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Trueline Products

Our proprietary products and vast technical expertise in the valve industry allows Trueline to provide valve solutions for the most severe service applications.


Check Valve

Products Design Features


WAFER - C9000
Wafer check valve.

Available with hydraulic counter weight, for slow closing.

Lever counter weight is available on larger diameters.


FLANGED - N596B (CLASS 300) & N696B (CLASS 600)
Check Valves 1/2" ~ 10" (DN 15~ DN 250).

Valve design according to ASME/ANSI B16.34 , BS 1868.

Shell wall Thickness according to ASME/ANSI B16.34 class 300 and class 600.

Pressure – temperature rating according to ASME/ANSI B16.34.

Face to Face according to ASME/ANSI B16.10 class 300 RF and 600RF.

Flanged dimension according to ASME/ANSI B16.5 class 300 RF and class 600 RF, Finish 125-250 AARH.


SCREWED - N690
Swing check valves 1/2" ~ 2" (DN10 ~ DN50) .

Swing type.

Working pressure: 200psi.

End connections : Threaded end.

ANSI B1.20.1(NPT); DIN 259 / DIN 2999; ISO 228; BSP; PT.


SCREWED - SC800R
Swing check valve design.

Premium Graphoil spiral wound gaskets for high pressure/temperature services; other gaskets available.

Body cap joints designed for optimum sealing with spiral wound gaskets, strong bonnet bolts designed for easy maintenance.

Lift check valve seat integral and stellite faced, for longer service.

Swing check valve seat stellited for longer service and renewable.

Tapered discs and seats to minimize slamming of disc, ensuring longer wear.

Body ribs to ensure positive grip by pipe fitter’s wrench for screwed valve installations.

Oblique and angle pattern valves available.

No copper-bearing alloys. No asbestos material in API 602 valves.


SCREWED - LC800R
Lift check valve design.

Premium Graphoil spiral wound gaskets for high pressure/temperature services; other gaskets available.

Body cap joints designed for optimum sealing with spiral wound gaskets, strong bonnet bolts designed for easy maintenance.

Lift check valve seat integral and stellite faced, for longer service.

Swing check valve seat stellited for longer service and renewable.

Tapered discs and seats to minimize slamming of disc, ensuring longer wear.

Body ribs to ensure positive grip by pipe fitter’s wrench for screwed valve installations.

Oblique and angle pattern valves available.

No copper-bearing alloys. No asbestos material in API 602 valves.


FLANGED - N296B
Check Valves 1/2" ~ 12" (DN 15~ DN 300).

Valve design according to ASME/ANSI B16.34 , BS 1868.

Shell wall Thickness according to ASME/ANSI B16.34 class 150.

Pressure – temperature rating according to ASME/ANSI B16.34.

Face to Face according to ASME/ANSI B16.10 class 150 RF.

Flanged dimension according to ASME/ANSI B16.5 class 150 RF, Finish 125-250 AARH.

Pressure testing according to API 598.


FLANGED - F6112 SEAT & DISC
When ordering the seat & disk assembly only, make sure you select the seat & disk one size smaller than your line size (i.e. 4" assembly for 6" line).


FLANGED - F6110
Available in:

• CF8M (316)
• CG8M (317)
• 254 SMO
• Titanium
• Many other options or material combinations are available.


Swing Check Valve Class 150/300/600/900/1500/2500
Valve design: ASME B16.34 - BS 1868 - PED - API 6D/ISO 14313 - MSS SP-42


Swing Check Valve Class 900/1500/2500 PS
Valve design: ASME B16.34 - BS 1868 - PED - API 6D/ISO 14313 - MSS SP-42
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