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The TLW® Check Valve (Tapped Lug Wafer) was engineered for applications where exposed studs are not suitable. This non-slam spring-assisted, center-guided, lugged pattern wafer check valve is designed to prevent water hammer and reverse flow. The lightweight compact design fits between mating flanges and meets API 594 face-to-face dimensions. The TLW® Check Valve body design eliminates potential leak paths to the environment and is an easy-to-maintain check valve for applications involving liquids, gases, or steam. Tapped holes are provided in the body for lifting lugs to assist with installation (10" and larger sizes only).
Unit of Measure

Specifications

Series

 N/A TLW®

ASME CLASS

 N/A 300

Size

 N/A 2.50 in

Dimension A

 N/A 2.62 in67 mm

Dimension B

 N/A 7.50 in190.50 mm

Weight

 N/A 22 lb10.0 kg

Cracking Pressure CP

 N/A 0.034 bar0.5 psig

ENDS

 N/A Wafer (RF)

Cv

 N/A 205

Materials of Construction

Body

 N/A A216 WCB

Seat

 N/A 316 SS

Spring

 N/A Inconel® X-750

Body Material

 N/A Carbon Steel

Disc/Stem Assembly

 N/A 316 SS/Nitronic 60

Bushing

 N/A A479 316

Bushing Material

 N/A 316 SS

Gasketing

 N/A CFG (Corrugated Flexible Graphite)

Codes and Standards

ANSI

 N/A B16.34 B16.5

ASTM

 N/A A216GR WCB A351GR CF8M

MSS

 N/A SP-25 SP-6 SP-61

Other

 N/A API 594

Available Soft Seat Materials

N/A Buna-N (-70 to 250°F) EPDM (-75 to 300°F) TFE®-Viton® (-40 to 400°F) Viton® (-40 to 400°F) Zelon® (37 to 400°F)

Application

N/A Autoclaves Boiler Feed & Discharge Chemical Lines Compressor Discharge Condensate Lines Cookers Cooling Towers Crude & Refined Product Lines Cryogenics Digester Evaporators Fly Ash System Generator Inlet & Discharge Hydraulic Lines Metering Pumps Mine Dewatering Nitrogen Purge Process Lines Pump Discharge Refrigeration Steam Lines Vacuum Breaker Water Lines Water Treatment

Industry

N/A Building Maintenance Chemical Processing Food, Beverage & Pharmaceutical Gas Transmission Mining Petroleum Production & Refining Power Generation Primary Metals Pulp & Paper Textiles

Inventory

Inventory

 N/A {0}