The Vatac Wafer knife gate valves are available in both uni-directional or bi-directional styles. Designed for general industrial service applications. The design of the body and seat assures non-clogging shutoff on suspended solids in industries such as:
» Pulp and Paper » Power plants » Wastewater treatment plants
» Chemical plants » Food and Beverage » Bulk handling » Mining

MAIN FEATURES:
» ROBUST AND COMPACT MOUNTING YOKE MADE OF STEEL
» GLAND PACKING MADE OF PTFE IMPREGNATED FIBRES
» SINGLE PIECE OR TWO PIECE BODY WITH FULL BORE, MACHINED INSIDE
» FLUSHING CORNERS IN THE BODY
» FLANGE CONNECTION VIA THREADED POCKET HOLES AND THROUGH BOLTS
» CAST IRON AND STEEL COMPONENTS EPOXY COATED AS AN OPTION
» STAINLESS STEEL VALVE DISC POLISHED ON BOTH SIDES, SEALED BY CONFINED U-SHAPED ROD SEAL FOR THE ENTIRE VALVE TRAVEL
» FLANGE SEALS INTEGRATED IN THE BODY AS A STANDARD (O-RING)
» WIDE RANGE OF SIZES: Available in sizes in 2"~60". With ANSI 125/150 flange drilling or an option for DIN, BS, AS or other Standard.
» BROAD LINE OF MATERIALS: The solid cast body is offered in Cast iron, carbon steel, stainless steel 304, 316, or 317L with either carbon steel or stainless steel topworks. Special alloys on request. Cast ductile iron bodies are offered with carbon steel topworks.

Vatac Full Lug Knife Gate valves are with main design feature as below
» Compact design
» Self aligning gland box
» One piece integral cast body, chest and lugs
» Integral cast in gate wedges minimize flow obstructions
» High quality gate finish for optimum sealing
» High flow rates with low pressure drops
» Gate guides to support gate
» Wide range of seat options available
» Meets or exceeds the shutoff requirements of MSS SP-81 leakage specifications
» Complies with MSS SP-81 face to face dimensions
» 100% pressure tested
» Maintenance free.

STANDARDS COMPLIANCE:
» MSS SP-81 » ASME B16.10 » ASME B16.5 » ASME B16.47 » ASME B16.34
» AS 2129 T/D or T/E » BS 4504 T/D or T/E » MSS SP-55 » EN 1092

ACUTATIONS:
Can be fitted with actuation options including handwheel (standard), lever handle operator, bevel gear, chainwheel, electric actuator, pneumatic actuator, hydraulic actuators, and fail close actuators.

The semi Lugged knife gate valve manufactured by Vatac is designed for general industrial service applications. The design of the body and seat assures non-clogging shutoff on suspended solids in industries such as:
» Compact design
» Self aligning gland box
» One piece integral cast body, chest and lugs
» Integral cast in gate wedges minimize flow obstructions
» High quality gate finish for optimum sealing
» High flow rates with low pressure drops
» Gate guides to support gate
» Wide range of seat options available
» Meets or exceeds the shutoff requirements of MSS SP-81 leakage specifications
» Complies with MSS SP-81 face to face dimensions
» 100% pressure tested
» Maintenance free.

STANDARDS COMPLIANCE:
» MSS SP-81 » ASME B16.10 » ASME B16.5 » ASME B16.47 » ASME B16.34
» AS 2129 T/D or T/E » BS 4504 T/D or T/E » MSS SP-55 » EN 1092

ACUTATIONS:
Can be fitted with actuation options including handwheel (standard), lever handle operator, bevel gear, chainwheel, electric actuator, pneumatic actuator, hydraulic actuators, and fail close actuators.

Double flanged knife gate valve manufactured by Vatac is one product with construction of bolted bonnet, Vatac offers a broad line of Flanged Ends Knife Gates covering Resilient and Metal to Metal, Size ranges from 2” to 60” diameter, pressures in PN6, PN10, PN16, ANSI # Class 125 & Class 150. A broad body and trim materials are selected and fabricated to suit for various service conditions.

Vatac Flanged Knife Gate Valve is built with a cast body and features a heavy-duty stainless steel blade. Removable seats on either side of the gate provide a bi-directional bubble tight seal, with no metal parts in contact with the slurry.

DESIGNNING FEATURES ON VATAC DOUBLE FLANGE KNIFE GATE VALVES
» Full bore
» Bubble tight shutoff
» Easily replaceable ring sleeves. .
» When open, the knife-gate is fully withdrawn from the slurry flow.
» No metal parts in contact with the flowing slurry.
» No clogged bonnet to impede flow.
» External epoxy coated.
» Easily adapted to suit most actuators
» Low maintenance requirements.
» Suitable for wet or dry service.
» No packing gland to maintain.
» Wide range for elastomer available.
» No seat cavity where solids can collect and prevent full gate closure.
» Optional Flushing port as request

The Vatac through conduit wafer valve is designed for media with high consistency. The double seat design assures a non-clogging shut off on either normal or reverse flow.

DESIGNNING FEATURES:
» BODY: Wafer style cast two-part bolted body, internally machined, with reinforced ribs in larger diameters for extra body strength. Full port design for greater flow capacity and minimal pressure drop.

» SELFCLEANING GATE: Stainless steel gate as standard. One piece gate with o-port design. While closing, the gate moves a disc of material laterally which returns to the flow when opening. Gate is polished on both sides for a greater seal between the gate with
both packing and seat. On request: thickness and/or material of the gate can be changed for higher pressure requirement.

» RESILIENT TIGHT SHUT-OFF SEAT: Unique design that mechanically locks the seat in the internal of the valve body with a stainless steel retainer ring. Standard EPDM; also available in different materials such as Viton, PTFE, etc.

» PACKING: Double stuffing box with several layers of braided fibre plus an EPDM o-ring, with an easy access packing gland ensuring a tight seal. Long-life braided packing is available in a wide range of materials.

» STEM: The standard stainless steel stem offers a long corrosion resistant life. For rising stem handwheel actuators only, a stem protector is provided for additional protection against dust while the valve is in the open position.

The Vatac Wafer Style Slurry Knife Gate valve is used in a wide range of demanding applications in industries such as
» Mining » Power » Pulp and paper » Phosphates » Steel/Metals »  Chemical » Cement

» 100% Isolation; bubble-tight shut-off results in absolutely zero downstream leakage
» Double-seated design provides bidirectional flow and shut-off
» Unobstructed flow eliminates turbulence, minimizes pressure drop across valve
» No seat cavity where solids can collect and prevent full gate closure
» Dynamic self-adjusting secondary seal
» No gate or stem packing is required, eliminating packing leakage and maintenance
» Long lasting lubrication
» No metal parts in contact with the flowing slurry
» Adaptable yoke design featuring a top-removal stem nut, can be field modified to an air cylinder or bevel gear in the field without welding
» Open-Closed lockout brackets standard through 16", ready for optional factory supplied or customer supplied lockout pins

» Each sleeve incorporates a more robust support disc into a one-piece design which resists over-compression of the sleeveInternal profile of sleeve provides a pressure assist to the sealing function
» Sleeve profile reduces drag and provides longer service life
» Easier installation in a variety of pipe styles