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HIGH PERFORMANCE WELDABLE CHECK VALVE

PERSTA 640 AA

  • SEAT INTEGRATED IN THE BODY FRAME
  • STAINLESS STEEL CLAPPER 13%CR OR ARMORED 17%CR
  • OSCILLATING CHECK DISC WITH SPHERICAL PIN
  • CRANK DRIVEN BY THE VALVE SHAFT

Range: DN 50/250

PN: 63-160

Operating temperature: +600ºC

HIGH PERFORMANCE FLANGED CHECK VALVE

SEAT INTEGRATED IN THE BODY FRAME
13%CR STAINLESS STEEL OR 17%CR ARMOR PLATED CLAPPER
SWING CHECK DISC WITH SPHERICAL PIN
CRANK ACTUATED BY THE VALVE SHAFT

PERSTA 640 AA

Range: DN 50/250

PN: 63-160

Operating temperature: +600ºC

Description

CHECK VALVE PN160 FLANGED ENDS – PERSTA 640AA

PERSTA 640AA is our high pressure check valve with weldable connection or DIN flange (ASME version available).

Forged steel valve with no porosities or voids, forged tubular body with no pressure retaining weld seams.

Stellite hardened seats for extreme strength. The crank is connected to an oscillating block that improves disc travel and sealing, the disc is coupled to the hood.

Rated pressure range is 160 bar. Maximum temperature range is -10°C to 600°C.

Characteristics 

CHECK VALVE PN160 FLANGED ENDS – PERSTA 640AA

Bolted hood

Hood bolted to the body to improve flow characteristics.

Board

High-temperature graphite gasket in the male-female connection between the hood for an anti-expulsion seal.

Disk connected to shaft

The disc arm is connected to the valve shaft by means of an oscillating block, which achieves an optimum adjustment of the disc to the seat and absolute tightness.

 

Disk connected to the bonnet

For ease of maintenance, disc and bonnet are replaced together.

Forged body

Forged body free of porosities and cavities with respect to cast steel, integrated seats that prevent the formation of corrosion.

Design options:

  • Forged steel valve body
  • Flapper valve with internal hinge pin
  • Lever on separate support ring
  • Hood pressure seal according to VGB guidelines

Materials:

  • 1.0460
  • 1.4901
  • 1.4903
  • 1.5415
  • 1.6368
  • 1.7335
  • 1.7383

Range:

DN65-300

Pressure-temperature ratio:

  • Pressure rating 680 bar
  • Temperature rating from -10 °C to 650 °C

Fields of application:

Steam and high temperature water, refining (catalytic reformers and hydrocrackers), petrochemical and chemical industries, power plants, etc.

Media:

Depending on the material, the valves are suitable for water, gas, oil and other non-aggressive media.

Downloads

CHECK VALVE PN160 FLANGED ENDS – PERSTA 640AA

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