Emerson B83 Руководство по эксплуатации - Страница 3

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Installation Recommendations

1. Use a separate trap for each unit, coil, surface,

chest, etc.

2. Include unions in inlet and outlet piping if trap will

be removed from installed location for cleaning

and maintenance.

3. For piping conditions in step 12, for siphon-drained

equipment and for tilting jacketed kettle, specify

traps with "steam lock release valves" (SLR).

4. Provide condensate-collecting pockets for

traps draining steam mains, headers, risers

and branches.

5. Ensure that return main is large enough to handle

the condensate from all traps discharging into it,

without causing excessive back pressure.

6. Always discharge high and low pressure traps into

separate return mains.

Figure 2. Recommended Piping Layouts

7. If possible, do not install trap with a long horizontal

run of piping between equipment outlet and trap

inlet. If such a hook-up is necessary, specify traps

with "steam lock release valves" (SLR).

8. Do not include a by-pass around trap unless

equipment drained must be kept in operation while

trap is being cleaned or serviced.

9. Do not jeopardize the advantage of a freeze-

proof trap by lifting the condensate or by the use

of horizontal piping from the trap outlet without

considerable pitch in the direction of flow or by

piping the trap in any way which will prevent fast

gravity drainage when steam is turned off.

Note

Do not insulate the trap or the piping and

fittings between equipment outlet and

trap inlet unless absolutely essential.

Do not use piping, nipples and fittings

smaller than trap connection size.

B Series