VCIOM-15471-EN 20/06Emerson.com/FinalControl © 2020 Emerson. All Rights Reserved.

YARWAY TRACE-MATE STEAM TRAPS

INSTRUCTION, OPERATION AND MAINTENANCE MANUAL

Before installation these instructions must be fully read and understood

SPECIFICATIONS

OPERATION

On start-up, with the thermal element cool, the

spring-loaded valve is wide open, discharging

air and initial flow of cool condensate.

preset temperature, the thermal element

positions the valve to provide continuous,

modulating discharge at a constant

temperature.

Max. pressure 1.0 MPa

Max. temp. 185°C

Size 8A (¼B)

Connection Threaded

Extent of temp. control 60 ~ 105°C

Bonnet 177 Nm (18 kgf·m)

scale and dirt. Use pipe dope or tape sparingly

when attaching the trap to the pipes.

Observe the pressure limitation and the flow

direction marked on the body. The preferred

installation direction is vertical with discharge

downward to the return system or drain. The

flow direction should be down, or horizontal,

to the drain. Avoid excessive backpressure in

the discharge piping as this will reduce the

flow capacity of the trap.

FIGURE 1

PARTS LIST

Item Part Material

1 Body Carbon steel

2 Bonnet Carbon steel

3 Disc Carbon steel

4 Seat Stainless steel

5 Valve Stainless steel

6 Valve holder Stainless steel

7 Wax thermo-element Brass

8 Adjusting screw Stainless steel

9 Lock nut Carbon steel

TEMPERATURE ADJUSTING PROCEURES

See Figure 2.

The valve is factory adjusted to the standard

preset temperature, 160°F (70°C). To change

temperature setting proceed as follows:

1. Remove the cap (3).

2. Loosen the lock nut (9) with a wrench.

3. With a screwdriver, gently turn the adjusting

screw (8) to the left (counter-clockwise) for

setting to a higher temperature.

5. When the change of setting is completed,

tighten the lock nut with a wrench.

6. Replace the cap. This completes the

adjusting procedure.

TROUBLESHOOTING

Trap fails to pass condensate.

a. Check upstream and downstream to assure

b. Check integral strainer for clogging. Check

Trap blows live steam.

a. Dirt on valve seating area. Block trap line

FIGURE 2

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