Pilot operated angular pressure regulator "before itself" ASTA series P03/03

DN: 50 - 400
PN: 16/25 bar (40 bar*)
t max°: 80 °C
Body material: cast iron HF
Connection: flanged

Overview

The ASTA P03 series control valves are designed to regulate the flow of the working medium by changing the flow area of the valve.
The angular valve body provides a higher flow rate and has a lower pressure loss at high flow rates, and is also minimally susceptible to cavitation damage.
The valves have a wide range of applications depending on the type of control pilot.

Design features

  • Angular valve body
  • High control ratio (wide range of working flows)
  • Various mounting positions (horizontal/vertical)
  • Soft plunger seal (tightness in the closed position)
  • Two-chamber actuator, allowing the use of pulses in the piping
  • The valve does not require maintenance for a long time due to corrosion-resistant components
  • Epoxy body coating

Options on request

  • Anti-cavitation plunger
  • Piston actuator for high setting pressures
  • Position indicator
  • Limit switches

Model overview

Those. information

Nominal diameter DN 50 – 400
Nominal pressure PN 16/25 bar (40 bar)*
Temperature of working medium From –10 °C to 80 °C
Working medium Water and other liquid media compatible with valve construction materials
Capacity, Kvs 40 – 3300 m3/h
Connection type Flanged according to GOST 33259-2015
No. Name Material
1 Body Ductile iron GGG50
2 Cover Ductile iron GGG50
3 Stem Stainless steel AISI 304
4 Spring Stainless steel AISI 304
5 Diaphragm Neoprene (EPDM / natural rubber)*
6 Anticavitation plunger (on request) Brass Ms58
7 Plunger Stainless steel AISI 304 - DN 50-150
GGG50 Ductile Iron - DN 200-400
8 Gasket Natural rubber
9 Saddle Stainless steel AISI 304

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