Differential pressure regulator ASTA series D123/RPD(NZ) TERMOKOMPAKT

DN: 15 - 200
PN: 16 - 25
t max°: 150 °С
Body material: High-strength cast iron ВЧ40
Connection: Flanged

Overview

ASTA D100 is a single-seat direct-acting valve designed to automatically maintain a given pressure of the working medium, the operating principle of which is based on balancing the elastic deformation force of the adjustment spring and the force created by the pressure difference in the chambers of the membrane drive. The new line of TERMOKOMPAKT regulators was designed for use in cramped conditions at housing and communal facilities (boiler houses, central heating stations, individual heating stations) in sanitary and technical systems of buildings (heating, ventilation, water supply).

Design features

  • Modular design - universal valve compatible with various types of control units
  • Modernized design of the valve discharge chamber
  • Reduced dead zone value
  • Detachable connection of the control unit stem eliminates damage during transportation
  • Full maintainability without dismantling from the pipeline

Options on request

  • Special design of control units (various membranes, wide setting ranges, etc.)
  • Non-standard Kvs values
  • Soft sealing of the valve

Model overview

Those. information

Nominal diameter DN 15 –200
Nominal pressure PN 25 bar for DN 15 –80
16 bar for DN 100 – 200
Maximum temperature of the working medium Tmax From -30°С to 150°С
Working medium Water, glycols, as well as other media compatible with the materials of the regulator construction
Setting pressure range 0.4 –2.0 bar – red spring
1.0 –8.0 bar – yellow spring
4.0 – 12 bar – two springs
Valve capacity, Kvs 4.0 –125 m3/h
Tightness class VI according to GOST 9544-2015
(seal on the shutter EPDM/PTFE)
III according to GOST 9544-2015
(seal on the shutter “metal-to-metal”
Dead zone No more than 2.5% of the upper limit of the setting according to GOST 11881-76
Proportionality zone No more than 6% of the upper limit of the setting according to GOST 11881-76
Safety position Normal-open / normally-closed
Pressure compensation Pressure-balanced
Working medium pulse sampling External
Connection type Flanged according to GOST 33259-2015, version B
Name Material
1 Body High-strength cast iron VCh40
2 Cover Steel 25
3 Saddle Stainless steel 20X13
4 Plunger Stainless steel 20X13
5 Bushing Stainless steel 20X13
6 Lower rod Stainless steel 20X13
7 Coupling Stainless steel 20X13
8 Lower cover Grey cast iron SCh25
9 Upper cover Grey cast iron SCh25
10 Coupling Stainless steel 20X13
11 Lower actuator rod Stainless steel 20X13
12 Upper actuator rod Stainless steel 20X13
13 Diaphragm EPDM
14 Large spring (yellow) Steel 60С2А
15 Small spring (red) Steel 60С2А
16 Body seal Graphlex
17 Rod seal PTFE / EPDM
18 Plunger seal PTFE

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Colors

DOP

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