union Kit 1item
  19. 1" SW Male Flange 1item
  20. 1/2" FPT Female Flange 1item
  21. 1/2" FPT Male Flange 1item
  22. 1/2" SW Female Flange 1item
  23. 1/2" SW Flange Union Kit 1item
  24. 1/2" SW Male Flange 1item
  25. 1-1/4" FPT Female Flange 1item
  26. 1-1/4" FPT Flange Union Kit 1item
  27. 1-1/4" SW Female Flange 2items
  28. 1-3/8" ODS Female Flange 1item
  29. 1-3/8" ODS Flange Union Kit 1item
  30. 1-3/8" ODS Male Flange 1item
  31. 1-5/8" ODS Female Flange 1item
  32. 1-5/8" ODS Flange Union Kit 2items
  33. 1-5/8" ODS Male Flange 1item
  34. 2" FPT Female Flange 1item
  35. 2" FPT Male Flange 1item
  36. 2" SW Female Flange 2items
  37. 2-1/2" SW Female Flange 1item
  38. 2-1/2" SW Flange Union Kit 2items
  39. 2-1/8" ODS Female Flange 1item
  40. 2-1/8" ODS Flange Union Kit 2items
  41. 2-1/8" ODS Male Flange 1item
  42. 2-5/8" ODS Female Flange 1item
  43. 2-5/8" ODS Flange Union Kit 1item
  44. 2-5/8" ODS Male Flange 1item
  45. 3/4" FPT Female Flange 2items
  46. 3/4" FPT Male Flange 1item
  47. 3/4" SW Female Flange 1item
  48. 3/4" SW Flange Union Kit 2items
  49. 3/4" SW Male Flange 1item
  50. 3-1/8" ODS Female Flange 1item
  51. 3-1/8" ODS Flange Union Kit 1item
  52. 3-1/8" ODS Male Flange 1item
  53. 4" SW Male Flange 1item
  54. 3/4" 4items
  55. 1" 2items
  56. 1-1/2" 1item
  57. 2-1/2" 2items
  58. 3-1/8" 4items
  59. 3-5/8" 2items
  60. 5" 2items
  61. 4-1/8" 4items
  62. 2-1/8" 2items
Valve Body Type
  1. Carbon Steel 17items
  2. Ductile Iron 9items
Flange Size
  1. No Flanges 30items
  2. 1/2" 8items
  3. 3/4" 17items
  4. 3/8" 1item
  5. 1" 10items
  6. 1-1/4" 10items
  7. 1-1/2" 12items
  8. 1-5/8" 1item
  9. 2" 12items
  10. 2-1/2" 2items
  11. 2-1/8" 1item
  12. 3" 7items
  13. 4" 4items
  14. 1" x 1-1/4" 1item
  15. 1-1/4" x 1" 1item
  16. 2" x 1-1/2" 1item
Port Size (MM)
  1. 15mm 18items
  2. 20mm 37items
  3. 25mm 37items
  4. 32mm 54items
  5. 40mm 35items
  6. 50mm 59items
  7. 65mm 58items
  8. 80mm 48items
  9. 100mm 37items
  10. 125mm 14items
  11. 150mm 15items
  12. 200mm 2items
Connection Style
  1. None 6items
  2. Socket-Weld 5items
  3. Weld Neck 2items
  4. Weld-End 2items
  5. ODS 2items
  6. Copper 7items
Flange Style
  1. N/A 22items
  2. No Flanges 1item
  3. With Flanges 1item
  4. Oval 10items
  5. Square 21items
Strainer Type
  1. Without Strainer 230items
  2. With Strainer 26items
  3. No Strainer 23items
Flange Connection
  1. N/A 30items
  2. FPT 14items
  3. Socket-Weld 34items
  4. Weld Neck 7items
  5. ODC 2items
  6. Socket-Weld x Socket-Weld 3items
  7. Socket Inlet x Socket Inlet 1item
Spring
  1. 705A-20L 3items
  2. 705A-30L 1item
  3. 705A-2L 1item
  4. 705A-60L 1item
  5. 705A-10L 1item
  6. 705A-110L 1item
  7. 705A-165L 1item
  8. 705B-30L 1item
  9. 705B-3L 2items
  10. 705B-10L 1item
  11. 705-10L 2items
  12. 705-20L 2items
  13. 705-35L 3items
  14. 705-1L 1item
  15. 705-5L 4items
  16. 705-90L 2items
  17. 705-50L 1item
  18. 705-60L 4items
  19. 705-70L 3items
  20. 705-130L 1item
  21. #5 1item
  22. #10 1item
  23. 316 Stainless Steel 26items
Inlet
  1. 1" 1item
  2. 1-1/2" 1item
  3. 1-1/4" 1item