Dual Diverter Gate Valve (DDGV)
Dual Diverter Gate Valve (DDGV)
Dual’s Diverter Gate Valve has a Stainless Steel gate machined with a round orifice port, in line with seat ID when the valve is in the open position. When the valve is closed the ported gate will move sideways sealing the one port and opening the other. Due to the seal being constantly engaged against the gate, stroking the valve closed forces the gate progressively between the two matching sleeve ends until it reaches the fully closed position – at which point the sleeves each butt up tightly against either side of the gate, effectively sealing and completely containing the line pressure. Build up of material to prevent full gate travel is eliminated as there are no areas for such material to accumulate. Any material discharged between the sleeves during stroking open or closed is collected within the containment area of the valve body and drained via multiple flushing ports in the body. The Ported Gate Valve can be used as a man-safe line blanking valve.
DDGV Features
240 Psi (16 Bar).
Double seat design for heavy duty slurry service.
Ease of replacement of elastomer sleeves.
Material construction options available.
Quick installation.
Self cleaning.
Bubble tight shutoff, zero downstream leakage.
No clogged bonnet to impede flow.
External epoxy coated.
Low maintenance requirements.
As the valve strokes, the seats will clean the gate of material.
Bi-directional flow.
Packingless design.
The gate can be fluorocarbon coated to eliminate scale build-up.
No seat cavity where solids can collect and prevent full gate closure.
Open/close indicator.
Lifting Lugs.
Lock out feature.
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OPERATING TEMPERATURES: |
90C Maximum. |
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BODY TYPE: |
Flanged or Wafer Pattern Steel, Epoxy coated. |
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PRESSURE RATING: |
DN80 to DN600 rated to 240Psi (16 Bar) using 316SS gate.
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RETAINER FLANGES: |
316 or 304 Stainless Steel. |
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ELASTOMER SLEEVES: |
Urethane. |
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GATE MATERIAL: |
316 Stainless Steel standard – 316L, 317L, 17-4PH, Alloy 20, SAF 2205 S/S with optional wear coatings. |
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DRILLING PATTERNS: |
DN50 to DN1500 drilled and tapped ASME B16.5, DIN, SABS & BS Optional. |
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MATERIAL CERTIFICATION: |
Certified chemical and physical test reports can be supplied. |
Head Office
166 Rotterdam Road, Apex Industrial, Benoni, Gauteng, South Africa
Call Us
(+27) 11 422 – 4326/7