Resilient Seated Gate Valve with Bubble-Tight Sealing Low Operating Torque and PN 16 Pressure Rating in Ductile Iron
Price:
Negotiable
MOQ:
Negotiable
Delivery Time:
Negotiable
Brand:
YOUWEI
Product Description
Product Overview
The Resilient Seated Gate Valve (PN 16, F4) is a high-performance bidirectional sealing valve designed for isolation service across diverse piping applications. Constructed from ductile iron (GGG-40/50 per EN-GJS-500-7/EN 1563), it delivers optimal strength, durability, and corrosion resistance. The elastomer-encapsulated wedge ensures bubble-tight sealing, low operating torque, and reliable performance in water, wastewater, and other neutral media.
Key Features & Benefits
- Bubble-Tight Sealing: Fully encapsulated resilient wedge provides excellent sealing integrity in both flow directions, minimizing leakage risk
- Low Operating Torque: Non-lubricated resilient seal design reduces friction for easier operation, even after prolonged inactivity
- Ductile Iron Construction: Superior tensile strength and impact resistance with excellent pressure-bearing capability
- Full Bore Design: Minimal pressure drop when fully open, ensuring efficient system flow and reduced pumping costs
- PN 16 Pressure Rating: Suitable for maximum working pressure of 16 bar (1.6 MPa / 232 psi) at 20°C (68°F)
- F4 Face-to-Face Dimension: Compliant with EN 558-1 Series 4 / ISO 5752 for direct interchangeability
- Corrosion Protection: Standard epoxy coating (approx. 250 µm) per EN 14901 for internal and external protection
- Fire-Safe Option: Available with API 607/API 6FA or ISO 10497 fire-test compliance
Technical Specifications
| Design & Manufacturing Standards | EN 1171, ISO 5208 (Leakage Rate A), EN 1074-1/-2, ISO 17292 (optional) |
|---|---|
| Pressure Rating | PN 16 (Standard), Class 125 available upon request |
| Size Range | DN 50 (2") to DN 600 (24") - typical range |
| Body & Bonnet Material | Ductile Iron, grade GGG-40/50 (EN-GJS-500-7) |
| Wedge (Disc) | Ductile Iron, fully encapsulated in EPDM or NBR elastomer (standard) |
| Stem | Stainless Steel (AISI 430 or equivalent) with anti-blowout design |
| Seat | Integral with body; encapsulated wedge seals against precision-machined body bore |
| Gasket & Packing | NBR or EPDM standard, other materials available |
| Operators | Handwheel standard, gear operator recommended for sizes ≥ DN 300, electric/pneumatic/hydraulic actuators available |
Sealing Elastomer Options
EPDM
Standard for water, steam (<120°C), weak acids/alkalis, alcohols. Excellent weathering and aging resistance.
NBR
Standard for oils, fuels, and hydrocarbons. Good abrasion resistance.
FKM/FPM (Viton®)
For aggressive chemicals, high-temperature services (up to ~180°C), and aromatics. Fire-safe versions available.
CR (Neoprene)
Good all-around resistance, ideal for seawater and mild chemical services.
Applications
Potable Water Distribution
Wastewater & Sewage Treatment
Fire Protection Systems
Irrigation & Water Management
Industrial Process Water
Cooling Water Systems
Chemical & Petrochemical Industries
Power Generation
Installation & Operation Notes
Important: Designed for fully open or fully closed service only. Not recommended for throttling or flow control.
Install with stem orientation upwards (preferred) or horizontal. Verify specific design for vertical stem-down installation.
Always depressurize pipeline before operating the valve.
Regular functional exercise recommended for valves in standby service to maintain operational readiness.
Ordering Designation
Example ordering code format:
RSGV - DN300 - PN16 - DI - EPDM - F4 - HW
(Resilient Seated Gate Valve, Size DN300, Pressure PN16, Ductile Iron Body, EPDM Seal, Face-to-Face F4, Handwheel Operated)
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
SuZhou YouWei Fluid Technology CO., LTD
Location
No.28 Datong road, Suzhou, China, 215000
Contact Person
Li