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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.

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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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1059 items

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  1. Hansen HCK1w/0001, 3/4 (20MM)Piston Check Valve WLED In-Line 3/4Socket Weld Connection Hansen HCK1w/0001, 3/4 (20MM)Piston Check Valve WLED In-Line 3/4Socket Weld Connection
    Hansen HCK1w/0001, 3/4 (20MM)Piston Check Valve WLED In-Line 3/4Socket Weld Connection
    Web Price $653.40 List Price $979.00 List Price $979.00
  2. Hansen HCK1w/2021, 1 (25mm)Piston Check Valve Weld In-line 1 Socket Weld Connection Hansen HCK1w/2021, 1 (25mm)Piston Check Valve Weld In-line 1 Socket Weld Connection
    Hansen HCK1w/2021, 1 (25mm)Piston Check Valve Weld In-line 1 Socket Weld Connection
    Web Price $710.88 List Price $1,071.00 List Price $1,071.00
  3. Hansen HCK1w/2031, 1 Hansen HCK1w/2031, 1
    Hansen HCK1w/2031, 1" (25mm)Piston Check Valve Weld In-line 1-1/4" Socket Weld Connection
    Web Price $710.88 List Price $1,071.00 List Price $1,071.00
  4. Hansen HCK1w/3031, 1-1/4 (32mm)Piston Check Weld In-line 1-1/4Socket Weld Connection. Hansen HCK1w/3031, 1-1/4 (32mm)Piston Check Weld In-line 1-1/4Socket Weld Connection.
    Hansen HCK1w/3031, 1-1/4 (32mm)Piston Check Weld In-line 1-1/4Socket Weld Connection.
    Web Price $941.83 List Price $1,451.00 List Price $1,451.00
  5. Hansen HCK1w/4041, 1-1/2 (40MM)Piston Check Weld In-line 1-1/2 Socket Weld Connection Hansen HCK1w/4041, 1-1/2 (40MM)Piston Check Weld In-line 1-1/2 Socket Weld Connection
    Hansen HCK1w/4041, 1-1/2 (40MM)Piston Check Weld In-line 1-1/2 Socket Weld Connection
    Web Price $1,131.20 List Price $1,820.00 List Price $1,820.00
  6. Hansen HCK1w/5, 5 Hansen HCK1w/5, 5
    Hansen HCK1w/5, 5" (125mm) Piston Check Valve Butt Weld End
    Web Price $4,867.26 List Price $7,831.00 List Price $7,831.00
  7. Hansen HCK1w/5051, 2 (50MM) Piston Check, Weld-in Line, 2 Socket Weld Connection Hansen HCK1w/5051, 2 (50MM) Piston Check, Weld-in Line, 2 Socket Weld Connection
    Hansen HCK1w/5051, 2 (50MM) Piston Check, Weld-in Line, 2 Socket Weld Connection
    Web Price $1,231.89 List Price $1,982.00 List Price $1,982.00
  8. Hansen HCK1w/5E, 5 Hansen HCK1w/5E, 5
    Hansen HCK1w/5E, 5" (125mm)Piston Check. Valve, Butt Weld, CE-CAT III, MOD H, EF102
    Add to Quote to request pricing
  9. Hansen HCK1w/6061, 2-1/2 (65mm)Piston Check Valve, WELD IN 2-1/2 Socket Weld Hansen HCK1w/6061, 2-1/2 (65mm)Piston Check Valve, WELD IN 2-1/2 Socket Weld
    Hansen HCK1w/6061, 2-1/2 (65mm)Piston Check Valve, WELD IN 2-1/2 Socket Weld
    Web Price $1,588.03 List Price $2,555.00 List Price $2,555.00
  10. Hansen HCK1w/6E, 6 Hansen HCK1w/6E, 6
    Hansen HCK1w/6E, 6" (150mm)Piston Check Valve, Butt Weld, CE-CATIII, MOD H, EF102
    Add to Quote to request pricing
  11. Hansen HCK1w/7072, 3 (80MM) HCK1W Weld In-line 3 Butt Weld. Hansen HCK1w/7072, 3 (80MM) HCK1W Weld In-line 3 Butt Weld.
    Hansen HCK1w/7072, 3 (80MM) HCK1W Weld In-line 3 Butt Weld.
    Web Price $2,179.74 List Price $3,507.00 List Price $3,507.00
  12. Hansen HCK1w/8082, 4 (100mm)Piston Check Valve Weld In-line 4 Butt Weld Hansen HCK1w/8082, 4 (100mm)Piston Check Valve Weld In-line 4 Butt Weld
    Hansen HCK1w/8082, 4 (100mm)Piston Check Valve Weld In-line 4 Butt Weld
    Web Price $3,225.78 List Price $5,190.00 List Price $5,190.00
  13. Hansen HCK4-0LR, 3 (80MM)GRAVITY Drain CK.Valve.CE-CAT.II, MOD.H, EF101 Hansen HCK4-0LR, 3 (80MM)GRAVITY Drain CK.Valve.CE-CAT.II, MOD.H, EF101
    Hansen HCK4-0LR, 3 (80MM)GRAVITY Drain CK.Valve.CE-CAT.II, MOD.H, EF101
    Web Price $833.72 List Price $1,271.00 List Price $1,271.00
  14. Hansen HCK4-1, 4 (100MM)FLG.In-Line Check Valve CE-CAT.II, MOD.H, EF101 Hansen HCK4-1, 4 (100MM)FLG.In-Line Check Valve CE-CAT.II, MOD.H, EF101
    Hansen HCK4-1, 4 (100MM)FLG.In-Line Check Valve CE-CAT.II, MOD.H, EF101
    Web Price $1,286.58 List Price $2,070.00 List Price $2,070.00
  15. Hansen HCK4-1LR, 4 (100MM)Gravity Drain CK.Valve.CE.CAT.II, MOD.H, EF101 Hansen HCK4-1LR, 4 (100MM)Gravity Drain CK.Valve.CE.CAT.II, MOD.H, EF101
    Hansen HCK4-1LR, 4 (100MM)Gravity Drain CK.Valve.CE.CAT.II, MOD.H, EF101
    Web Price $1,286.58 List Price $2,070.00 List Price $2,070.00
  16. Hansen HCK4-2-10, 5/8 Flanged In-Line Check Valve With 10 PSIG Spring Hansen HCK4-2-10, 5/8 Flanged In-Line Check Valve With 10 PSIG Spring
    Hansen HCK4-2-10, 5/8 Flanged In-Line Check Valve With 10 PSIG Spring
    Web Price $149.48 List Price $222.00 List Price $222.00
  17. Hansen HCK4-2-18, 5/8 Hansen HCK4-2-18, 5/8
    Hansen HCK4-2-18, 5/8" Flanged In Line Check Valve with 18 psid Spring
    Web Price $149.48 List Price $222.00 List Price $222.00
  18. Hansen HCK4-2-30, 5/8 Flanged In-Line Check Valve 30 PSID Hansen HCK4-2-30, 5/8 Flanged In-Line Check Valve 30 PSID
    Hansen HCK4-2-30, 5/8 Flanged In-Line Check Valve 30 PSID
    Web Price $149.48 List Price $222.00 List Price $222.00
  19. Hansen HFC14N, Flow Controller, NH3, 14 GPM, 3/4 Hansen HFC14N, Flow Controller, NH3, 14 GPM, 3/4
    Hansen HFC14N, Flow Controller, NH3, 14 GPM, 3/4" Socket Weld Flange
    Web Price $1,097.51 List Price $1,308.00 List Price $1,308.00
  20. Hansen HKC051/062, #050 Flange, 5/8(16 mm) ODS Kit Hansen HKC051/062, #050 Flange, 5/8(16 mm) ODS Kit
    Hansen HKC051/062, #050 Flange, 5/8(16 mm) ODS Kit
    Web Price $92.92 List Price $138.00 List Price $138.00
  21. Hansen HKC101/087, #100 Flange, 7/8(22 mm) ODS Kit Hansen HKC101/087, #100 Flange, 7/8(22 mm) ODS Kit
    Hansen HKC101/087, #100 Flange, 7/8(22 mm) ODS Kit
    Web Price $113.12 List Price $168.00 List Price $168.00
  22. Hansen HKC101/112, #100 Flange, 1-1/8(28 mm) ODS Kit Hansen HKC101/112, #100 Flange, 1-1/8(28 mm) ODS Kit
    Hansen HKC101/112, #100 Flange, 1-1/8(28 mm) ODS Kit
    Web Price $113.12 List Price $168.00 List Price $168.00
  23. Hansen HKC101/137, #100 Flange, 1-3/8(35 MM) ODS Kit Hansen HKC101/137, #100 Flange, 1-3/8(35 MM) ODS Kit
    Hansen HKC101/137, #100 Flange, 1-3/8(35 MM) ODS Kit
    Web Price $113.12 List Price $168.00 List Price $168.00
  24. Hansen HKC200/162, #200 Flange, 1-5/8 Hansen HKC200/162, #200 Flange, 1-5/8
    Hansen HKC200/162, #200 Flange, 1-5/8" ODS Kit
    Web Price $161.60 List Price $240.00 List Price $240.00
  25. Hansen HKC200/212, #200 Flange, 2-1/8(54 MM) ODS Kit Hansen HKC200/212, #200 Flange, 2-1/8(54 MM) ODS Kit
    Hansen HKC200/212, #200 Flange, 2-1/8(54 MM) ODS Kit
    Web Price $161.60 List Price $240.00 List Price $240.00
  26. Hansen HKC200M042, #200 Flange, 42 mm ODS Kit Hansen HKC200M042, #200 Flange, 42 mm ODS Kit
    Hansen HKC200M042, #200 Flange, 42 mm ODS Kit
    Add to Quote to request pricing
  27. Hansen HKC250/262, #250 Flange 2-5/8(65 MM)ODS Kit Hansen HKC250/262, #250 Flange 2-5/8(65 MM)ODS Kit
    Hansen HKC250/262, #250 Flange 2-5/8(65 MM)ODS Kit
    Web Price $267.32 List Price $397.00 List Price $397.00
  28. Hansen HKC300/312, #300 Flange, 3-1/8 ODS Kit Hansen HKC300/312, #300 Flange, 3-1/8 ODS Kit
    Hansen HKC300/312, #300 Flange, 3-1/8 ODS Kit
    Web Price $336.67 List Price $500.00 List Price $500.00
  29. Hansen HKC400/412, #400 Flange, 4-1/8 ODS Kit Hansen HKC400/412, #400 Flange, 4-1/8 ODS Kit
    Hansen HKC400/412, #400 Flange, 4-1/8 ODS Kit
    Web Price $513.75 List Price $763.00 List Price $763.00
  30. Hansen HKN050/037, #050 Flange, 3/8 Weld Neck Kit Hansen HKN050/037, #050 Flange, 3/8 Weld Neck Kit
    Hansen HKN050/037, #050 Flange, 3/8 Weld Neck Kit
    Web Price $92.92 List Price $138.00 List Price $138.00
  31. Hansen HKN050/050, #050 Flange, 1/2 Weld Neck Kit Hansen HKN050/050, #050 Flange, 1/2 Weld Neck Kit
    Hansen HKN050/050, #050 Flange, 1/2 Weld Neck Kit
    Web Price $92.92 List Price $138.00 List Price $138.00
  32. Hansen HKN050/075, #050 Flange, 3/4 Weld Neck Kit Hansen HKN050/075, #050 Flange, 3/4 Weld Neck Kit
    Hansen HKN050/075, #050 Flange, 3/4 Weld Neck Kit
    Web Price $92.92 List Price $138.00 List Price $138.00
  33. Hansen HKN100/075, #100 Flange, 3/4 Weld Neck Kit Hansen HKN100/075, #100 Flange, 3/4 Weld Neck Kit
    Hansen HKN100/075, #100 Flange, 3/4 Weld Neck Kit
    Web Price $113.12 List Price $168.00 List Price $168.00
  34. Hansen HKN100/100, #100 Flange, 1 Weld Neck Kit Hansen HKN100/100, #100 Flange, 1 Weld Neck Kit
    Hansen HKN100/100, #100 Flange, 1 Weld Neck Kit
    Web Price $113.12 List Price $168.00 List Price $168.00
  35. Hansen HKN100/125, #100 Flange, 1-1/4 Weld Neck Kit Hansen HKN100/125, #100 Flange, 1-1/4 Weld Neck Kit
    Hansen HKN100/125, #100 Flange, 1-1/4 Weld Neck Kit
    Web Price $113.12 List Price $168.00 List Price $168.00
  36. Hansen HKN100/150, #100 Flange, 1-1/2 Weld Neck Kit Hansen HKN100/150, #100 Flange, 1-1/2 Weld Neck Kit
    Hansen HKN100/150, #100 Flange, 1-1/2 Weld Neck Kit
    Web Price $324.55 List Price $482.00 List Price $482.00
  37. Hansen HKN200/150, #200 Flange, 1-1/2 Weld Neck Kit Hansen HKN200/150, #200 Flange, 1-1/2 Weld Neck Kit
    Hansen HKN200/150, #200 Flange, 1-1/2 Weld Neck Kit
    Web Price $161.60 List Price $240.00 List Price $240.00
  38. Hansen HKN200/200, #200 Flange, 2 Weld Neck Kit Hansen HKN200/200, #200 Flange, 2 Weld Neck Kit
    Hansen HKN200/200, #200 Flange, 2 Weld Neck Kit
    Web Price $161.60 List Price $240.00 List Price $240.00
  39. Hansen HKN250/250, #250 Flange, 2-1/2 Weld Neck Kit Hansen HKN250/250, #250 Flange, 2-1/2 Weld Neck Kit
    Hansen HKN250/250, #250 Flange, 2-1/2 Weld Neck Kit
    Web Price $267.32 List Price $397.00 List Price $397.00
  40. Hansen HKN250/300, #250 Flange, 3 Hansen HKN250/300, #250 Flange, 3
    Hansen HKN250/300, #250 Flange, 3" Weld Neck Kit
    Web Price $267.32 List Price $397.00 List Price $397.00
  41. Hansen HKN300/300, #300 Flange, 3 Weld Neck Kit Hansen HKN300/300, #300 Flange, 3 Weld Neck Kit
    Hansen HKN300/300, #300 Flange, 3 Weld Neck Kit
    Web Price $336.67 List Price $500.00 List Price $500.00
  42. Hansen HKN400/400, #400 Flange, 4 Weld Neck Kit Hansen HKN400/400, #400 Flange, 4 Weld Neck Kit
    Hansen HKN400/400, #400 Flange, 4 Weld Neck Kit
    Web Price $513.75 List Price $763.00 List Price $763.00
  43. Hansen HKS050/025, #050 Flange, 1/4 Socket Weld Kit Hansen HKS050/025, #050 Flange, 1/4 Socket Weld Kit
    SHIPS TODAY
    Hansen HKS050/025, #050 Flange, 1/4 Socket Weld Kit
    Web Price $67.28 List Price $97.00 List Price $97.00
  44. Hansen HKS050/037, #050 Flange, 3/8 Socket Weld Kit Hansen HKS050/037, #050 Flange, 3/8 Socket Weld Kit
    Hansen HKS050/037, #050 Flange, 3/8 Socket Weld Kit
    Web Price $65.32 List Price $97.00 List Price $97.00
  45. Hansen HKS050/050-ACT, #050 Flange, 1/2 Hansen HKS050/050-ACT, #050 Flange, 1/2
    Hansen HKS050/050-ACT, #050 Flange, 1/2" SW KIT, ACT
    Add to Quote to request pricing
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  1. In Stock, Ships Today 39items
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  1. Apollo 1item
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  11. Parker - Refrigerating Specialties (RS) 480items
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  1. New In Box 1item
Category
  1. Check Valves 856items
  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 16items
  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" 4items
  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 2items
  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 31items
  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 23items
  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 31items
  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 2items
  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