DN900 PN16 DI Double Eccentric Butterfly Valve With Worm Gear
| Model NO | D342X |
|---|---|
| Media | Water |
| Work Pressure | Low Pressure (Pn<1.6mpa) |
| OEM&ODM | Customer Request |
Product Description
D342X DN900 PN16 Double Eccentric Ductile Iron Butterfly Valve
The TWT D342X DN900 PN16 Double-Eccentric Butterfly Valve is a heavy-duty, high-performance fluid control valve engineered specifically for large-diameter municipal waterworks, industrial pipelines, and cooling water systems. Manufactured with a resilient GGG40/GGG50 ductile iron body, a double-offset disc structure, and an epoxy-coated finish, this 36-inch (DN900) valve provides reliable bubble-tight sealing, low operating torque, and long-term corrosion resistance.
Key Features & Performance Advantages
- Double-Offset Eccentric Design: Reduces disc friction against the resilient seat during opening and closing, extending sealing ring service life and lowering operational torque requirements.
- Resilient Rubber Sealing: Features a replaceable EPDM/NBR seal ring secured by a stainless steel retention ring, ensuring zero-leakage performance under bi-directional pressure up to PN16 (1.6 MPa).
- Heavy-Duty Ductile Iron Construction: High-tensile ASTM A536 / GGG40 body with fusion-bonded epoxy coating offers high mechanical strength and excellent resistance to sea water and chemical exposure.
- Low Head Loss & Energy Efficiency: Optimized hydrodynamic disc shape ensures smooth flow, minimizing pressure drop and lowering system pumping energy costs.
- Smooth Worm Gear Actuation: Equipped with a precision IP67-rated manual worm gearbox for effortless opening/closing; easily adaptable to electric or pneumatic actuators via ISO 5211 top flange mounting.
Specific Technical Specifications (DN900 / Model D342X)
| Parameter Item | DN900 Model D342X Technical Specification |
|---|---|
| Model Number & Type | D342X Double-Eccentric Flanged Butterfly Valve |
| Nominal Diameter (Size) | DN900 / 36 Inch |
| Nominal Pressure Rating | PN16 (1.6 MPa / Class 150 compatible) |
| Design & Manufacturing Standards | EN 593 / API 609 / BS 5155 / DIN 3354 |
| Face-to-Face Dimensions | EN 558 Series 13 (DIN 3202 F4) |
| Flange Connection Standard | EN 1092-2 PN16 / ASME B16.1 Flanged Ends |
| Inspection & Pressure Testing | EN 12266-1 / API 598 / ISO 5208 |
| Top Actuator Flange | ISO 5211 Direct Mounting Pattern |
| Operating Temperature Range | -10°C to +120°C (EPDM Seat) / -10°C to +80°C (NBR Seat) |
| Surface Protection | Fusion-bonded epoxy coating (250 µm thickness, RAL 5005 / RAL 5015) |
| Operation Method | Worm Gearbox with Handwheel (Optional Electric/Pneumatic Actuator) |
| Applicable Media | Potable water, raw water, sewage, industrial cooling water, sea water, and non-corrosive liquids |
Standard Material Construction Matrix
| No. | Component Name | Standard Material Grade |
|---|---|---|
| 1 | Valve Body | Ductile Iron ASTM A536 65-45-12 / EN-GJS-400-15 (GGG40) / GGG50 |
| 2 | Valve Disc | Ductile Iron (GGG40/GGG50) / Aluminum Bronze / Duplex SS (Optional) |
| 3 | Stem / Shaft | Stainless Steel 304 / 316 / 416 / 431 / Duplex SS |
| 4 | Body / Disc Sealing Ring | Resilient EPDM (Potable Water Grade) / NBR (Oil/Gas Grade) |
| 5 | Retaining Steel Ring | Stainless Steel 316 |
| 6 | Shaft Bushing & Packing | Self-lubricating DF-1 Bushing / NBR O-Rings |
| 7 | Hardware & Fasteners | Stainless Steel 304 / Grade 8.8 High Tensile Steel |
Applications & Factory Assurance
The TWT DN900 PN16 double eccentric butterfly valve is widely installed in municipal water supply mains, thermal power plant cooling circuits, desalination plants, and water treatment facilities. Backed by 65 years of valve manufacturing history, TWT offers an 18-month warranty and complete ISO/CE/BV material testing certification for every exported unit.
Need dimensional CAD drawings, pressure test certificates, or a bulk quote for DN900 PN16 double eccentric butterfly valves? Request a direct factory quotation or contact our valve engineering experts today.
Company profile
FAQ
Q1.Whether it is a factory?
A:yes we are valve manufacture since 1956 have more than 60 years valve production experience
Q2.Can i have any own customized product?
A:yes you are customized requirements for standard,size,colour,packing,nameplate,mark,etc
Q3.Do you provide samples?
A:yes we can provide the samples but do not pay the charge of freight
Q4.What’s your terms of payment?
A:30% in advance 70% balance before shipment
Q5.Is there any testing equipment
A:Yes, we have pressure testing equipment, and large-scale laboratories and non-destructive testing equipment
