Products Steam Traps Mechanical Free Float® (low pressure) Free Float® (med/high pres.) Free Float® for Main Lines With Bypass Valve Large Capacity Float Traps Clean Steam Traps Thermodynamic Disc-Type Thermostatic Thermostatic Temperature Control Clean Steam Traps Steam Trap Stations Condensate Recovery Condensate Recovery Pumps PowerTrap® (Mechanical Pump with Built-in Trap) PowerTrap® (Mechanical Pump) Pressure Reducing Valves With built-in Separator and Trap (for process use) for Process Steam Compact for Steam for Vacuum Steam for Air Without Separator and Trap for Steam Compact for Steam for Vacuum Steam for Air Direct Acting for Steam for Air Safety Valves Control Valves, Controllers Multi-Control Valves with Built-in Separator and Trap for Steam for Vacuum Steam Multi-Control Valves for Steam for Vacuum Steam Control Valves Pneumatic Self-operated Temperature Control Surplussing Valves for Steam Controllers Setpoint MC Vortex Flowmeters Filters Separators for Steam (Built-in Trap) for Air (Built-in Trap) without Built-in Trap Valves Stainless Steel Ball Valves Lock Release Valves Globe Valves Bellows Sealed Valves Bypass Blow Valves Check Valves Strainers, Sight Glasses and Other Y-strainers Sight Glasses Automatic Non-freeze Valves Air Vents Rapid Initial Air Vents Automatic Air Vents Super Compact Automatic Air Vents Air Vents for Steam Air and Drain Traps Free Float® Air Traps Air Traps for High Viscosity Condensate Free Float® Drain Traps Peripheral Equipment Manifolds Flash Vessels Steam Compressor Maintenance Instruments Pocket-size Tester Engineering Software Instantaneous Water Heater More Information Steam Theory Document Search Technical Documents Product Solutions CAD 3D Archived Documents Operation Animations Success Stories System Solutions FAQ Pinpoint Pressure Control with COSPECT® Email Magazine Discover steam engineering tips in our bi-monthly newsletter. Sign up now Check Valves Check valves for steam and other fluids. Disc and spring construction assures stable performance with installation in either vertical or horizontal pipelines. Automatic valves for preventing backflow. Operating Pressure Range: 0.01 - 30 bargOperating Temperature Range: -100 - 350 °C CK Series Check Valves Pamphlet (198 KB) Spring Loaded Disc-type Check Valves Product Details CK3M / CK3T / CK3R Specifications Manual • Max. Operating Pressure: 10/16/21 barg• Max. Operating Temperature: 90/185/220°C• Coil spring, disc type• Screwed connection CK3MG Specifications Manual • Max. Operating Pressure: 21 barg• Max. Operating Temperature: 220°C• Coil spring, disc type• Unique center-guided disc increases durability CKF3M / CKF3R Specifications Manual • Max. Operating Pressure: 16/30 barg• Max. Operating Temperature: 150/350°C• Coil spring, disc type• Wafer type (installed between flanges) CKF3MG / CKF3RG Specifications Manual • Max. Operating Pressure: 16/30 barg• Max. Operating Temperature: 150/350°C• Coil spring, disc type• Wafer type (installed between flanges)• Unique center-guided disc increases durability Always check the specification PDFs for the exact product specification available in your region. Benefits and Features 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 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 Suitable for use in the following applications: CK3M, CKF3M, CK3MG, CKF3MG (metal valve seat) – steam. CK3T (PTFE valve seat) – steam, hot water. CK3R, CKF3R, CKF3RG ( Nitril or Fluorine rubber valve seat) – non-hazardous gasses, air, hot water, water, etc.