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Pneumatic Butterfly Valve
The D671J-10C is a pneumatic wafer-type soft-seal butterfly valve body. For DN100, it’s designed for low-to-medium pressure service with compact face-to-face, intended to pair with a double-acting or single-acting pneumatic actuator. Typical soft seats include NBR/EPDM/PTFE, with body options such as ductile iron, carbon steel (WCB), or stainless steel.
• Model: D671J-10C
• Type: Pneumatic wafer soft-seal butterfly valve body
• Nominal diameter: DN100 (4″)
• Pressure rating: PN10 (10 bar); series commonly available up to PN16 depending on configuration
• Service media: Water, air, oil, slurries, and general industrial fluids (seat dependent)
• Temperature capability:
• NBR approx. −9 to +80°C
• EPDM approx. −30 to +120°C
• PTFE approx. −30 to +180°C
• Air supply to actuator (for reference): 2–8 bar (valve body itself is passive)
• Connection style: Wafer/clamped between flanges; typically fits PN10/PN16 (EN 1092-1) drilling on DN100 flanges
• Flow characteristic: Quarter-turn, bidirectional shutoff; bubble-tight achievable with soft seats
• Common sizes in series: DN25–DN1200 (DN100 falls within the standard range)
The “J” in D671J indicates a soft-lined/seated butterfly valve; “10” denotes PN10 class; the “C” is commonly used to indicate a carbon-steel body in some catalogs. Series data supports soft-seat construction and the PN10–PN16 range.
| Specifications | |
| Seal material | Rubber lining |
| brand | Harbin Electric Valve |
| category | Pneumatic butterfly valve |
| Valve Type | Butterfly valve |
| Material | carbon steel |
| Connection size | DN100 |
| Connection method | Wafer |
| Working pressure (KG) | 1.0 |
Material list:
• Body: QT450 ductile iron or WCB carbon steel; stainless steel (304/316/316L) available for corrosion resistance
• Disc (valve plate): Ductile iron with coating, or stainless steel (304/316/316L). Higher alloys and copper options exist in wider series offerings
• Stem (shaft): Stainless steel (typically 304/316) for strength and corrosion resistance
• Seat/lining: NBR or EPDM for general service; PTFE for higher chemical/temperature resistance; hard alloy seat options exist for high-temperature variants in the broader series
• Bushing/bearing: PTFE or engineering polymer (typical for soft-seal wafer valves)
• Fasteners: Stainless steel or plated carbon steel (application dependent)
The soft-seal construction with EPDM/NBR seats and DI/SS trims is explicitly described for D671X/D671J pneumatic wafer valves; the broader D671J-10 data enumerates body and trim material options including QT450, WCB, and stainless variants
Drawing and typical dimensions (DN100, PN10 wafer):
- Face-to-face (wafer body thickness): ~52 mm
- Disc diameter (approx.): ~200–210 mm
- Top works interface: ISO mounting pad common on actuator-ready bodies (pattern varies by supplier)
- Flange compatibility: Fits between PN10/PN16 DN100 flanges (EN 1092-1). Typical mating flange data for DN100: PCD ~180 mm, 8 × bolt holes (user flange dependent).
- Body OD across wafer section: ~155–165 mm
Dimensions above are typical for DN100 wafer soft-seal butterfly valves and help with piping space checks. For fabrication or BIM/CAD, request the vendor GA drawing for the exact variant. Series-level info confirms wafer/clamping connection and actuator options.
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