Sanitary Stainless Steel Pneumatic Diaphragm Valve
KINGMAN supplies sanitary stainless steel pneumatic diaphragm valves. Equipped with stainless steel pneumatic actuator driven by compressed air, it supports remote automatic on-off control for automated sterile production lines. The 316L polished valve body features dead-space-free flow path. The diaphragm fully separates medium from pneumatic components to prevent external leakage. The stainless actuator resists moisture and corrosion and performs stably under humid steam sterilization conditions, widely used in pharmaceutical batching and biological fermentation pipelines. Valve position feedback can be installed to connect with automatic control systems.
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
3A / DIN / ISO Standard
| Material Code | Size | D | Do | Dn | L | L1 | H | H1 | F |
|---|---|---|---|---|---|---|---|---|---|
| DM01DINCCSP6LEPP008 | DN8 1/4" | 25.2 | 6.35 | 4.3 | 63.5 | 63.5 | 95 | 8 | 44 |
| DM01DINCCSP6LEPP010 | DN10 3/8" | 25.2 | 9.5 | 7.5 | 63.5 | 63.5 | 95 | 8 | 44 |
| DM01DINCCSP6LEPP015 | DN15 1/2" | 25.2 | 12.7 | 9.4 | 63.5 | 63.5 | 95 | 8 | 44 |
| DM01DINCCSP6LEPP015 | DN15 1/2" | 25.2 | 12.7 | 9.4 | 108 | 108 | 111 | 11.5 | 58 |
| DM01DINCCSP6LEPP020 | DN20 3/4" | 50.5 | 19.1 | 15.8 | 117 | 117 | 114 | 11.5 | 58 |
| DM01DINCCSP6LEPP020 | DN20 3/4" | 50.5 | 19.1 | 15.8 | 127 | 127 | 146 | 16 | 90 |
| DM01DINCCSP6LEPP025 | DN25 1" | 50.5 | 25.4 | 22.1 | 127 | 127 | 146 | 17 | 90 |
| DM01DINCCSP6LEPP032 | DN32 1.25" | 50.5 | 31.8 | 23.5 | 146 | 146 | 180 | 20 | 112 |
| DM01DINCCSP6LEPP050 | DN50 1.5" | 50.5 | 38.1 | 34.8 | 159 | 159 | 180 | 22 | 112 |
| DM01DINCCSP6LEPP050 | DN50 2" | 84 | 50.8 | 47.5 | 190 | 190 | 215 | 31 | 138 |
| DM01DINCCSP6LEPP065 | DN65 2.5" | 77.5 | 69.5 | 59.5 | 190 | 190 | 221 | 37 | 138 |
| DM01DINCCSP6LEPP065 | DN65 2.5" | 77.5 | 63.5 | 59.5 | 265 | 240 | 345 | 42 | 168 |
| DM01DINCCSP6LEPP080 | DN80 3" | 91 | 76.2 | 72.2 | 265 | 240 | 345 | 50 | 168 |
| DM01DINCCSP6LEPP100 | DN100 4" | 119 | 101.6 | 97.4 | 340 | 310 | 400 | 61 | 198 |
3A / DIN / ISO Standard
| Material Code | Size | Size | D | Do | Dn | L | L3.1 | H | H1 | E |
|---|---|---|---|---|---|---|---|---|---|---|
| DM01DINCCHW6LEPP008 | DN8 | 1/4" | 25.2 | 6.35 | 4.3 | 63.5 | 63.5 | 65 | 8 | 36 |
| DM01DINCCHW6LEPP010 | DN10 | 3/8" | 25.2 | 9.5 | 7.5 | 63.5 | 63.5 | 65 | 8 | 36 |
| DM01DINCCHW6LEPP015 | DN15 | 1/2" | 25.2 | 12.7 | 9.4 | 63.5 | 63.5 | 65 | 8 | 36 |
| DM01DINCCHW6LEPP015 | DN15 | 1/2" | 25.2 | 12.7 | 9.4 | 108 | 108 | 73 | 11.5 | 65 |
| DM01DINCCHW6LEPP020 | DN20 | 3/4" | 50.5 | 19.1 | 15.8 | 117 | 117 | 75 | 11.5 | 65 |
| DM01DINCCHW6LEPP020 | DN20 | 3/4" | 50.5 | 19.1 | 15.8 | 127 | 127 | 113 | 16 | 85 |
| DM01DINCCHW6LEPP025 | DN25 | 1" | 50.5 | 25.4 | 22.1 | 127 | 127 | 115 | 17 | 85 |
| DM01DINCCHW6LEPP032 | DN32 | 1.25" | 50.5 | 31.8 | 23.5 | 146 | 146 | 133 | 20 | 105 |
| DM01DINCCHW6LEPP040 | DN40 | 1.5" | 50.5 | 38.1 | 34.8 | 159 | 159 | 135 | 22 | 105 |
| DM01DINCCHW6LEPP050 | DN50 | 2" | 64 | 50.8 | 47.5 | 190 | 190 | 156 | 31 | 125 |
| DM01DINCCHW6LEPP065 | DN65 | 2.5" | 77.5 | 63.5 | 59.5 | 190 | 190 | 160 | 37 | 125 |
| DM01DINCCHW6LEPP065 | DN65 | 2.5" | 77.5 | 63.5 | 59.5 | 265 | 240 | 250 | 42 | 210 |
| DM01DINCCHW6LEPP080 | DN80 | 3" | 91 | 76.2 | 72.2 | 265 | 240 | 256 | 50 | 210 |
| DM01DINCCHW6LEPP100 | DN100 | 4" | 119 | 101.6 | 97.4 | 340 | 310 | 268 | 61 | 210 |
Features
- Stainless steel pneumatic actuator driven by compressed air, supporting remote automatic on/off and integration into automated production lines.
- All-stainless actuator resists moisture and steam corrosion for long service in humid sterilization environments.
- Full diaphragm isolation separates process fluid from pneumatic parts completely to eliminate medium leakage risk.
- Valve position feedback device is optional to transmit on/off signals and connect with automatic control systems.
- Polished dead-space-free 316L flow channel without media accumulation, meeting high purity requirements for pharmaceutical batching and bioreactor applications.
- Fast pneumatic response allows frequent on-off cycles with stable operation, suitable for continuous pipeline production.
Working Principle
Sanitary Stainless Steel Pneumatic Diaphragm Valve: Compressed air enters the pneumatic actuator and pushes the internal piston to generate axial thrust. The piston drives the spindle downward and presses the flexible diaphragm tightly onto the weir of the valve body, forming a bubble-tight face seal to shut off the medium flow completely. When the air inside the actuator is exhausted, the built-in return spring inside the actuator pushes the piston and spindle upward, the diaphragm rebounds and lifts away from the weir, so the flow path is fully opened to allow smooth medium passage. The diaphragm acts as a complete physical isolation barrier, which fully separates the process medium from all pneumatic mechanical parts such as piston, spindle and transmission components. This isolation prevents cross-contamination and avoids direct contact between fluid media and metal moving parts. Tri-clamp connections enable fast disassembly without cutting the pipeline, convenient for CIP online cleaning, SIP sterilization, internal visual inspection, diaphragm replacement and routine maintenance.
Why Choose KINGMAN
Pneumatic Package Matching
Stainless steel pneumatic diaphragm valves can be configured around actuator operation, sanitary connection and process requirements, supporting OEM equipment that needs remote on-off control.
CNC Interface Consistency
48 MAZAK CNC lathes and 10 machining centers provide repeatable control of valve bodies, sealing interfaces and connection dimensions across ongoing pneumatic diaphragm valve production.
Bulk Order Capacity
With annual output above 2 million units, KINGMAN can support repeat sanitary valve programs where approved pneumatic diaphragm valve specifications move from trial orders into volume purchasing.
