Vahn-Tech DB Series funnel knife gate valve is used in service as a pneumatic residue discharge valve in pulp making, paper making and sewage treatment. This type of valve is well suited for high consistency media containing solids, fiber or residue, serving as a residue discharge valve on stock cleaners, gravity separators or pressurized screens. The “funnel” at the bottom of the collects waste discharged from the valve body during the closing stroke. This greatly reduces the wear between the body and gate, and prolongs the life cycle of the valve.
Additional information
| Valve Size | 4" to 16" |
|---|---|
| Pressure Class Standard | MSS SP 81 |
| Pressure Class Range | 150 CWP |
| Body | 2-Piece Bolted |
| End Connections | Integral Flange Raised Face |
| Face-to-Face Standard | MSS SP 81 |
| Bonnet | Yoke Arms |
| Packing | Transverse PTFE |
| Configuration | Push-Through Low-Pressure Knife Gate |
| Trim | Knife Gate |
| Seat Type | Full Port |
| Seating | Soft, Metal |
| Shut-Off Classification | MSS SP 81 |
Features & Benefits
- Sight glass set at the bottom of the funnel allows for observation of the waste level in the funnel
- Two-piece body construction with no cavities eliminates product build-up
- Double Stem Bearings at the top of the yoke for easy operation and for torque reduction
- Internal packing and packing gland are internally loaded, ensuring a tight seal and preventing leakages
- Travel aligning block installed at the inlet of the body serves as a supportive force to regulate the flow of the accumulated medium between the gate and body cavity
- Seats are backed with an o-ring to give the seat a self-compensating wear function; this results in excellent seat tightness and prolonged life cycle
- Gate is designed with standard precision ground and hard plated chrome which provides superior abrasion and corrosion resistance
Standards & Certifications
| Certifications | Canadian Registration Number (CRN) |
|---|---|
| Design Standards | MSS SP 81 – Stainless Steel, Bonnetless, Flanged Knife Gate Valves |
| ASME B16.5 – Pipe Flanges & Flanged Fittings | |
| ASME SA Materials | |
| ASTM A Materials | |
| Quality | IS0 9001:2015 |
