Siemens VRD40.150UF Instrukcje techniczne - Strona 7
Przeglądaj online lub pobierz pdf Instrukcje techniczne dla Jednostka sterująca Siemens VRD40.150UF. Siemens VRD40.150UF 11 stron. Double valves for use with skp electro-hydraulic actuators
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VRD4 Series Double Valves
Gas flow charts
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Siemens AG Building Technologies Division
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Flow rate (SCFH)
Figure 2. Sizing double valves
Assumptions:
1) Pressure downstream of valve is atmospheric
2) Maximum gas temperature of 140 °F
3) Valve in fully open position
NOTE:
Pressure drop is total drop across both valves when using SKPx5...
actuator, with or without an AGA66.
CAUTION:
Do not oversize valves equipped with regulating actuators SKP2..., SKP5... or SKP7...
Oversizing may limit turndown and could cause oscillations.
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Document Number CC1N7649us
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Technical Instructions
September 08, 2016
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Natural gas
Digester gas
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Propane gas
Air
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