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China Suppliers Factory Aluminum Handle Operated Lugged Butterfly Valve DN25-DN300 with Various Material Options
⚙️ Features
- Provides a leak‑tight seal under full rated pressure.
- Only the seat and disc are exposed to the flow medium.
- Specifically designed to excel in services involving abrasive or erosive media.
- Includes a field‑replaceable cartridge seat. The seat is composed of a reinforced backing ring with the elastomer vulcanized onto it. Once the valve is installed between pipe flanges, this robust seat resists deformation or shifting. The cartridge construction also avoids issues such as stretching or bending of the elastomer in front of the moving disc during operation.
- Available with numerous material combinations.
- Comes with a standardized actuator flange for easy interchangeability of operators.
- A top bushing accommodates side thrust loads.
- Hub sealing is achieved via preloaded contact between the flattened seat surface and the disc hub, ensuring reliable sealing at any disc position.
- The integral wafer‑thin disc and stem design minimizes flow restriction.
- The seat is field‑replaceable, keeping the body and stem out of the flow path.
- Integral molded O‑rings provide flange sealing, removing the need for separate gaskets.
- Universal mounting flange: The cast‑in actuator flange conforms to ISO 5211 dimensional standards, allowing it to accept a wide range of operators—such as 10-position handle kits, gear operators, electric actuators, and pneumatic actuators.
🔩 Materials Of Main Parts
| ITEM | PART NAME | MATERIAL |
|---|---|---|
| 1 | Body Material | Cast iron / Ductile iron / CF8 / CF8M / WCB / Duplex / Al-Bronze / Aluminium Etc. |
| 2 | Seat Material | EPDM / NBR / Buna / Viton / PTFE / Hypalon / Silicone / Neoprene Etc. |
| 3 | Stem Material | 45# / SS420 / SS410 / SS416 / SS316 / SS304 / Duplex stainless steel Etc. |
| 4 | Disc Material | DI+Ni / CF8 / CF8M / CF3M / Duplex SS / Al-Bronze / DI+Nylon / DI+PTFE / DI Epoxy Etc. |
| 5 | Hand Lever | Malleable iron / Stamping steel / Aluminum / Stainless Steel |
| 6 | Bushing | PTFE / Bronze |
| 7 | O Ring | NBR / EPDM / VITON |
📋 Valve Standard
| Category | Details |
|---|---|
| Type | Lugged |
| Face to Face | API609, EN593, EN558-1 Series 20, DIN3202 K1, ISO5752 |
| Flange Drilling | EN1092 PN6 / PN10 / PN16 / JIS 5K / 10K / ANSI150 / AS Table D/E / SANS |
| Mounting Flange | ISO5211 |
| Pressure Rating | PN10 / PN16 / 150PSI / 200PSI / Class 150 |
| Application | HVAC, Water Supply & Sewage, Food & Beverage, Chemical/Petrochemical Processing, Power and Utilities, Paper and Pulp, Marine |
📐 Dimensions (mm)
🔍 More Details
Tianjin Guoji Valve Co., Ltd. is an export-oriented valve manufacturer with 15,332 square meter factory area, which has strong capability of R&D, Manufacture, Trading and Service. Now our company has passed the Lloyd's Register (LR) ISO9001: 2015 quality management system certification (ISO Approval number: ISO 9001 – 00033059) and CE/PED certification (EU Certificate Of Conformity). (Certificate No: 0343/PED/SHA/BJG00001668/A).
TGV's products covered Butterfly valves, Check valves, Strainers, Gate valves, Ball valves, Globe valves, Expansion joints, Flanges and Fittings with pressure range from 0.5 to 6.4 MPa, size from DN15 to DN3000. The products also have been widely exported to more than 30 countries and regions.
We aim at deliver only quality valves with professional services, we see quality and service as life and always take our reputation and promises seriously.
❓ Frequently Asked Questions (FAQ)
Q1 What is the difference between a lugged butterfly valve and a wafer butterfly valve?
A lugged butterfly valve features threaded inserts (lugs) around its body, allowing it to be bolted directly to a single flange for dead-end service without requiring a downstream flange. A wafer butterfly valve is sandwiched between two flanges using through-bolts. The lugged design provides greater installation flexibility and is suitable for end-of-line applications.
Q2 What seat materials are available, and how do I choose the right one?
Available seat materials include EPDM, NBR (Buna), Viton, PTFE, Hypalon, Silicone, and Neoprene. The correct choice depends on the media being handled and the operating temperature. For example, EPDM is ideal for water and mild chemicals; Viton suits aggressive chemicals and high-temperature applications; PTFE is recommended for corrosive or high-purity media.
Q3 Is the seat field-replaceable, and what are the benefits?
Yes, the cartridge seat is fully field-replaceable. This design keeps the valve body and stem out of the flow path during maintenance, significantly reducing downtime and cost. The reinforced backing ring prevents the elastomer from deforming or shifting once installed between pipe flanges, ensuring long-term sealing reliability.
Q4 What actuator types are compatible with this butterfly valve?
The valve features a universal cast-in actuator mounting flange that conforms to ISO 5211 dimensional standards. This allows it to accept a wide range of operators, including 10-position handle kits, gear operators, electric actuators, and pneumatic actuators, making it highly adaptable for automated or manual control applications.
Q5 What pressure ratings and flange drilling standards does this valve support?
This valve supports pressure ratings of PN10, PN16, 150PSI, 200PSI, and Class 150. It is compatible with multiple flange drilling standards including EN1092 PN6/PN10/PN16, JIS 5K/10K, ANSI 150, AS Table D/E, and SANS, making it suitable for international projects across various industries.
Q6 What industries and applications is this butterfly valve suitable for?
This lug butterfly valve is designed for a broad range of applications including HVAC systems, water supply and sewage treatment, food and beverage processing, chemical and petrochemical processing, power generation and utilities, paper and pulp industries, and marine applications. Its resistance to abrasive and erosive media makes it especially reliable in demanding environments.