High accuracy and easy maintenance with the Aperval

The Aperval is pilot-controlled pressure regulator for medium and high pressure applications. The Aperval is normally a fail to open regulator and specifically will open under the following conditions:

  • breakage of main diaphragm
  • lack of sensing line connection

This regulator is suitable for use with previously filtered. non-corrosive gases.

The modular design of pressure regulator Aperval allows retrofiting of an emergency monitor PM/182 or slam shut valve and/or silencer on the same body. The Aperval regulator is truly a “top entry design” which allows easy maintenance and/or retrofiting options in the field. The unique dynamic balancing system ensures an outstanding turn down ratio combined with an extremely accurate outlet pressure control.


Aperval Features

  • Compact design
  • Top Entry
  • Easy maintenance
  • Outstanding turn down ratio
  • High accuracy
  • Low operation cost
  • Low Noise

Aperval Pilot-Controlled Pressure Regulator Specifications

Technical data
Accuracy class
Up to 2,5
Available Size DN
1″ – 2″ – 2″1/2 – 3″ – 4″
Closing pressure class SG
Up to 5
Design Pressure
Up to 25 bar (362 PSIG)
Design Temperature
-10°C to +60°C (+14 to +140°F) (higher or lower temperatures on demand)
150 RF or RTJ according to ANSI B16.5 and PN 25/40 according to ISO 7005
Maximum Working Differential Pressure
19 bar (275,5 PSIG)
Minimum Working Differential Pressure
450 mbar (7.25 PSIG)
Outlet pressure range of Wd
5 mbar to 9500 mbar (2″w.c. to 137.5 PSIG)
Range of inlet pressure bpu
0,5 to 25 bar