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3-PORT THREADED SEAT VALVES PN 16 (2...120 °C)VRS 3.. |
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APPLICATION
VRS 3.. bronze valves are designed for controlling hot or chilleded water fl ow in heating and air-condimtioning plants.
- Permitted fl uids:
- Hot or superheated water max.120 °C;
- Chilled water min. 2 °C (glycol max. 50%).
- Operated by linear actuators type: CLS ..., CLQ 07., CEQ U07. (with spring-return closure).
FEATURES
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Body and seat in RG5 bronze.
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Stainless steel stem; brass plug.
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Brass plug.
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Connections by screwed female unions ISO 228/1.
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Control:
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Linear control;
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Control ratio 50:1.
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Let-by:
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throughport ≤ 0.05% Kvs.
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By-pass ≤ 2% Kvs.
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| DN Body | DN unions | Kvs (1) | Suitable actuators | ||||||||
| Code | mm | male valve | female pipe | m3/h | Run mm. | CLS
07.
14 s/mm |
CLQ
07. / CEQ U07. (4)
14 s/mm |
Data sheet | |||
| bar (2) | sec (3) | bar (2) | sec (3) | ||||||||
| VRS 320 | 20 | 1"1/4 | 3/4" | 6.3 | 5.5 | 1.7 | 77 | 1.7 | 77 | M 944 | |
| VRS 325 | 25 | 1"1/2 | 1" | 10 | 5.5 | 1.0 | 77 | 1.0 | 77 | ||
| VRS 331 | 32 | 2" | 1"1/4 | 13 | 5.5 | 0.7 | 77 | 0.7 | 77 | ||
| VRS 339 | 40 | 2"1/4 | 1"1/2 | 16 | 5.5 | 0.5 | 77 | 0.5 | 77 | ||
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(1) : Kvs Flow coefficient: Flow in m3/h with valve open and pressure drop of 100 kPa - 100 kPa = 10 mWG = 1 bar.
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(2) : bar Maximum differential pressure permitted by actuator.
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(3) : s – Time required by actuator to make the complete valve run.
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(4) : actuator with spring return.
ACCESSORIES:
FEMALE PLUGS TO CONVERT VRS VALVES FROM 3-TO 2-PORT
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GG25 cast iron. Consist of femaleplug and seal.
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Supplied in packs of 3.
| Code | Description | Valve | |
| TVG G20 | 1"1/4 female plug with seal | VRS 320 | |
| TVG G25 | 1"1/2 female plug with seal | VRS 325 | |
| TVG G32 | 2" female plug with seal | VRS 331 | |
| TVG G40 | 2"1/4 female plug with seal | VRS 339 |
PRESSURE DROP IN SEAT VALVES
