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Cast Iron Full Lug Butterfly Valve
**Model No.:** D71
**Working Temperature:** Medium Temperature (120°C < T < 450°C)
**Seal Surface Material:** Soft Sealed
**Valve Body:** Cast Iron
**Application:** Industrial, Water Treatment, and Household Use
**Type:** Full Lug Butterfly Valve
**Design & Manufacturing Standards:** API 509, DIN 3202
**Pressure Rating:** ASME B16.34
**Face-to-Face Dimension:** API 509, DIN 3202
**End Connections:** Wafer, Lug, or Flanged
**Inspection & Testing:** API 598
**Certifications:** DNV CE 0575, ISO 9001:2008, API 600, API 6D
**Trademark:** VATAC / OEM
**Packing:** Sea-worthy wooden crates, customized as per customer requirements
**Specifications:** Available in API, ANSI, ASME, DIN, JIS, GB, and more
**Origin:** China
**HS Code:** 84818040
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**Product Description:**
This Cast Iron Full Lug Butterfly Valve is designed for a wide range of industrial applications, including water treatment, sewage systems, and general industrial use. It is built to withstand high temperatures and offers reliable performance under demanding conditions.
**Key Features:**
- Unique stem hole design ensures a dry stem journal for long-lasting operation.
- 360-degree polished disc provides a tight shut-off with no leakage.
- Long service life, capable of thousands of opening and closing cycles.
- Excellent sealing performance with bubble-tight closure under pressure tests.
- Wide material selection suitable for various media types.
**Packing & Delivery:**
- Standard packaging: Wooden crates, suitable for long-distance sea shipment.
- Custom packaging available upon request.
- Delivery time: 15–30 days after receipt of L/C or 30% advance payment via T/T.
**Technical Specifications:**
- **Size Range:** DN25 – DN1200 (1" – 48")
- **Pressure Class:** PN10/16 (150/200 psi)
- **Actuators Available:** Manual handle, gear box, pneumatic, or electric
- **Standards:** API, ASTM, ANSI, DIN, BS, JIS, ISO approved
- **End Connections:** Wafer type, flange type, or lug type
**Material Details:**
| Main Part | Materials |
|----------|-----------|
| Body | Cast Iron (A126 B, GG25, FC20), Ductile Iron (A536, A395, GGG40, GGG50) |
| Disc | Ductile Iron, CF8, CF8M, CF3, CF3M, Alum-Bronze |
| Stem | SS410, SS420, SS416, SS304, SS316, Monel |
| Seat/Ring| NBR, EPDM, PTFE |
| Packing | Graphite, PTFE |
| Gasket | SS304 + Graphite |
| Suitable Media | Water, Wastewater, Sewage |
| Operating Temperature | -29°C to 150°C |
This valve is ideal for applications where durability, reliability, and tight sealing are essential. It is manufactured to meet international standards and is suitable for both domestic and industrial environments.