Product specification
Pneumatic operated release and blocking of gas flows in pilot and industrial plants.
Diaphragm valve specially developed for aggressive media, for reliable continuous use as shut-off valve and safety valve in process engineering and plant technology.
High safety at use with aggressive media by selection of resistant materials. For good media resistance the valve body is made of PP, for higher requirements and durability at high temperatures it is made of PVDF.
High safety is also guaranteed by the special construction of the diaphragm valve: The flow rate is not controlled by a diaphragm alone, but in combination with a sealing cone.
Improved durability compared to conventional diaphragm valves. The PTFE sealing cone protects the PTFE diaphragm and prevents particle deposition as well as associated leakages.
In „closed" position the cone seals the medium off. The diaphragm provides the sealing off the valve against atmosphere.
The valve is available in two different designs according to closure type: (A) - normally open (NO), (B) - normally closed (NC). Type A: the control air connection is situated on the top and a vent connection on the side. Type B: the other way around.
The connections are compatible with THOMAFLUID®-/MULTIFIT®-tubing connectors EMP-3 (parts 20246) or pipe connectors EMP-4 (parts 10642), thus offering various connection and adaption possibilities.
Technical specification
Material:
Valve body: PP (polypropylene) or PVDF (polyvinylidene fluoride)
Diaphragm: PTFE (polytetrafluoroethylene)
Media: gases, also aggressive media such as fluorine or chlorine
Closure type: A - normally open (NO); B - normally closed (NC)
Max. operating pressure: 4 bar at +20 °C
Control pressure: normally open (NO): 2.5-5 bar; normally closed (NC): 3 bar
Max. temperature: PP up to +90 °C; PVDF up to +120 °C
Nominal width: DN 5
Control air connection: for tubing DN 4/6
Connection: seamless, cylindrical internal thread; medium: G 1/4"; control air: G 1/8"
General Information
Use for environmental technology and process engineering, water treatment technology and sewage technology, plant and apparatus construction.
2/2-way diaphragm valve with pneumatic actuator. Its compact construction allows a space-saving mounting. The valve features high throughput and is insensitive to heavily soiled media due to the used corrosion-resistant materials.
All control functions are realisable by adding or removing the respective pressure springs. The standard valve is fitted with stroke limiter and visual position indicator.
| Item | Image |
NW mm
|
Material |
max. Temp. °C
|
Funktion |
Einheit Stück
|
Price Euro* |
Buy |
|---|---|---|---|---|---|---|---|---|
| 305124 |
|
5 | PP | 90 | A | 1 | 251.00 | |
| 305125 |
|
5 | PP | 90 | B | 1 | 251.00 | |
| 305126 |
|
5 | PVDF | 120 | A | 1 | 274.00 | |
| 305127 |
|
5 | PVDF | 120 | B | 1 | 274.00 | |
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