Wholesale Underground gate valve ductile iron body and EPDM Seat Suppliers, Manufacturers
Product Description
Technical Specifications
| Valve Type: | Resilient seat gate valve | Structure: | Non-rising type |
| Standard: | DIN F4 | Workmanship: | Investment casting |
| Sealing direction: | Bidirectional | Sealing grade: | Zero leakage |
| Temperature: | -20°C < T < 120°C | Operation: | Handwheel |
Characteristics
This underground square head gate valve is made of anti-corrosion ductile iron with epoxy coating, suitable for underground pipeline installation. Extended stem with square operating head enables easy operation without large-scale digging. Soft seal design provides reliable zero leakage, full bore reduces flow resistance. It is widely used for buried municipal water supply, fire protection and irrigation pipelines with stable long-term performance.
Key Advantages
Extended stem with square operating head allows easy on-site operation without digging large areas, greatly cutting maintenance construction cost for buried pipelines.
Ductile iron body coated with epoxy resin resists soil moisture and corrosion, anti-settlement and pressure-resistant for long-term underground service.
Soft seal gate ensures tight zero leakage; full bore design brings low flow resistance for efficient water delivery in water supply and fire-fighting systems.
Material Specifications
| Part Name | Material |
|---|---|
| Valve body, bonnet | Cast iron, ductile iron, cast steel |
| Valve stem | Stainless steel |
| Stem nut | Brass alloy |
| Seal ring | NBR, EPDM |
| Hand wheel | Malleable iron |
Dimensions
Packaging Details
Standard export wooden case packaging
Application Scenarios
The underground gate valve is used in buried municipal water supply pipelines, residential underground water pipes, buried fire mains, urban-rural drainage and irrigation underground pipelines.
Frequently Asked Questions (FAQ)
A resilient seat gate valve utilizes an elastomer-encapsulated wedge (NBR or EPDM) that seals tightly against the valve interior, providing bubble-tight, zero-leakage performance for water systems.
An extended stem with a square head allows operators to conveniently control the buried valve from the ground surface using a key wrench, eliminating the need for costly deep excavation during operation.
The fusion-bonded epoxy coating offers high resistance to soil corrosion, moisture, and chemical attack, ensuring maximum durability and long service life in buried underground environments.
Yes, the resilient seat design enables reliable bidirectional sealing, ensuring zero leakage regardless of the fluid flow direction in the pipeline.
This valve operates effectively within a temperature range of -20°C to 120°C, suitable for standard potable water, fire-fighting, and irrigation networks.
