Mark Four Tek-Check

Mark Four Tek-Check

The Valtek Mark Four Tek-Check, non-slamming piston check valve, provides rugged performance and reliable service in corrosive and non-corrosive, gas and liquid applications. The smooth, nearly-constant area internal passages allow for high capacity flow with minimum turbulence. When the flow ceases or is reversed, the piston closes slowly, preventing pressure surges. The non-slam design is also effective in dampening pulsating flow.

Brand: Valtek
Category: Piston Check Valves
Valve Size 1" to 36"
Pressure Class Standard ASME B16.34
Pressure Class Range Class 150, 300, 600, 900, 1500, 2500
Body Globe, Angle
End Connections Separable Flange, Integral Flange, Screwed (NPT), Socket Weld, Butt Weld, Grayloc
Face-to-Face Standard ANSI B16.10, ANSI ISA S75.03, Manufacturer Standard
Bonnet Standard Bolted
Flow Direction Under
Loading Force Spring in Plug
Action Non-Slam
Trim Plug & Clamped Seat
Seating Metal-to-Metal & Soft
Shut-Off Classification API 598

Non-slamming piston avoids pressure surges upon closing, assists in dampening pulsating flow, opens quickly

High parts interchangeability with Valtek control valves for minimum spare parts inventories

Rugged, streamlined, minimum-weight body with separable end and bonnet flanges for low cost construction

Top-entry for easy in and out-of-line servicing

Clamped-in seat ring for easy removal

Single seat for tight shutoff

Certifications Canadian Registration Number (CRN)
Design Standards ASME B16.5 – Pipe Flanges & Flanged Fittings
ASME B16.9 – Factory-Made Wrought Buttwelding Fittings
ASME B16.10 – Face to Face & End Dimensions of Valves
ASME B16.11 – Forged Fittings, Socket-Welding & Threaded
ASME B16.25 – Buttwelding Ends
ASME B16.34 – Valve Flanged, Threaded, and Welding End
ASME SA Materials
ASTM A Materials
Quality IS0 9001:2008
ATEX QAN
IECEX QAR