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ARI-PREDEX PRESSURE EXCESS VALVE

ARI-PREDEX fig. 705 straight through pressure excess valve with diaphragm actuator. Compact design.

Action: Self operated, proporsional pressure excess valve which controls the upstream pressure (P1). Valve opens with increasing upstream pressure and closes when it reaches the set point.

Diaphragm in NBR (standard), option in EPDM. Actuators in different sizes.

Contact us for more information about these variants.

Properties
  • Flanged connections
  • Body materials in cast iron, nodular iron, carbon steel and stainless steel
  • Screwed seat ring
  • Compact design
  • Options: water seal pot, flow divider, soft seated PTFE-plug
Applications
  • For control and regulation of steam, hot water, water, neutral gases and different liquids
  • For industry, offshore, ship building, cooling systems and ventilation
Technical data
  • Flanged
  • DIN: DN15-150, PN10-40
  • ANSI: 1" - 6", ANSI class 150-300
  • For horizontal mounting with actuator downwards
  • Face to face acc. to DIN EN 558 series FTF-1 / ANSI B16.10
Technical documentation
  • PED 2014/68/EU
  • Certificate EN 10204-2.1 and 3.1 on request
Technical table
Material compositions:
Description: Materials:
Body: Cast iron EN-JL1040, nodular iron EN-JS1049, carbon steel 1.0619+N, stainless steel 1.4581
Bonnet: Nodular iron EN-JS1049, stainless steel 1.4581
Trim (Seat & plug) Stainless steel 1.4021+QT, stainless steel 1.4571 (option PTFE soft seat)
Bellow: Stainless steel 1.4571
Gasket: Graphite (standard)
Rolling diaphragm: NBR standard (max temp. +100C), option EPDM (max temp. +110C)
Upstream pressure range (bar): 0,2-0,6 / 0,5-1,2 / 0,8-2,5 / 2,0 -5,0 / 4,5-10 / 8,0-16,0 bar