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Wye Line

Worldwide, plant managers and maintenance engineers recognize the Vortex® Wye Line Diverter™ as the industry standard dilute phase diverter specifically designed for handling dry bulk solid materials.

Ideal application: Diverting or converging materials in high cycle applications. Common in storage fill and/or storage transfer applications. When applied in minimally abrasive applications or as an air directional valve, Wye Line Diverters often record more than 10 million cycles over the course of their service life.

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Key Features

  1. Live Loaded, wear compensating hard polymer pressure plate seals

  2. Shimming system allows for in-line maintenance

  3. Machined, full-bore orifice for unobstructed material flow & to maintain convey line pressures

  4. Can be shifted on a flowing column of materials

  5. Positive seal of materials & dusts across the closed port(s) and to atmosphere

  6. Mechanically self-cleans its seals with each actuation

  7. No pinch points or exposed moving point for safety

  8. No internal cavities to prevent wedging, lodging & spoilage

  9. Narrow profile for limited space applications

Live Loaded, wear compensating hard
polymer pressure plate seals
Shimming system for
in-line maintenance
Machined, full-bore orifice for unobstructed material flow and to maintain convey line pressures

Tech Specs

Model No.


Conveyance Type

Gravity flow & dilute phase pneumatic conveying applications. Can handle differential pressures up to 15 psig | 1 barg | 0.1 MPa, depending on gate size. Can be used in pressure or vacuum systems.

Materials Handled

Non-abrasive to moderately abrasive powders, pellets and granules. Modifications available for handling corrosive materials and/or for wash-down.

Standard Sizes

2 – 12 in | 50 – 305 mm ID & OD diameters are available. Also available in schedule 10, 20 or 40 pipe sizes.

Inlet & Outlets

Available in round sizes.

Overall Height

11 – 43 in |  280 – 1,085 mm


20 – 450 lb | 10 – 205 kg

Outlet Angle Options

30° or 45° from center Contact us for custom angles

Connection Options

Compression couplings, ANSI #125/150

Material Temperatures

180° F | 80° C for standard gate, with modifications that allow up to 400° F | 205° C

Body/Frame Options

Aluminum, 304 or 316L stainless steel, carbon steel

Weldment Options

Aluminum, 304 or 316L stainless steel, carbon steel

Material Contact Options

Aluminum, 304 or 316L stainless steel, carbon steel

Pressure Plate Options

Nylon, PET, UHMW, glass-filled PTFE

Load Seal Options

Natural rubber and/or silicone rubber


Double-acting air cylinder, hand wheel/crank, chain wheel, electric actuator

Position Confirmation

Magnetic reed, proximity or mechanical limit switches, and/or clear bonnet cover for visual indication

Other Options

Ceramic backing, ceramic/epoxy coating, or reinforced inlet weldment, Sealed body air purge


ATEX Zone 20 (internal), ATEX Zone 21 (external), FDA



Material / metal contact is 316L stainless steel.


Diverter has straight through conveying line designed for easier “in line” installation and less system conveying pressure drop when using multiple diverters.


Standard tube size diverters are made with schedule 10 pipe throughout.


Standard tube size diverters are made with schedule 40 pipe throughout.


Modifications are made allowing 250°F (121°C) continuous to 300°F (149°C) intermittent service.


Modifications are made allowing 400°F (204°C) continuous to 450°F (232°C) intermittent service.


Gate blade is electropolished. Polyethylene (PET or UHMW) pressure plate seals are used to replace nylon.


Inlets and outlets are flanged with ANSI, DIN or JIS connections. The outlet opposite the air cylinder is offset at 30 or 45 degrees.


Options for the Wye Line Diverter. Two-way, Two-way straight Leg, Three-way, Four-Way.

Power of Comparison

Vortex Wye-Line Diverter vs. Alternatives

• Many alternative pneumatic diverters rely on soft rubber seals which are directly exposed to the material flow stream. These seals rapidly erode or tear away in service, as a result of blast abrasion. Such deficiencies promote leakage of air, materials and dusts through the valve and to atmosphere, in addition to actuation issues and several other maintenance concerns. The Vortex® Wye Line Diverter™ eliminates these issues by using "live loaded" hard polymer pressure plate seals. Hard polymer provides greater wear resistance and longer service life than alternative sealing materials. The hard polymer seals are "live loaded" with compressed rubber backing to ensure even as the polymer experiences frictional wear from many actuations over time, the rubber load seals continuously force the polymer seals against the blade. The seals are also shielded from the material flow stream, to protect them from blast abrasion. This design maintains the diverter's positive seal without frequent maintenance intervention.

• Plug diverters are prone to seizing and binding, as a result of material build-up in the clearances between the rotating plug and the diverter’s housing. The Vortex Wye Line Diverter’s sliding blade design mechanically self-cleans materials away from the sealing surfaces with each actuation. This prevents material build-up, reduces seal wear and ensures positive valve closure.

• Plug diverters are constructed primarily from bulky, heavy cast iron, making them costly to install or remove for maintenance. The Vortex Wye Line Diverter is lightweight and narrow profile, making it well-suited for difficult installations.

• In order to shift ports when using a plug diverter, the internal plug must be rotated approximately 150 °. This is often a timely process. Before the internal plug is rotated, the system’s blower must be temporarily deactivated. Otherwise, the plug will create back pressure as it rotates. With an average actuation time of 2 – 6 seconds, the Vortex Wye Line Diverter can be shifted without shutting down the system's blower and without creating back pressure.

• Many alternative pneumatic diverters have blade(s) and seals which are directly exposed to the material flow steam, creating wear. The exposed blade(s) and seals also disrupt convey line pressures and material flow as they pass through the valve, which can cause bridging, line plugs and other maintenance concerns. To resolve these issues, the Vortex Wye Line Diverter’s sliding blade is machined with an unobstructed, full-bore orifice that maintains convey line pressure and allows unrestricted material movement.

• The Vortex Wye Line Diverter creates a naturally occurring high-pressure airfoil that deflects errant materials away from the closed port(s) and back into the material flow stream. Also, with each purge cycle, the Wye Line Diverter forces residual materials downstream. This design prevents material cross-contamination to the opposite port(s).

• Alternative pneumatic diverters can significantly shear materials, as a result of jamming and grinding materials into the seals. Sheared materials cause seal wear, material degradation and damaged product quality. Sheared materials may also wedge in the seals, causing the diverter to seize and bind. To prevent these issues, the Vortex Wye Line Diverter's "scissoring" action tapers off material flow as it shifts between ports. In doing so, the service life of the pressure plate seals is also extended.

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