ADCA
VALSTEAM
ADCA
We reserve the right to change the design and material of this product without notice.
IMI RP45.02 E 07.16
- Service conditions less than 100ºC: with gases the valve is ready to work. In case of liquids the actuator must
be filled completely with liquid, so, the vent screw (12) should be open till the water flow without bubbles.
The valve can be installed with the diaphragm pointing upwards or downwards.
- Service conditions more than 100ºC: Fill the seal pot (11) using a funnel (14) until the water emerges from the
actuator vent (12 ) without bubbles .Close the actuator vent screw (12 ) and proceed filling the pot until the water
reaches the top and close it with the plug. The valve is now ready to work.
The valve must be installed with the diaphragm pointing downwards.
Downstream pressure should be adjusted with the key (13). Compressing the spring, spring force increase and
downstream pressure increase. Relaxing the spring, spring force decrease and downstream pressure decrease.
The valve closes when the downstream pressure rises.
Installation area requirements:
• The installation area should have easy access and provide enough space for maintenance and removing
operations.
• The installation area should have the necessary firing system to prevent damage of the equipment due to over
temperature/pressure cause by fire.
START UP
- Current regional safety regulations should be take in to account and followed.
- Protective insulation and warning notice may be required.
- Until the start up of an existing or a new plant, the following must be checked:
- All works are completed.
- The valve is correctly installed.
- All the necessary safety devices have been installed.
- At start up, the presence of small particles in the fluid (dirt, scale, weld splatters, joint particles, remains
of Teflon tape, etc) may cause an imperfect closure of the seat. If this occurs, proceed to an accurate
cleaning.
- Protection varnishes from pipes and flanges, fats, leftover paint, graphite, etc, should also be carefully
clean, because they can be dissolved in the fluids (like steam) blocking the regulation elements after
the first service stop.
- During operation high flow noises can be heard.
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