Steam pressure reducing valve core purpose
1. Reduce high boiler steam pressure to the exact pressure required for:
◦ EPS pre-expander (pre-foaming beads)
◦ Shape molding machine (steam heating & molding)
◦ Block molding machine
2. Keep steam pressure constant and stable during production
3. Protect molds, cylinders, steam pipes and equipment from over-high pressure damage
4. Ensure uniform foaming density, consistent product quality
Why EPS production line needs steam pressure reducing valve
Boilers usually supply high-pressure steam, but EPS foaming/molding only works with low-pressure saturated steam.
Too high pressure → over-expansion, shrinkage, burnt foam, defective products.
Unstable pressure → uneven bead density, unstable finished parts.
How steam pressure reducing valve works
1. High-pressure steam enters the reducer
2. Internal valve automatically throttles and drops pressure
3. Output stable low-pressure steam to each EPS machine
4. Auto-adjusts inlet pressure changes to keep outlet pressure steady
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Steam pressure reducing valve
Steam pressure reducing valve
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