Check Valves- Ck-1 | Product Series

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Check Valves- Ck-1

Check Valves- Ck-1

Where to Buy

The Type CK1 Check Valves prevent backward flow of fluid in refrigerant suction, hot gas or liquid lines.

Technical Specifications

  • Model Number: Please Configure Part for Model Number
  • Maximum Operating Pressure: 27.6 bar, 400 psig
  • Valve Type: CK1, CKS
  • Port Size: 20 to 150 mm, 3/4 to 6 inch
  • Connection Type: FPT, Socket Weld, No Flange, Weld Neck, ODS
  • Connection Size: None, 3/4 to 6 inch
  • Strainer Type: Without Strainer, With Strainer
  • Adapter Ring Included: No Adapter Ring or Male Adapter Ring
  • Valve Material: Standard Material, Meets Pressure Equipment Directive (PED)
  • Plating Type: No Plating
  • Piston Type: Standard, 0.109 Piston

Full Product Description

Parker’s CK1 check valves provide safe and effective backflow prevention for a variety of refrigeration applications. The gravity closing feature makes these valves ideal for systems that use a VFD or compressor unloading feature to reduce capacity as they can tolerate load fluctuations better than alternative check valve technologies. All CK1 check valves are flanged and have a manual opening stem for manual operation. The 20-32 mm (3/4 - 1-1/4”) port size valves have a PTFE seat; larger valves have a metal to metal seat. A minimum pressure difference of .03 bar (0.5 psi) is required to open the valve.

Markets:
• Industrial Refrigeration
• Commercial Refrigeration

Features and Benefits:
• Manual Opening Stem
• Low Pressure Drop
• Piston Type Gravity Closing
• Flanged
• Design Pressure (MRP): 27.6 bar (400 psig)
• Rugged; Heavy Duty

Applications:
• Compressor Discharge Lines
• Liquid Lines with temperatures as low as -30°C (-25°F)
• Suction Lines with temperatures as low as -30°C (-25°F)

Related Documents

Compliance, Certifications & Safety
Declaration of Conformity - CK-1 Gas Powered Stop Valves
Declaration of Conformity - CK-1 Gas Powered Stop Valves
Declaration of Conformity - Check-Valve CK-1.pdf
Literature and Reference Materials
Product Bulletin - CHECK VALVE Type CK1
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Products Connection Size Strainer Type Port Size (mm) Port Size (inch) Valve Type Connection Type Adapter Ring Valve Material Piston Type
CK120F20NSN 3/4" No Strainer 20mm 3?4” CK1 FPT No Adapter Ring Standard Valve Standard
CK120S20NSN 3/4" No Strainer 20mm 3?4” CK1 Socket Weld No Adapter Ring Standard Valve Standard
CK120S25NSN 1” No Strainer 20mm 3?4” CK1 Socket Weld No Adapter Ring Standard Valve Standard
CK120S32NSN 1-1?4” No Strainer 20mm 3?4” CK1 Socket Weld No Adapter Ring Standard Valve Standard
CK120S32YNSN 1-1?4” Strainer 20mm 3?4” CK1 Socket Weld No Adapter Ring Standard Valve Standard
CK120X00NPN None No Strainer 20mm 3?4” CK1 No Flange No Adapter Ring Meets Pressure Equipment Directive (PED) Standard
CK120X00NSN None No Strainer 20mm 3?4” CK1 No Flange No Adapter Ring Standard Valve Standard
CK125F25NSN 1” No Strainer 25mm 1” CK1 FPT No Adapter Ring Standard Valve Standard
CK125F32NSN 1-1?4” No Strainer 25mm 1” CK1 FPT No Adapter Ring Standard Valve Standard
CK125S25NNPN 1” No Strainer 25mm 1” CK1 Socket Weld No Adapter Ring Meets Pressure Equipment Directive (PED) Standard
CK132S38NPN 1-1?2” No Strainer 32mm 1-1?4” CK1 Socket Weld No Adapter Ring Meets Pressure Equipment Directive (PED) Standard
CK132S38NSN 1-1?2” No Strainer 32mm 1-1?4” CK1 Socket Weld No Adapter Ring Standard Valve Standard
CK132S38YMSN 1-1?2” Strainer 32mm 1-1?4” CK1 Socket Weld Male Adapter Ring Standard Valve Standard
CK132S38YNSN 1-1?2” Strainer 32mm 1-1?4” CK1 Socket Weld No Adapter Ring Standard Valve Standard
CK132W32NSN 1-1?4” No Strainer 32mm 1-1?4” CK1 Weld Neck No Adapter Ring Standard Valve Standard
CK132X00MSN None No Strainer 32mm 1-1?4” CK1 No Flange Male Adapter Ring Standard Valve Standard
CK132X00NPN None No Strainer 32mm 1-1?4” CK1 No Flange No Adapter Ring Meets Pressure Equipment Directive (PED) Standard
CK132X00NSN None No Strainer 32mm 1-1?4” CK1 No Flange No Adapter Ring Standard Valve Standard
CK140F38NSN 1-1?2” No Strainer 40mm 1-5?8” CK1 FPT No Adapter Ring Standard Valve Standard
CK140K17NSN 2-1?8” No Strainer 40mm 1-5?8” CK1 ODS No Adapter Ring Standard Valve Standard
CK140S38MSN 1-1?2” No Strainer 40mm 1-5?8” CK1 Socket Weld Male Adapter Ring Standard Valve Standard
CK140S38NPN 1-1?2” No Strainer 40mm 1-5?8” CK1 Socket Weld No Adapter Ring Meets Pressure Equipment Directive (PED) Standard
CK140S38NSN 1-1?2” No Strainer 40mm 1-5?8” CK1 Socket Weld No Adapter Ring Standard Valve Standard
CK140S38YNSN 1-1?2” Strainer 40mm 1-5?8” CK1 Socket Weld No Adapter Ring Standard Valve Standard
CK140S50NSN 2” No Strainer 40mm 1-5?8” CK1 Socket Weld No Adapter Ring Standard Valve Standard
CK140S50YNSN 2” Strainer 40mm 1-5?8” CK1 Socket Weld No Adapter Ring Standard Valve Standard
CK140W38NSN 1-1?2” No Strainer 40mm 1-5?8” CK1 Weld Neck No Adapter Ring Standard Valve Standard
CK140W50NSN 2” No Strainer 40mm 1-5?8” CK1 Weld Neck No Adapter Ring Standard Valve Standard
CK140X00NPN None No Strainer 40mm 1-5?8” CK1 No Flange No Adapter Ring Meets Pressure Equipment Directive (PED) Standard
CK140X00NSN None No Strainer 40mm 1-5?8” CK1 No Flange No Adapter Ring Standard Valve Standard
CK150K17NPN 2-1?8” No Strainer 50mm 2” CK1 ODS No Adapter Ring Meets Pressure Equipment Directive (PED) Standard
CK150K17NSN 2-1?8” No Strainer 50mm 2” CK1 ODS No Adapter Ring Standard Valve Standard
CK150K21NSN 2-5/8" No Strainer 50mm 2” CK1 ODS No Adapter Ring Standard Valve Standard
CK150S38NSN 1-1?2” No Strainer 50mm 2” CK1 Socket Weld No Adapter Ring Standard Valve Standard
CK150S50MSN 2” No Strainer 50mm 2” CK1 Socket Weld Male Adapter Ring Standard Valve Standard
CK150S50NPN 2” No Strainer 50mm 2” CK1 Socket Weld No Adapter Ring Meets Pressure Equipment Directive (PED) Standard
CK150S50NSN 2” No Strainer 50mm 2” CK1 Socket Weld No Adapter Ring Standard Valve Standard
CK150S50YNSN 2” Strainer 50mm 2” CK1 Socket Weld No Adapter Ring Standard Valve Standard
CK150W50NSN 2” No Strainer 50mm 2” CK1 Weld Neck No Adapter Ring Standard Valve Standard
CK150X00MSN None No Strainer 50mm 2” CK1 No Flange Male Adapter Ring Standard Valve Standard
CK150X00NPN None No Strainer 50mm 2” CK1 No Flange No Adapter Ring Meets Pressure Equipment Directive (PED) Standard
CK150X00NSN None No Strainer 50mm 2” CK1 No Flange No Adapter Ring Standard Valve Standard
CK165K21NPN 2-5/8" No Strainer 65mm 2-1?2” CK1 ODS No Adapter Ring Meets Pressure Equipment Directive (PED) Standard
CK165K21NSN 2-5/8" No Strainer 65mm 2-1?2” CK1 ODS No Adapter Ring Standard Valve Standard
CK165K27NPN 3-1?8” No Strainer 65mm 2-1?2” CK1 ODS No Adapter Ring Meets Pressure Equipment Directive (PED) Standard
CK165S65NPN 2-1?2” No Strainer 65mm 2-1?2” CK1 Socket Weld No Adapter Ring Meets Pressure Equipment Directive (PED) Standard
CK165S65NSN 2-1?2” No Strainer 65mm 2-1?2” CK1 Socket Weld No Adapter Ring Standard Valve Standard
CK165S75NSN 3” No Strainer 65mm 2-1?2” CK1 Socket Weld No Adapter Ring Standard Valve Standard
CK165W65NSN 2-1?2” No Strainer 65mm 2-1?2” CK1 Weld Neck No Adapter Ring Standard Valve Standard
CK165W75NSN 3” No Strainer 65mm 2-1?2” CK1 Weld Neck No Adapter Ring Standard Valve Standard
CK165X00MSN None No Strainer 65mm 2-1?2” CK1 No Flange Male Adapter Ring Standard Valve Standard
CK165X00NPN None No Strainer 65mm 2-1?2” CK1 No Flange No Adapter Ring Meets Pressure Equipment Directive (PED) Standard
CK165X00NSN None No Strainer 65mm 2-1?2” CK1 No Flange No Adapter Ring Standard Valve Standard
CK175K27NPN 3-1?8” No Strainer 80mm 3” CK1 ODS No Adapter Ring Meets Pressure Equipment Directive (PED) Standard
CK175S75NSN 3” No Strainer 80mm 3” CK1 Socket Weld No Adapter Ring Standard Valve Standard
CK175W75NPN 3” No Strainer 80mm 3” CK1 Weld Neck No Adapter Ring Meets Pressure Equipment Directive (PED) Standard
CK175W75NSN 3” No Strainer 80mm 3” CK1 Weld Neck No Adapter Ring Standard Valve Standard
CK175X00MSN None No Strainer 80mm 3” CK1 No Flange Male Adapter Ring Standard Valve Standard
CK175X00NPN None No Strainer 80mm 3” CK1 No Flange No Adapter Ring Meets Pressure Equipment Directive (PED) Standard
CK175X00NSN None No Strainer 80mm 3” CK1 No Flange No Adapter Ring Standard Valve Standard
CK1A0SP0NSN 4” No Strainer 100mm 4” CK1 Socket Weld No Adapter Ring Standard Valve Standard
CK1A0WP0NSN 4” No Strainer 100mm 4” CK1 Weld Neck No Adapter Ring Standard Valve Standard
CK1A0X00MSN None No Strainer 100mm 4” CK1 No Flange Male Adapter Ring Standard Valve Standard
CK1A0X00NPN None No Strainer 100mm 4” CK1 No Flange No Adapter Ring Meets Pressure Equipment Directive (PED) Standard
CK1A0X00NSN None No Strainer 100mm 4” CK1 No Flange No Adapter Ring Standard Valve Standard
CK1A1SP1NSN 5” No Strainer 125mm 5” CK1 Socket Weld No Adapter Ring Standard Valve Standard
CK1A1WP1NSN 5” No Strainer 125mm 5” CK1 Weld Neck No Adapter Ring Standard Valve Standard
CK1A1X00NSN None No Strainer 125mm 5” CK1 No Flange No Adapter Ring Standard Valve Standard
CK1A2SP2NSN 6” No Strainer 150mm 6” CK1 Socket Weld No Adapter Ring Standard Valve Standard
CK1A2WP2NSN 6” No Strainer 150mm 6” CK1 Weld Neck No Adapter Ring Standard Valve Standard
CK1A2X00NSN None No Strainer 150mm 6” CK1 No Flange No Adapter Ring Standard Valve Standard
CKS20S20NSN 3/4" No Strainer 20mm 3?4” CKS Socket Weld No Adapter Ring Standard Valve .109 Piston
CKS20S32NSN 1-1?4” No Strainer 20mm 3?4” CKS Socket Weld No Adapter Ring Standard Valve .109 Piston
CKS20X00NSN None No Strainer 20mm 3?4” CKS No Flange No Adapter Ring Standard Valve .109 Piston
CKS25S25NSN 1” No Strainer 25mm 1” CKS Socket Weld No Adapter Ring Standard Valve .109 Piston
CKS25X00NSN None No Strainer 25mm 1” CKS No Flange No Adapter Ring Standard Valve .109 Piston
CKS32S32NSN 1-1?4” No Strainer 32mm 1-1?4” CKS Socket Weld No Adapter Ring Standard Valve .109 Piston
CKS32X00NSN None No Strainer 32mm 1-1?4” CKS No Flange No Adapter Ring Standard Valve .109 Piston
CKS40S38NSN 1-1?2” No Strainer 40mm 1-5?8” CKS Socket Weld No Adapter Ring Standard Valve .109 Piston
CKS40X00NPN None No Strainer 40mm 1-5?8” CKS No Flange No Adapter Ring Meets Pressure Equipment Directive (PED) .109 Piston
CKS50S50NSN 2” No Strainer 50mm 2” CKS Socket Weld No Adapter Ring Standard Valve .109 Piston
CKS50X00NPN None No Strainer 50mm 2” CKS No Flange No Adapter Ring Meets Pressure Equipment Directive (PED) .109 Piston
CKS65S65NSN 2-1?2” No Strainer 65mm 2-1?2” CKS Socket Weld No Adapter Ring Standard Valve .109 Piston
CKS65X00NSN None No Strainer 65mm 2-1?2” CKS No Flange No Adapter Ring Standard Valve .109 Piston
CKS75S75NSN 3” No Strainer 80mm 3” CKS Socket Weld No Adapter Ring Standard Valve .109 Piston
CKS75X00NPN None No Strainer 80mm 3” CKS No Flange No Adapter Ring Meets Pressure Equipment Directive (PED) .109 Piston
CKS75X00NSN None No Strainer 80mm 3” CKS No Flange No Adapter Ring Standard Valve .109 Piston
CKSA0SP0NSN 4” No Strainer 100mm 4” CKS Socket Weld No Adapter Ring Standard Valve .109 Piston
CKSA0WP0NSN 4” No Strainer 100mm 4” CKS Weld Neck No Adapter Ring Standard Valve .109 Piston
CKSA0X00NPN None No Strainer 100mm 4” CKS No Flange No Adapter Ring Meets Pressure Equipment Directive (PED) .109 Piston
CKSA2SP2NSN 6” No Strainer 150mm 6” CKS Socket Weld No Adapter Ring Standard Valve .109 Piston
CK125S25NSN 1” No Strainer 25mm 1” CK1 Socket Weld No Adapter Ring Standard Valve Standard
CK125S32NNPN 1-1?4” No Strainer 25mm 1” CK1 Socket Weld No Adapter Ring Meets Pressure Equipment Directive (PED) Standard
CK125S32NSN 1-1?4” No Strainer 25mm 1” CK1 Socket Weld No Adapter Ring Standard Valve Standard
CK125W25NSN 1” No Strainer 25mm 1” CK1 Weld Neck No Adapter Ring Standard Valve Standard
CK125X00MSN None No Strainer 25mm 1” CK1 No Flange Male Adapter Ring Standard Valve Standard
CK125X00NNPN None No Strainer 25mm 1” CK1 No Flange No Adapter Ring Meets Pressure Equipment Directive (PED) Standard
CK125X00NSN None No Strainer 25mm 1” CK1 No Flange No Adapter Ring Standard Valve Standard
CK132F38NNSN 1-1?2” No Strainer 32mm 1-1?4” CK1 FPT No Adapter Ring Standard Valve Standard
CK132K14NSN 1-5/8" No Strainer 32mm 1-1?4” CK1 ODS No Adapter Ring Standard Valve Standard
CK132S32NSN 1-1?4” No Strainer 32mm 1-1?4” CK1 Socket Weld No Adapter Ring Standard Valve Standard
CK132S38MSN 1-1?2” No Strainer 32mm 1-1?4” CK1 Socket Weld Male Adapter Ring Standard Valve Standard
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