Type 75A regulator is designed to reduce domestic or industrial water
pressure, thus protecting plumbing fixtures and meters from high
pressure surges.
Type 75A is self-contained, requiring no external control line for operation.
Downstream pressure is directly registered under the diaphragm. As
the downstream pressure increases, the diaphragm force overcomes the
spring compression, causes the valve disk to rise, and reduces flow
through the regulator.