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.
Additional information
| 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 |
Features & Benefits
- 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
Standards & Certifications
| 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 Dimenions 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 |
