Metal-Seated Gate Valve
Metal-seated gate valve with ductile iron body and manual handwheel for reliable on/off flow isolation in raw water, potable water, and industrial piping.
- Rugged ductile iron body engineered for elevated pressure tolerance and long service life
- Metal-to-metal seating (bronze or stainless steel trim) resilient against abrasive suspended solids
- Flanged end connections fully conforming to EN 1171 industrial valve standards
- Stainless steel stem with rolled threads providing smooth actuation with low operating torque
- Available in nominal pressure ratings PN10 and PN16 for high-head transmission mains
Key Specifications
- Product code
- P109
- Reference standard
- EN 1171
- Material & grade
- Ductile iron
- Nominal diameter
- DN32 to DN400
- Nominal pressure (at 20 °C)
- PN10 to PN16
- Joint type
- Flanged
- Unit of sale
- Piece
- Applications
- Drinking water supply, Irrigation & agriculture, Industrial
- Dimensional options
- 24 rows in the specification table
Technical design and benefits of metal-seated gate valves
The metal-seated gate valve is an established standard in municipal bulk water conveyance, irrigation trunk lines, and raw water extraction. Sealing is accomplished through tight wedging of precision-machined metal trim rings mounted on the wedge and body (typically bronze or stainless steel). This metallic trim provides superior resistance to scoring and erosion from suspended silt and grit compared to resilient-seated designs.
Governed by EN 1171 standards for industrial cast valves, the ductile iron body provides exceptional resistance to water hammer surges and mechanical pipe stress. The full-bore straight-through flow passage ensures minimal hydraulic head loss when fully open.
Size spectrum and maintenance guidelines
Metal-seated gate valves are typically supplied across nominal diameters from DN32 up to DN400, rated at PN10 and PN16 operating pressures, equipped with manual handwheels.
Gate valves are strictly intended for on/off isolation and must not be used for throttling flow in partially open positions, which can cause severe wire-drawing and trim cavitation. Please detail your required nominal sizes (DN) and pressure classes (PN) in our RFQ form for formal proposals.
Metal-Seated Gate Valve — Technical Specifications
Wall thickness and weight are calculated from the standard series and are approximate; final values are confirmed in the quotation.
| Nominal Diameter | Nominal Pressure (bar) |
|---|---|
| DN32 | 10 |
| DN32 | 16 |
| DN40 | 10 |
| DN40 | 16 |
| DN50 | 10 |
| DN50 | 16 |
| DN65 | 10 |
| DN65 | 16 |
| DN80 | 10 |
| DN80 | 16 |
| DN100 | 10 |
| DN100 | 16 |
| DN150 | 10 |
| DN150 | 16 |
| DN200 | 10 |
| DN200 | 16 |
| DN250 | 10 |
| DN250 | 16 |
| DN300 | 10 |
| DN300 | 16 |
| DN350 | 10 |
| DN350 | 16 |
| DN400 | 10 |
| DN400 | 16 |
Metal-Seated Gate Valve — FAQ
What sizes are commonly manufactured for metal-seated gate valves?
These valves are typically produced across nominal diameters from DN32 to DN400 with PN10 and PN16 pressure ratings.
What is the functional difference between metal and resilient seats?
Metal seats resist abrasion from suspended sand, grit, and raw water solids much better than elastomeric seals.
Can this valve be used for flow throttling or modulation?
No, gate valves are engineered exclusively for full-open or full-closed service; throttling induces rapid seat erosion.
How is the valve connected into the pipeline?
The valve features standard raised-face flanged ends bolted to mating pipe flanges with standard studs and gaskets.
