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LOW PRESSURE KNIFE GATE VALVES

HIGH PERFORMANCE KNIFE GATE VALVE

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OVERVIEW

DC Series - Wafer/Lug Type

VAHN-TECH DC Series knife gate valves are linear shutoff valves that are lightweight with compact construction. Valves are available as manual with handwheel or automated with pneumatic cylinder or electric actuator for remote operation. The knife gate valves’ gates have an arc shape, designed to be particularly suitable for cutting off fluid containing fibre or suspended particles. The knife gate valves are ideal for many applications in the process industries of Pulp & Paper, Wastewater Treatment, Mining, Sugar Making, and Chemical Processing

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TECHNICAL SPECIFICATIONS

Design Standard MSS SP 81
Size Range 2" - 48"
Pressure Rating 100 / 150 psi
Working Temperature -20˚C ~ +120˚C
End Connection ANSI Class 150 (Wafer / Lug Type)
Test & Inspection MSS SP 81 / AWWA C520
Materials
Body WCB / CF8 / CF8M
Gate SS410 / SS304 / SS316 + HCr
Seat Metal / PTFE / EPDM / Rubber / Viton

SLURRY TYPE KNIFE GATE VALVE

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OVERVIEW

DK Series - Slurry Type

VAHN-TECH DK Series knife gate valves are soft-sealing shut off valves with lightweight and compact construction and are convenient to install and use. Valves are in full port design and with small flow resistance. When the gate is open, direct current flows between the valve and pipeline. Valves can be operated manually with a handwheel or with an automatic actuator for remote operation. The cone-shaped design of the gates provides a substantial cutting force. The die-casting rubber seats are with bi-directional sealing. The valves’ main advantage is that when fully open, the medium will not flow into the valve chest, preventing the pulp from setting in the valve chest and reducing the maintenance cost.

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TECHNICAL SPECIFICATIONS

DESIGN STANDARD MSS SP 81
SIZE RANGE 2" - 48"
PRESSURE RATING 100 / 150 psi
WORKING TEMPERATURE -20˚C ~ +120˚C
END CONNECTION ANSI B16.5 Class 150 (Lug Type)
TEST & INSPECTION MSS SP 81 / AWWA C520
MATERIALS
Body WCB / CF8 / CF8M
Gate SS410 / SS304 / SS316 + HCr
Seat Metal / PTFE / EPDM / Rubber / Viton

THROUGH CONDUIT TYPE KNIFE GATE VALVE

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OVERVIEW

DT Series - Through-Going Type

VAHN-TECH DT Series knife gate valve is mainly intended for process control in pulp slurry, residue discharge and sewage treatment. It is especially suitable for installation with equipment such as stock cleaners, gravity separators, and aqua pulper.

Features:

      1. The valve is full port in the position with low flow resistance.
      2. Two-piece body construction with no cavities eliminates product build-up.
      3. Tight shutoff and reliable performance.
      4. O-ring loaded removable seat is self-compensation with good abrasion resistance and long service life.
      5. Available seat materials are: Metal, PTFE, or EPDM.
https://n2x.ca/wp-content/uploads/2020/08/Artboard7-1275x1045.jpg

TECHNICAL SPECIFICATIONS

DESIGN STANDARD MSS SP 81
SIZE RANGE 3" - 24"
PRESSURE RATING 100 / 150 psi
WORKING TEMPERATURE -20˚C ~ +120˚C
END CONNECTION ANSI Class 150 (Wafer Type)
TEST & INSPECTION MSS SP 81 / AWWA C520
MATERIALS
Body WCB / CF8 / CF8M
Gate SS410 / SS304 / SS316 + HCr
Seat Metal / PTFE / EPDM / Rubber / Viton

SQUARE TYPE KNIFE GATE VALVE

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OVERVIEW

DF Series - Square Type

VAHN-TECH DF Series square knife gate valve is mainly used as a pneumatic on/off valve for process control in pulp making slurry or sewage treatment. It is particularly suitable to serve as a residue discharger on equipment such as stock cleaners, gravity separators, and hydra pulper in the papermaking industry.

Features:

      1. The valve is full port in the position with low flow resistance.
      2. Two-piece body construction with no cavities eliminates product build-up.
      3. Tight shutoff, reliable performance.
      4. O-ring loaded removable seat is self-compensation with good abrasion resistance and long service life.
      5. Available seat materials are: Metal, PTFE, or EPDM.
https://n2x.ca/wp-content/uploads/2020/08/Artboard-6-1275x1045.jpg

TECHNICAL SPECIFICATIONS

DESIGN STANDARD MSS SP 81
SIZE RANGE 2" - 24"
PRESSURE RATING 100 / 150 psi
WORKING TEMPERATURE -20˚C ~ +120˚C
END CONNECTION ANSI Class 150 (Wafer Type)
TEST & INSPECTION MSS SP 81 / AWWA C520
MATERIALS
Body WCB / CF8 / CF8M
Gate SS410 / SS304 / SS316 + HCr
Seat Metal / PTFE / EPDM / Rubber / Viton

FUNNEL TYPE KNIFE GATE VALVE

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OVERVIEW

DB Series - Funnel Type

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, fibre, or residue, serving as a residue discharge valve on stock cleaners, gravity separators, or pressurized screens. The “funnel” at the bottom of the valve collects waste discharged from the valve body during the closing stroke, dramatically reducing the wear between the body and gate and prolonging the valve’s life cycle.

Features:

      1. A sight glass, set at the bottom of the funnel, allows for observation of the funnel’s waste level.
      2. The valve is full port in the position with low flow resistance.
      3. Two-piece body construction with no cavities eliminated product build-up.
      4. Tight shutoff, reliable performance.
      5. O-ring loaded removable seat is self-compensating with good abrasion resistance and long service life.
      6. Available seat materials are: Metal, PTFE, or EPDM.
https://n2x.ca/wp-content/uploads/2020/08/Artboard-7-1275x1045.jpg

TECHNICAL SPECIFICATIONS

DESIGN STANDARD MSS SP 81
SIZE RANGE 4" - 16"
PRESSURE RATING 100 / 150 psi
WORKING TEMPERATURE -20˚C ~ +120˚C
END CONNECTION ANSI Class 150 (Wafer Type)
TEST & INSPECTION MSS SP 81 / AWWA C520
MATERIALS
Body WCB / CF8 / CF8M
Gate SS410 / SS304 / SS316 + HCr
Seat Metal / PTFE / EPDM / Rubber / Viton