Sanitary U-type Three way Diaphragm Valve
KINGMAN supplies sanitary U-type three-way diaphragm valves. Designed with dedicated U-shaped three-way flow channel, one valve body can realize fluid diversion, mixing or switching, reducing welding points and dead corners of pipelines. The polished 316L stainless steel valve body uses diaphragm to isolate media and avoid cross-contamination between different fluids, supporting CIP/SIP in-place sterilization. Mostly applied in pharmaceutical batching and bioprocess pipeline switching. It reduces fitting quantity and dead volume. Welded or clamp connections are optional, and manual or pneumatic actuation can be selected on demand.
Specifications
| Parameter | Value |
|---|---|
| Product Type | Sanitary Diapharagm Valve |
| Size Range | DN15–DN100 (approx. 1/2"–4") |
| Body & Disc Material | 316L stainless steel |
| Seal Material | EPDM / EPDM+PTFE |
| Surface | Inner surface: Ra ≤0.5μm (SF1), Ra ≤0.375μm (SF4) , Outer surface: Sand blasting |
| Working Temperature | 150 °C |
| Max. Working Pressure | Max 10 Bar for DN15‑DN50; Max 6 Bar for DN65‑DN80 |
| Min. Working Pressure | Full vacuum (with EPDM seal) |
| Connection Standard | 3A / SMS / DIN / ISO /ASME BPE |
| Connection Type | Tri-Clamp / Weld / Threaded / Flange (please confirm) |
| Operation Type | Manual handle / Pneumatic actuator |
| Certification | ISO 9001, 3A,CE,EAC,health wading license |
Diaphragm
Different from the traditional diaphragm valve body, the aseptic diaphragm valve body has a sealing protrusion that tightly snaps on the inner diameter, which can reduce the annular gap between the diaphragm and the valve body. This feature of the diaphragm valve makes it particularly suitable for aseptic processe.
Diaphragm Material
Diaphragms are available in EPDM rubber and TFM rubber, with single and double diaphragms optional. The dual diaphragm design allows the two diaphragms to operate independently,which reduces tension caused by different thermal properties. Each application has different operating conditions and therefore different requirements for the diaphragm. To select the diaphragm that is best for you, consider the following factors: operating pressure, application temperature, process fluid. EPDM can be suitable for most application conditions, and some high-temperature conditions require the use of TFM material diaphragms.
Dimensions
DIN Standard
| Material Code | Size | D | Do | Dn | Do1 | t | L | L1 | H | E | F |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DMU6DINCCCHW6LEPP020020 | DN20/20 | 25.2 | 19.1 | 15.8 | 19.1 | 1.65 | 54 | 68 | 130 | 30 | 110 |
| DMU6DINCCCHW6LEPP020025 | DN20/25 | 25.2 | 19.1 | 15.8 | 25.4 | 1.65 | 68 | 70 | 149 | 30 | 110 |
| DMU6DINCCCHW6LEPP020040 | DN20/40 | 25.2 | 19.1 | 15.8 | 38.1 | 1.65 | 87 | 77 | 187 | 30 | 110 |
| DMU6DINCCCHW6LEPP020050 | DN20/50 | 25.2 | 19.1 | 15.8 | 50.8 | 1.65 | 110 | 83 | 225 | 35 | 120 |
| DMU6DINCCCHW6LEPP025025 | DN25/25 | 50.5 | 25.4 | 22.1 | 25.4 | 1.65 | 68 | 82 | 171 | 30 | 134 |
| DMU6DINCCCHW6LEPP025040 | DN25/40 | 50.5 | 25.4 | 22.1 | 38.1 | 1.65 | 87 | 92 | 209 | 30 | 134 |
| DMU6DINCCCHW6LEPP025050 | DN25/50 | 50.5 | 25.4 | 22.1 | 50.8 | 1.65 | 110 | 95 | 247 | 35 | 144 |
| DMU6DINCCCHW6LEPP025065 | DN25/65 | 50.5 | 25.4 | 22.1 | 63.5 | 1.65 | 132 | 100 | 285 | 35 | 144 |
| DMU6DINCCCHW6LEPP032032 | DN32/32 | 50.5 | 31.8 | 28.5 | 31.8 | 1.65 | 78 | 108 | 217 | 30 | 162 |
| DMU6DINCCCHW6LEPP032040 | DN32/40 | 50.5 | 31.8 | 28.5 | 38.1 | 1.65 | 87 | 111 | 236 | 30 | 162 |
| DMU6DINCCCHW6LEPP032050 | DN32/50 | 50.5 | 31.8 | 28.5 | 50.8 | 1.65 | 110 | 114 | 274 | 35 | 172 |
| DMU6DINCCCHW6LEPP032065 | DN32/65 | 50.5 | 31.8 | 28.5 | 63.5 | 1.65 | 132 | 120 | 312 | 35 | 172 |
| DMU6DINCCCHW6LEPP040040 | DN40/40 | 50.5 | 38.1 | 34.8 | 38.1 | 1.65 | 87 | 111 | 236 | 30 | 162 |
| DMU6DINCCCHW6LEPP040050 | DN40/50 | 50.5 | 38.1 | 34.8 | 50.8 | 1.65 | 110 | 114 | 274 | 35 | 172 |
| DMU6DINCCCHW6LEPP040065 | DN40/65 | 50.5 | 38.1 | 34.8 | 63.5 | 1.65 | 132 | 120 | 312 | 35 | 172 |
| DMU6DINCCCHW6LEPP050050 | DN50/50 | 64 | 50.8 | 47.5 | 50.8 | 1.65 | 110 | 139 | 296 | 35 | 195 |
| DMU6DINCCCHW6LEPP050065 | DN50/65 | 64 | 50.8 | 47.5 | 63.5 | 1.65 | 132 | 141 | 340 | 35 | 195 |
| DMU6DINCCCHW6LEPP065065 | DN65/65 | 77.5 | 63.5 | 60.2 | 63.5 | 1.65 | 110 | 141 | 340 | 35 | 195 |
| DMU6DINCCCHW6LEPP065080 | DN65/80 | 77.5 | 63.5 | 60.2 | 76.2 | 1.65 | 132 | 141 | 378 | 40 | 205 |
| DMU6DINCCCHW6LEPP080080 | DN80/80 | 91 | 76.2 | 72.9 | 76.2 | 1.65 | 151 | 171 | 448 | 171 | 264 |
Features
- One-piece precision U-shaped three-way body with no welded seams, eliminating structural dead corners.
- Single valve realizes diversion, mixing and fluid switching, replacing multiple valves and fittings to simplify piping layout.
- Independent diaphragm seal for each flow passage to separate different media and effectively prevent cross-contamination.
- Fewer pipe joints and welds reduce dead volume and media residue to save raw materials.
- Welded or clamp connections optional; manual or pneumatic actuation available to fit complex process pipelines.
- High mechanical strength from casting, resistant to pressure and deformation for stable performance under frequent high-pressure switching cycles.
Working Principle
This U-type 3-way diaphragm valve uses two independent diaphragms to control each branch of the U-shaped integrated flow channel. Each diaphragm is operated separately by its actuator. Closing or opening each diaphragm switches the fluid route: diverting flow to different branches, merging multiple incoming streams, or switching between different pipelines. The one-piece cast U-body eliminates internal weld seams. Each flow path is independently sealed by its own diaphragm, so media in different branches never contact each other. By adjusting the status of two diaphragms, a single valve fulfills multi-directional fluid switching, removing the need for multiple separate valves on complex process piping.
Why Choose KINGMAN
Three-Way Geometry Support
U-type three-way diaphragm valve bodies can be reviewed around branch orientation, port spacing and sanitary connections so custom flow paths align more closely with equipment piping.
Precision Body Machining
CNC capability to ±0.005 mm supports critical body and sealing dimensions for multi-port sanitary diaphragm valves where interface consistency affects assembly and shutoff performance.
Custom Orders in 7–15 Days
After drawings and specifications are approved, non-standard sanitary components can typically be produced within 7–15 working days for project-specific three-way valve requirements.
