A wafer type eccentric rotary plug valve packs the eccentric-plug modulating mechanism into a thin, between-flanges wafer body. The offset spherical plug still rotates with equal-percentage trim and almost no sliding friction against the seat, but the shortened face-to-face length and the absence of separate end flanges shrink the installed footprint and the bolt count. The smooth, dead-space-free bore resists clogging by fine particles and high-viscosity fluid, and the plug-to-seat contact stays tight on slurries that would score a conventional rotary valve. The compact wafer body is clamped by the pipeline flanges and pairs with a pneumatic actuator and positioner for sensitive small-opening control, which suits skid-mounted and space-constrained slurry and viscous-fluid lines.
Compact wafer bodies on small-bore slurry duty rarely match a catalog dimension, so we tune the installation around the buyer's skid. Working from the customer's piping face-to-face, small-bore port and medium viscosity, we size the wafer body, plug bore and seat material, keeping the face-to-face short enough to fit existing equipment while still passing the required slurry flow. This dimension-matched wafer design lets buyers retrofit eccentric-plug modulation into tight food, pharmaceutical and fine-chemical skids without rebuilding the line.
Specifications
|
Parameter |
Specification |
|
Nominal size |
DN25~DN300 |
|
Nominal pressure |
PN16/PN25/PN40 / Class150~300 |
|
Flow characteristic |
Equal percentage |
|
Connection type |
Wafer |
|
Body material |
WCB, 304, 316L, PTFE-lined |
|
Applicable medium |
Slurry, high-viscosity fluid, fine-particle media |
|
Medium temperature |
-30 C ~ 380 C |
|
Leakage class |
Class VI soft seal / Class IV metal seal |
Applications
Coatings and fine-chemical suspension lines.
The pocket-free bore prevents pigment and filler from settling, and the equal-percentage trims provides sensitive dosing of suspended solids at small openings.
Food slurry and pharmaceutical buffer transfer.
With 316L or PTFE-lined wetted parts and a smooth bore, the valve transfers viscous, particle-containing fluids without product hang-up.
Wastewater sludge and lithium-battery slurry on compact skids.
The short wafer face-to-face fits skid-mounted treatment units, and the abrasion-resistant seat handles fine grit without sliding wear.
Customization
- Wafer body with short, drawing-matched face-to-face
- Body material: WCB, 304, 316L or PTFE-lined
- Soft (PTFE) seal or metal seal
- Small-bore port and bore sizing for viscous or slurry media
- Pneumatic actuator and positioner matched to the application
- Drawing- and sample-based production, OEM / ODM accepted
Packaging & Transportation
All valves are packed for standard export shipment. Before dispatch every valve undergoes 100% air and water pressure testing; we share pressure-test videos, packing photos and the packing list with the customer, and complete customs documentation is prepared for export orders.
FAQ
Q1. Can you make special small sizes or special anti-corrosion materials?
A. Yes. We support non-standard sizes and special anti-corrosion bodies to drawing. There is no strict MOQ; for small quantities the customer covers the mold cost, while large orders absorb it.
Q2. Do you provide sample testing?
A. Yes. We charge only the material cost for samples and no extra inspection fee, so buyers can confirm the valve on their own slurry before placing a bulk order.
Q3. How do you guarantee quality?
A. We follow a complete ISO9001 quality system, and every wafer-type eccentric rotary plug valve undergoes 100% pressure testing before dispatch.
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