"Return-Temperature Control Valves BW KALORIMAT nn

Features of the BW series

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Direct acting proportional controller for maintaining constant return temperatures.

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Used for regulating large heating systems and tracing systems, or for the temperature control of individual heat exchangers (washing baths, chemical and galvanic baths).

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The valve prevents short-circuiting and automatically balances large systems.

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Straight-through valve with balanced valve sleeve. Closing temperature set at our works.

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Valves with external setting device available on request.

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Application

BW 31 for hot water BW 31 A for thermal oils >
L BW 31, DN 1525 mm
External setting devicefor BW 31

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Specification

BW 31 PN 40 Material 1.0460 (P250GH / C 22.8) / ASTM A105
Size (DN) 15, 20, 25
Connection Flanged to EN PN 40
Service pressure PMA [bar] 40 37.3 30.2 25.8 23.1
Inlet temperature TMA [ְC] 20 100 200 300 400 BW 31 PN 25 Material 1.0460 (P250GH / C 22.8) / ASTM A105
Size (DN) 40
Connection Flanged to EN PN 25
Service pressure PMA [bar] 25 23.3 19.4 16.1 14.4
Inlet temperature TMA [C] 20 100 200 300 400 BW 31A PN 40 Material 1.0460 (P250GH / C 22.8) / ASTM A105
Size (DN) 15, 20, 25
Connection Flanged to EN PN 40
Service pressure PMA [bar] 40 37.3 30.2 25.8 23.1
Inlet temperature TMA [аC] 20 100 200 300 400 BW 31A PN 25 Material 1.0460 (P250GH / C 22.8) / ASTM A105
Size (DN) 40
Connection Flanged to EN PN 25
Service pressure PMA [bar] 25 23.3 19.4 16.1 14.4
Inlet temperature TMA [C] 20 100 200 300 400 Admissible differential pressure (upstream pressure 6 minus downstream pressure) ТȆ PMX [bar] >

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End Connections and Overall Lengths L

TypeConnectionsOverall length L [mm]DN 15DN 20DN 25DN 40 >
1 / >
2 " >
3 / >
4 "1"1 >
1 / >
2 " BW 31 Flanged EN PN 25150150160200Flanged ASME 150150150160200Screwed sockets959595 >
Setting devicefor BW 31A BW 31A Flanged EN PN 25150150160200Flanged ASME 150150150160200Screwed sockets959595֖ >

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