Flanged Resilient Seated Gate Valve (Non-Rising Stem)
Description
Technical Data Sheet — Flanged Resilient Seated Gate Valve (Non-Rising Stem)
Note: No specific text document was provided for this request. The following Technical Data Sheet is compiled based on the visual markings and physical appearance of the provided images (showing DN 450, PN10/PN16, BS 5163, blue epoxy-coated flanged gate valves with handwheels). Fields are inferred from standard industry specifications for this valve type.
1. General Specifications
| Parameter | Specification |
|---|---|
| Valve Type | Flanged Resilient Seated Gate Valve, Non-Rising Stem (NRS) |
| Size | DN 450 (18″) |
| Pressure Rating | PN10 / PN16 |
| Standard | BS 5163 |
| End Connection | Flanged (RF) |
| Operator | Handwheel |
| Design | Bolted Bonnet, Dome Top, Fully Encapsulated Wedge |
2. Design & Construction
| Item | Details |
|---|---|
| Stem Design | Non-Rising Stem (NRS) |
| Body Design | Straight-way, full bore |
| Bonnet Connection | Bolted Bonnet (Dome type) |
| Wedge Design | Fully encapsulated with rubber (EPDM or NBR) |
| Coating | Fusion Bonded Epoxy (FBE), Blue (standard for water/wastewater) |
| Marking | Body cast with “BS 5163”, “DN 450”, “PN10/16”, and material code |
| Design Standard | BS 5163, EN 1074-1/2, ISO 7259 |
3. Materials of Construction
| Component | Material Specification |
|---|---|
| Body | Ductile Iron GJS-500-7 (GGG-50) |
| Bonnet | Ductile Iron GJS-500-7 (GGG-50) |
| Wedge (Disc) | Ductile Iron core + EPDM / NBR Rubber Encapsulation |
| Stem | Stainless Steel (SS 420 / SS 304 / SS 316) |
| Stem Nut | Bronze / Brass |
| Handwheel | Ductile Iron / Cast Iron |
| Bonnet Bolts | Stainless Steel or Zinc-Plated Carbon Steel |
| Gasket | EPDM / NBR |
4. Performance & Testing
| Parameter | Specification |
|---|---|
| Working Pressure | PN10 / PN16 |
| Working Temperature | -10°C to +80°C (EPDM) / -10°C to +60°C (NBR) |
| Hydraulic Shell Test | 1.5 × PN (per ISO 5208 / EN 12266-1) |
| Hydraulic Seat Test | 1.1 × PN (per ISO 5208 / EN 12266-1) |
| Leakage Class | Zero Leakage (Resilient Seated) |
| Flange Standard | EN 1092-2 (BS 4504) / ANSI B16.1 / B16.5 (Optional) |
5. Dimensions (Reference)
| Size | Face-to-Face (mm) | Flange OD (mm) | Height (mm) | Handwheel Dia. (mm) | Weight (kg) |
|---|---|---|---|---|---|
| DN 450 | [To be confirmed] | [To be confirmed] | [To be confirmed] | [To be confirmed] | [To be confirmed] |
Note: Exact dimensions depend on the specific flange standard (EN 1092-2, ANSI, etc.) and pressure rating (PN10 or PN16). Please confirm with the manufacturer.
6. Applications
-
Water supply and distribution networks
-
Wastewater treatment plants
-
Irrigation and agricultural systems
-
Fire protection systems
-
General industrial fluid isolation (non-corrosive media)
