BS5163 Type A NRS Underground Cap Gate Valve
Product Summary: This valve is designed for underground water supply and drainage systems, featuring a non-rising stem and cap structure. Manufactured in ductile iron (GGG50/QT500-7) with full wrapped EPDM rubber sealing, ensuring corrosion resistance and zero leakage. Available in sizes DN50-DN600, pressure ratings PN10/PN16, conforming to BS5163 standard.
Key Selling Points
- Zero Leakage Seal: Full wrapped EPDM rubber wedge provides bubble-tight shut-off, ensuring reliable isolation in water networks.
- Underground Cap Design: Cap structure protects the stem and prevents unauthorized operation, ideal for buried service.
- Corrosion Resistant: Ductile iron body (GGG50/QT500-7) with fusion bonded epoxy coating (FBE) ≥250μm for long service life in aggressive soils.
- Standard Compliance: Manufactured to BS5163, ensuring dimensional interchangeability and quality assurance.
- Wide Size Range: DN50 to DN600 covers diverse pipeline requirements, reducing inventory needs.
- Low Maintenance: Non-rising stem design minimizes moving parts, reducing maintenance frequency.
Technical Specifications
| Parameter | Value |
|---|
| Size Range | DN50-DN600 |
| Pressure Rating | PN10/PN16 |
| Design Standard | BS5163 |
| Structure | NRS / Underground Cap |
| Sealing | Full wrapped EPDM rubber |
| Body Material | GGG50 / QT500-7 ductile iron |
| End Connection | Flanged (typical) |
Models and Options
Available in BS5163 Type A (flat face) and Type B (raised face) configurations. Also available as DIN 3352 F4/F5 models and Z45X-16Q cap type. Custom pressure ratings and end connections can be supplied.
Materials and Structure
The valve body and bonnet are made of GGG50 or QT500-7 ductile iron, providing high strength and impact resistance. The wedge is fully encapsulated with EPDM rubber, ensuring a tight seal and resistance to corrosion. The stem is made of stainless steel (or equivalent) to prevent corrosion in buried environments. The cap is cast iron with a rubber-sealed handwheel opening for easy operation.
Applications
Primarily used in municipal underground water supply, roadside drainage, and residential water supply systems. Also suitable for clean water, drinking water, rainwater, and fire water pipelines. The cap type design makes it ideal for buried service where valve access is limited.
Customization
Custom sizes, materials, pressure ratings, and coatings (e.g., FBE) are available upon request. We can also provide extended stems for deep burial applications and special operation modes (manual, electric, pneumatic).
Case Study
In Colombia, a project contractor purchased 480 units of this valve for architectural and water projects. They reported excellent product quality and established a deep cooperative partnership, placing multiple orders annually. The product received excellent reviews in the Colombian market for its reliable quality and competitive pricing.
FAQ
What is the difference between Type A and Type B?
Type A has a flat face flange, while Type B has a raised face flange. Both meet BS5163 standard with identical performance.
Can this valve be used for potable water?
Yes, the EPDM rubber sealing is suitable for drinking water applications, meeting WRAS standards.
What is the maximum burial depth?
With an extended spindle, the valve can be operated from ground level for deep burial installations.
What is the pressure rating?
Available in PN10 and PN16, suitable for low and medium pressure water networks.
Do you provide electric actuators?
Yes, the valve can be fitted with electric or pneumatic actuators for remote operation.
What is the minimum order quantity?
Please contact us for MOQ details.
How does the cap structure work?
The cap encloses the valve stem and is sealed with rubber, providing protection and preventing tampering.
Inquiry Information
For more details, please contact:
Name: Anna
Email: contact@weizidom.com
Tel: +86 17319732766
WhatsApp: +86 17319732766
Address: No.999, Zhengxin Expressway, Zhengzhou City, Henan Province, China
Image Filename and Alt Suggestions
- File: bs5163-type-a-underground-gate-valve-warehouse.png
- Alt: BS5163 Type A underground gate valve with cap, ductile iron, DN200
- File: bs5163-type-a-valve-sealing-surface.png
- Alt: EPDM fully encapsulated wedge of BS5163 gate valve
- File: bs5163-type-a-valve-dimension.png
- Alt: Dimension drawing of BS5163 Type A underground cap gate valve
