Watson McDaniel Steam Design Guide

Diagram of a Steam System

DRIP APPLICATION:

AIR VENT: Placed at the end of steam mains and other high points in order to remove air from the system.

Drip applications refer to removing the condensate that forms in the steam pipes as opposed to condensate that forms at the actual process. It is appropriate to have steam traps (drip traps) placed 150 to 300 feet apart.

Air Vent OPEN Discharging Air on start-up

Trap CLOSED

Trap OPEN

Air

steam

CLOSED Trapping steam in system

OPEN Discharging Condensate

Roof

Air Vent Discharges air from the system (placed at end of steam main)

AV2000

Drip Application: Removes condensate formed in the steam main

Drip Application: Removes condensate formed in the steam main

Process #2 Vat Process

Process #1

(placed every 200 feet)

Steam Jacketed Kettle

Drip Trap TD600S

Drip Trap TD600S

Process Application: Removes condensate formed by the process

F&T Trap

F&T Trap

Process Trap

Drip Application: Removes condensate formed in the steam supply line

Process Trap

Drip Trap TD600

Drip Trap TD600

Condensate pumped back to the boiler room to be reused

PROCESS APPLICATION:

Steam Jacketed Kettle

Steam Jacketed Kettle

Steam Jacketed Kettle

Air Vent OPEN Discharging Air on start-up

Trap CLOSED Air Vent CLOSED Trapping steam in system

Air Vent CLOSED when steam is present

AIR

STEAM

STEAM

condensate

condensate

condensate

Trap OPEN Discharging Condensate

Air

Process Applications refer to removing condensate and air from the actual process where steam is being used. This process could be a heat exchanger making hot water, or a radiator heating a room, or anything else that requires the use of steam. Traps used for process applications require larger condensate handling capability than steam traps used for drip applications and also need to be able to discharge large amounts of air.

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Tel: 610-495-5131 • Pottstown PA • USA •• www.watsonmcdaniel.com

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