
DN: 15 - 200
PN: 16 - 25
t max°: 200 °С
Body material: high-strength cast iron ВЧ40
Connection: Flanged
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 diaphragm actuator.
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 | From -30°С to 200 °С |
Working medium | Steam, air, and other media compatible with the materials of the regulator construction |
Valve capacity, Kvs | 4.0 – 125 m3/h |
Setting pressure range | 0.4-2.0 bar – red spring 1.0-8.0 bar – yellow spring 4.0-12 bar – two springs |
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 band | 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, isp. B |
№ | Name | Material |
---|---|---|
1 | Body | High-strength cast iron VCh40 |
2 | Cover | Steel 25 |
3 | Saddle | Stainless steel 20X13 |
4 | Plunger | Stainless steel 20Х13 |
5 | Bushing | Stainless steel 20Х13 |
6 | Lower rod | Stainless steel 20Х13 |
7 | Coupling | Stainless steel 20Х13 |
8 | Lower cover | Grey cast iron SCh25 |
9 | Upper cover | Grey cast iron СЧ25 |
10 | Coupling | Stainless steel 20Х13 |
11 | Lower actuator rod | Stainless steel 20Х13 |
12 | Upper actuator rod | Stainless steel 20Х13 |
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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