VATAC DUAL PLATE CHECK VALVE DESIGN FEATURES
» LAPPED BODY & DISC SEATS
» RETAINERLESS BODY DESIGN
» INTRINSICALLY FIRE SAFE
» HIGH TORSION SPRING
» SUPERIOR HINGE DESIGN

» Design & Manufactured to API 6D, API 594, ASME B16.34 or Equivalent
» P.T Ratings to ASME B16.34
» Face to Face Dimensions to ASME B16.10
» Flanged Ends to ASME B16.5
» Butt-weld Ends to ASME B16.25
» Valves Marking to MSS SP-25
» Inspect & Tested to API 598
» Sizes Ranges from 1/2” thru 60”.
» Structured in One Piece Union Body
» Pressure Ratings from Class 150 to Class 2500, PN16 to PN420
» Ends Connections in Flanged R.F or RTJ, Wafer, Fully Lugged and Grooved

Vatac offers a broad line of Dual Plate Check Valves with ends connections in Wafer, Flanges or Fully Lugged, all items are designed and manufactured strictly to International Standards API 6D, API 594, ASME B16.34 or Equivalent.
» Retainerless Body Design: There is no need for retainers and leakage to the outside is impossible.
» Lapped Body & Disc Seat: Easily meet or exceed test requirements of API 598 for metal-seated check valves.
» High torsion spring loaded design: Ensuring a low craking pressure
» Light Weight and small Space: Saving a lot in cost and installation

VATAC SINGLE DISC WAFER CHECK VALVE DESIGN FEATURES
» LAPPED BODY & DISC SEATS
» RETAINERLESS BODY DESIGN
» INTRINSICALLY FIRE SAFE
» HIGH TORSION SPRING
» SUPERIOR HINGE DESIGN

» Design & Manufactured to API 6D, API 594, ASME B16.34 or Equivalent
» P.T Ratings to ASME B16.34
» Face to Face Dimensions to ASME B16.10
» Flanged Ends to ASME B16.5
» Butt-weld Ends to ASME B16.25
» Valves Marking to MSS SP-25
» Inspect & Tested to API 598
» Sizes Ranges from 1/2” thru 60”.
» Structured in One Piece Union Body
» Pressure Ratings from Class 150 to Class 2500, PN16 to PN420
» Ends Connections in Flanged R.F or RTJ, Wafer, Fully Lugged and Grooved

Vatac offers a broad line of Single Disc Wafer Check Valves with ends connections in Wafer, Flanges or Fully Lugged, all items are designed and manufactured strictly to International Standards API 6D, API 594, ASME B16.34 or Equivalent.
» Retainerless Body Design: There is no need for retainers and leakage to the outside is impossible.
» Lapped Body & Disc Seat: Easily meet or exceed test requirements of API 598 for metal-seated check valves.
» High torsion spring loaded design: Ensuring a low craking pressure
» Light Weight and small Space: Saving a lot in cost and installation

Swing type wafer check valves are used mainly on larger pipeline sizes, typically above DN125, because on smaller pipelines the pressure drop, caused by the disc 'floating' on the fluid stream, becomes significant. Furthermore, there are significant cost savings to be made by using these valves on larger sizes, due to the small amount of material required for the construction of the valve.
» Sizes Ranges from 1/2” thru 24”.
» Structured in One Piece Casted or Forged Union Body
» Pressure Ratings from Class 150 to Class 600, PN16 to PN110

Swing Wafer check valves are becoming the preferred type of check valve for most applications, due to their compact design and relatively low cost. The following is a list of some of their most common applications:
» Boiler feedlines » Steam traps » Hot water circuits » Vacuum breakers
» Blending » Pipeline fitting protection » Multiple boiler applications
» Blowdown vessels » Flash vessels

Lift Wafer Check Valve is also named as Disc Check Valve, Vatac Lift Wafer Check Valve is in Small Face to face dimension which is only of 1/4~1/8 of Standard Swing Flanged Check Valves. With Small Volume and Weight, Disc can be quickly closed which ensuring a very small water hammer pressure, Perfect Flow Passage gives a very small flow resistance. Lift Wafer check valves can be easily installed onto Pipelines both in Vertical and Parallel style, With Flexible actions and perfect sealing, The Valve Disc of Vatac Lift wafer check is with a short travelling journey which ensuring a very small impact caused by valve close, Vatac Lift Wafer Check is Integral Designed, provided with a compact structure and beautiful appearance. Reliable provided with Long time service life, providing with a device preventing Flow Direction Reverse or Stop which can be controlled automatically. The disc check valve consists of four main components: the body, a disc, a spring and a spring retainer. The disc moves in a plane at right angles to the flow of the fluid, resisted by the spring that is held in place by the retainer. The body is designed to act as an integral centring collar that facilitates installation. Where a 'zero leakage' seal is required, a soft seat can be included.

MAIN ADVANTAGES
» Suitable for all usable flange standards
» Short face-to-face length invaluable where space is limited
» Low weight results in low handling costs and ease of installation
» Low pressure drop and low opening pressure
» Fully open with small water velocity, without closing spring
» Excellent tightness
» Rapid response - oblique seat reduces closing travel
» The circular wafer body is designed to be clamped between two pipe fl anges.
» The valve disc is suspended on two heavy stub shafts with the selected suspension points giving the fastest closing possible.
» The stub shafts are sealed externally by integrally welded plates.The seat is oblique in order to give a short closing travel and thus a short closing time.
» Spring Loaded Construction reduces water hammering

TYPICAL DESIGN FEATURES ON VATAC WAFER TILTING DISC CHECK
» Small face to face dimension
» Light weight for easy site installations
» Allows opening at low pressure differentials
» Tight shut-off resilient seated design to “Zero” Leakge
» Metal to metal shut-off at both high and low pressure differentials

The Vatac Wafer tilting disc check valve is designed to open at 1 psi of pressure and withstand pressures up to 150 psi. The entire valve is a cast design for better strength and stability. Sizes from 2" through 40" and in body materials ranging from carbon steel, low carbon steel, stainless steel, and duplex, The Vatac Wafer Ends Tilting Disc Check is an excellent choice for raw water, cooling water and treated water/wastewater applications. Its streamlined body contouring, flow area 40% greater than nominal pipe size and hydrodynamic disc combine to provide the lowest headloss of any check valve produced today.

TYPICAL DESIGN FEATURES ON VATAC WAFER TILTING DISC CHECK
» Small face to face dimension
» Light weight for easy site installations
» Allows opening at low pressure differentials
» Tight shut-off resilient seated design to “Zero” Leakge
» Metal to metal shut-off at both high and low pressure differentials

MAIN ADVANTAGES
» Suitable for all usable flange standards
» Short face-to-face length invaluable where space is limited
» Low weight results in low handling costs and ease of installation
» Low pressure drop and low opening pressure
» Fully open with small water velocity, without closing spring
» Excellent tightness
» Rapid response - oblique seat reduces closing travel
» The circular wafer body is designed to be clamped between two pipe fl anges.
» The valve disc is suspended on two heavy stub shafts with the selected suspension points giving the fastest closing possible.
» The stub shafts are sealed externally by integrally welded plates.The seat is oblique in order to give a short closing travel and thus a short closing time.
» Spring Loaded Construction reduces water hammering

APPLICATIONS IN THE AREAS BUT NOT LIMITED TO
» Pulp and paper
» Waster water treatment plants
» Food beverage

Vatac Non slam Wafer check valves are designed and manufactured strictly to updated International Standards of API 6D, ASME B16.34 or Equivalent; which is specifically designed for fast-reversing systems where backflow is a constant concern. In such critical service applications, Vatac Non-Slam Wafer Check Valves offer the following benefits.

» Minimizes the damaging effects of water hammer in fluid systems
» Removal of chatter associated with conventional valves in reciprocating compressor service
» Protects rotating equipment from damage due to flow reversal
» Minimizes pressure loss in piping systems
» Provides quick dynamic response reducing reverse velocity
» Few moving parts minimizing wear.
» Axial movement of disc resulting in low pressure drop.
» Short stroke of spring-assisted disc providing valve closure quick response

Vatac Non Slam Wafer Check valves deliver an effective dynamic response under various flow deceleration conditions, this unique design features result in superior performance, fast response and lower pressure loss in piping systems.

» Design & Manufactured to API 6D, API 594, ASME B16.34 or Equivalent
» P.T Ratings to ASME B16.34
» Face to Face Dimensions to API 6D Standard or Short Pattern
» Flanged Ends to ASME B16.5, Wafer Ends to API 594
» Butt-weld Ends to ASME B16.25
» Valves Marking to MSS SP-25
» Inspect & Tested to API 598 or API 594
» Sizes Ranges from 2” thru 60”
» Structured in One Piece Union Body
» Pressure Ratings from Class 150 to Class 2500, PN16 to PN420