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AVK - Diaphragm Operated Control Valves
859/001X-001 - AVK diaphragm operated control valves for pressure sustaining/relief applications (PSV) automatically maintain a minimum inlet pressure, regardless of changes in flow rate or outlet pressure. The main control valve is pilot operated, capable of precise setting and easy adjustment of wanted inlet pressure sustaining, back pressure or hydraulic un-loading applications.
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- Lifted seat tavoid damage due tcavitation
- Geometry of regulating plug provides high ratiof travel against Kv, resulting in optimal control performance
- Non-symmetric axial position of rubber diaphragm results in less stretch/stress near closed position
- All non-coated internals made of stainless steel AISI 316
- Body and bonnet of ductile iron with fusion bonded epoxy, 300micron, GSK approved, RAL 5017, according tDIN 30677-2 and WRAS-DVGW/W270/UBA.
Pilot system (EP patent No. 2855989)
- Modular and compact design for easy application change
- Main components made of stainless steel AISI 316:
- Distribution block:
- Connecting main control valve tpilot system
- Independent adjustment of opening and closing speed of main valve
- Control orifice
- Filter:
- High capacity, easy tflush with possibility of back flushing
- Mesh 100, high performance wire screen type
- Hydraulic control block:
- Includes balanced pilot valve providing more stable pressure set
- Can be set up for different applications, using single-function modules (SFM) or multi-function modules (MFM)