ARI-PREDEX
Excess pressure regulator, straight through with diaphragm actuator
eClass-No.: 37010990
Application: Industrial installations, processing technology, plant manufacturing, etc.
Medium: Steam, neutral gases, vapours and liquids, etc.
The excess pressure regulator is a self-operated, direct acting proportional regulator, which regulates the upstream pressure. The upstream pressure (p1) is regulated, this means, the valve opens when the upstream pressure rises over an adjusted set point. If the upstream pressure decreases under the adjusted set point, the valve closes automatically. Because of the stainless-steel bellows, the downstream pressure (p2) has no influence.
Operating fields are to regulate fluids of the group II acc. to Pressure Equipment Directive 2014/68/EU, e.g. steam, neutral gases, vapours and liquids. With steam and liquids, having temperatures higher than the allowable working temperatures a water seal pot must be installed in the control line (to protect actuator diaphragm) Installation in the control line can be seen in the system drawing:
- Compact design
- Construsction without pillars
- Exact and easy adjustment
- Diameter independent ranges
- Simple change of spring and actuator
- 5 exchangeble actuator sizes
- 3 exchangeble spring sizes
- Spindle sealing via stainless steel below
- Pressure balance by stainless steel below
- Tapered seat ring
- Screwed seat ring
- Kvs-values reduceable
- FLow divider for noise reduction (optional)
- Plug with PTFE soft sealing (optional)