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Type 437<br />

Capacities – Water<br />

Type 437<br />

Capacities for water according to AD 2000-Merkblatt A2, based on set pressure<br />

plus 10 % overpressure at 20 °C (68 °F). Capacities at 1 bar (14,5 psig) and<br />

below are based on 0,1 bar (1,45 psig) overpressure.<br />

Capacities for water according to ASME Section VIII (UV), based on set pressure<br />

plus 10 % overpressure at 70 °F (21 °C). Capacities at 30 psig (2,07 bar) and<br />

below are based on 3 psig (0,207 bar) overpressure.<br />

Metric Units<br />

AD 2000-Merkblatt A2 [10 3 kg/h]<br />

US Units<br />

ASME Section VIII [US-G.P.M.]<br />

Act. Orifice dia. d 0 [mm] 6 10<br />

Act. Orifice area A 0 [mm 2 ] 28,3 78,5<br />

LEOL* ) [inch 2 ] 0,021 0,062<br />

Set pressure [bar]<br />

Capacities [10 3 kg/h]<br />

0,1 0,63<br />

0,2 0,77<br />

0,5 1,08<br />

1 1,5<br />

2 2,1<br />

3 2,5<br />

4 2,9<br />

5 3,3<br />

6 3,6<br />

7 3,9<br />

8 4,1<br />

9 4,4<br />

10 4,6<br />

12 5,1<br />

14 5,5<br />

16 5,9<br />

18 6,2<br />

20 6,6<br />

22 6,9<br />

24 7,2<br />

26 7,5<br />

28 7,8<br />

30 8<br />

32 8,3<br />

34 8,6<br />

36 8,8<br />

38 9<br />

40 9,3<br />

42 9,5<br />

44 9,7<br />

46 9,9<br />

48 10,2<br />

50 10,4<br />

60 11,4<br />

70 12,3<br />

80 13,1<br />

90 13,9<br />

100 14,7<br />

110 15,4<br />

120 16,1<br />

130 16,7<br />

140 17,4<br />

150 18<br />

160 18,5<br />

170 19,1<br />

180 19,7<br />

No TÜV approval, useable for thermal expansion<br />

Act. Orifice dia. d 0 [inch] 0,236 0,394<br />

Act. Orifice area A 0 [inch 2 ] 0,044 0,122<br />

LEOL* ) [inch 2 ] 0,021 0,062<br />

Set pressure [psig]<br />

Capacities [US-G.P.M.]<br />

15 6,54<br />

20 7,39<br />

30 8,86<br />

40 10,2<br />

50 11,4<br />

60 12,5<br />

70 13,5<br />

80 14,5<br />

90 15,3<br />

100 16,2<br />

120 17,7<br />

140 19,1<br />

160 20,5<br />

180 21,7<br />

200 22,9<br />

220 24<br />

240 25<br />

260 26,1<br />

280 27,1<br />

300 28<br />

320 28,9<br />

340 29,8<br />

360 30,7<br />

380 31,5<br />

400 32,3<br />

420 33,1<br />

440 33,9<br />

460 34,7<br />

480 35,4<br />

500 36,2<br />

600 39,6<br />

700 42,8<br />

800 45,7<br />

900 48,5<br />

1000 51,5<br />

1100 53,6<br />

1200 56<br />

1300 58,3<br />

1400 60,5<br />

1500 62,6<br />

2000 72,3<br />

2500 80,8<br />

No TÜV approval, useable for thermal expansion<br />

* ) LEO L = LESER Effective Orifice liquids please refer to page 00/11<br />

How to use capacity-sheets refer to page 00/09<br />

01/18 LWN 481.01-E

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