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Fluid Control Equipment

Check Valves

CK Series

Check valves for steam and other fluids

Disc and spring construction assures stable performance with installation in either vertical or horizontal pipelines. TLV CK series check valves are ideal for nearly all types of fluid processes with their high sealing performance in both vertical and horizontal piping and their rapid open-close mechanism.

CK Series Check Valves Pamphlet (198 KB)

Benefits and Features

  • Small valve-opening pressure differential.
  • Select between a metal valve seat or a soft valve seat for use with steam, water or air.
  • Available in sizes up to 4 inch on some models.
  • All stainless steel construction (CK3M/CK3T/CK3R also available in brass or bronze).
Reliably Prevents Backflow
  • Check valves utilize a mechanical sealing mechanism to prevent backflow.
  • By providing a tight seal, backflow is safely avoided.
Easy to Use
  • Compact design.
  • There are no restrictions on installation orientation (horizontal, vertical).
  • After the valve has closed, it opens again at the slightest pressure differential.
Long Service Life
  • TLV’s unique center-guided disc (CK3MG, CKF3MG, CKF3RG) offers greater durability.

Application Areas

  • Piping that requires backflow prevention.
  • Locations where frequent opening and closing operation is expected.
Screwed Connection
CK3M/CK3T/CK3R: Select among 3 types of sealing surfaces, depending on the temperature and fluid requirements
Applicable Fluids Max. Operating Temperature TMO (°C) Sealing Surface Model Photo Specifications
Steam 220℃ Metal CK3M CK3M/CK3T/CK3R

Specifications

Steam, Hot water 185℃ PTFE CK3T
Air, water, hot water 90℃ Nitrile Rubber (NBR) CK3R
CK3M has a metal seal. CK3T has a PTFE seal. CK3R has a rubber seal.
CK3MG: Center-guided disc and large flow area ensure superior durability and capacity
Applicable Fluids Max. Operating Temperature TMO (°C) Sealing Surface Model Photo Specifications
Steam, hot water, water 220℃ Metal CK3MG CK3MG Specifications
CK3MG has a centre bar with a metal seal.
Wafer-construction (flangeless)
CKF3M/CKF3R: Compact stainless steel check valves
Applicable Fluids Max. Operating Temperature TMO (°C) Sealing Surface Model Photo Specifications
Steam, hot water, water 350℃ Metal CKF3M CJF3M/CKF3R Specifications
Air, water, hot water 150℃ Fluorine Rubber (FPM) CKF3R
CKF3M has a metal seal. CKF3R has a rubber seal.
CKF3MG/CKF3RG: Center-guided disc and large flow area ensure superior durability and capacity
Applicable Fluids Max. Operating Temperature TMO (°C) Sealing Surface Model Photo Specifications
Steam, hot water, water 350℃ Metal CKF3MG CKF3MG/CKF3RG Specifications
Air, water, hot water 150℃ Fluorine Rubber (FPM) CKF3RG
CKF3MG has a center bar with a metal seal. CKF3RG has a centre bar with a rubber seal.

Product Details

Model Photo Connection Body Material Applicable Fluids PMO (barg) Min. Opening Differential Pressure (bar)* TMO (°C) Sealing Surface Material Specifications Manual
CK3M Screwed Brass
(C3604)
Steam 10 0.02 220 Metal Specifications Manual
Bronze
(CAC407)
Stainless Steel
(ASTM A351
Gr.CF8)
21
CK3T Screwed Brass
(C3604)
Steam
Hot water
10 0.02 185 PTFE
Bronze
(CAC407)
Stainless Steel
(ASTM A351
Gr.CF8)
16
CK3R Screwed Brass
(C3604)
Air
Hot water
Water
10 0.02 90 NBR
Bronze
(CAC407)
Stainless Steel
(ASTM A351
Gr.CF8)
16
CK3MG Screwed Stainless Steel
(ASTM A351
Gr.CF8)
Steam
Hot water
Water
21 0.01 220 Metal Specifications Manual
CKF3M Wafer Stainless Steel
(ASTM A351
Gr.CF8)
Steam
Hot water
Water
30 0.02 350 Metal Specifications Manual
CKF3R Wafer Stainless Steel
(ASTM A351
Gr.CF8)
Air
Hot water
Water
16 0.02 150 FPM
CKF3MG Wafer Stainless Steel
(ASTM A351
Gr.CF8)
Steam
Hot water
Water
30 0.01 350 Metal Specifications Manual
CKF3RG Wafer Stainless Steel
(ASTM A351
Gr.CF8)
Air
Hot water
Water
16 0.01 150 FPM
  • PMO = Maximum Operating Pressure
  • TMO = Maximum Operating Temperature
  • *When the valve has remained closed for a long period of time, the valve and the valve seat may stick, increasing the necessary minimum opening differential pressure.
  • The latest version of each product's instruction manual can be found on this page.

Product Related Information