Valves & Parts
Ductile Iron Resilient Seat Flanged Gate Valve (Z41X)
Wanlian Z41X Resilient Seated Gate Valve is designed with a fully rubber-encapsulated wedge to ensure a reliable bubble-tight sealing. Ideal for water supply, sewage, industrial pipelines, and HVAC systems.
Key Features
- Resilient wedge fully encapsulated with high-grade EPDM rubber
- Flat bottom design prevents dirt and sediment accumulation
- Non-toxic epoxy resin coating inside and out for corrosion and rust resistance
- Easy maintenance, sealing replacement can be done on-line under pressure
Technical Specifications
- Nominal Diameter
- DN50 - DN700 (2" to 28")
- Nominal Pressure
- 1.0 MPa / 1.6 MPa (PN10 / PN16)
- Working Temperature
- 0°C to 80°C
- Applicable Medium
- Water, Non-corrosive Liquids, Air
- Body Material
- Ductile Iron (QT450-10)
Parts & Materials List
- Body & Bonnet
- Ductile Iron (QT450)
- Wedge/Disc
- Ductile Iron + EPDM Fully Encapsulated
- Stem
- Stainless Steel (2Cr13 / 304)
- Stem Nut
- Bronze Alloy
- O-Rings
- NBR / EPDM Self-tightening
Standard Dimensions Guide
| DN (mm) | L (mm) | D (mm) | D1 (mm) | D2 (mm) | z-Φd (Holes) |
|---|---|---|---|---|---|
| 50 | 180 | 160 | 125 | 100 | 4-Φ18 |
| 80 | 210 | 195 | 160 | 135 | 4-Φ18 |
| 100 | 230 | 215 | 180 | 155 | 8-Φ18 |
| 150 | 280 | 280 | 240 | 210 | 8-Φ23 |
| 200 | 330 | 335 | 295 | 265 | 8-Φ23 |
| 300 | 420 | 440 | 400 | 368 | 12-Φ23 |
Applications
- Water supply & distribution
- Wastewater and sewage networks
- Industrial process pipelines
- HVAC systems
Quality & Testing
100% shell and seat pressure testing per GB/T13927 or EN 12266-1; epoxy resin coating tested for corrosion resistance.
Frequently Asked Questions
What sizes are available for the Z41X resilient seat gate valve?
DN50 to DN700 (2 inch to 28 inch) at PN10 or PN16, covering branch lines up to large transmission mains in water supply, sewage, industrial and HVAC service.
How does the Z41X achieve a bubble-tight seal?
The wedge is fully encapsulated in high-grade EPDM rubber, so sealing does not depend on metal-to-metal contact like a traditional gate valve. The flat-bottom design also prevents sediment buildup at the seat.
Can the Z41X seal be replaced without draining the line?
Yes — the resilient sealing can be replaced on-line under pressure, avoiding costly shutdowns during maintenance.
What media and temperatures can the Z41X handle?
Water, non-corrosive liquids and air from 0°C to 80°C, with a non-toxic epoxy resin coating inside and out for corrosion resistance in potable and industrial networks.
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