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 Water Hammer: The Mechanism Email Magazine Discover steam engineering tips in our bi-monthly newsletter. Sign up now Strainers, Sight Glasses and Other Strainers, sight glasses, and non-freeze valves used in the steam trap periphery. Operating Pressure Range: 0 - 40 bargOperating Temperature Range: -20 - 400 °C NF6 Automatic Non-freeze Valve (Animation) Subcategories Y-strainersFor removing dirt and scale from inside piping. Sight GlassesFor visually monitoring the flow of fluids from the outside of the piping. Automatic Non-freeze ValvesUsed to prevent the freezing of residual condensate during shut-down. Benefits and Features Strainers, sight glasses, and a variety of other products ancillary to steam traps and other valves. A line-up of sizes and materials convenient for use with steam systems Optional automatic non-freeze valve or blow-off valve combined with the trap body (consult with TLV when placing order) Sight glasses feature a PTFE (fluorine resin) gasket for easy disassembly and maintenance Application Areas Strainer: protects equipment by removing scale and foreign matter from steam traps, reducing valves, control valves, etc. Sight glass: used to check flow status of fluids Automatic non-freeze valve: protects steam traps from problems caused by frozen condensate Blow-off valve: blows scale out of steam traps
