The Flomatic CCA103-4-300 C103/CA103 C/CA C flanged pressure reducing valve with check is a pilot-operated automatic control valve designed to reduce high upstream pressure to a stable, lower downstream pressure in water system applications. The external check feature helps prevent reverse flow in the event of downstream pressure reversal.

Specifications:

Valve Type: Pilot operated pressure reducing valve with external check

Body Style: Full port globe style (Model C) / angle body style (Model CA)

Connection: Flanged, ASME Class 300

Size: 4"

Function: Maintains a preset constant downstream pressure regardless of variations in flow rate and/or upstream pressure; closes on downstream pressure reversal

Body & Cover: Ductile iron (cast construction)

Stem: 304 stainless-steel

Spring: 302 stainless-steel

Fasteners: 18-8 stainless-steel

Seat Seal: Buna-N (standard)

Diaphragm: Nylon reinforced Buna-N (standard)

Coating: NSF 61 approved fusion epoxy

Weight: 127 lbs

Operation: The C103 pressure reducing valve automatically maintains a preset downstream pressure by throttling the main valve diaphragm assembly as demand and upstream pressure change. The external check feature allows the valve to close when downstream pressure exceeds upstream pressure.

Construction: The valve body and cover are ductile iron. A diaphragm-actuated design forms a sealed chamber above the diaphragm to separate operating pressure from line pressure. Stainless-steel components and fusion epoxy coating support durability and long-term service.

Applications: Municipal water distribution, pressure zone control, commercial and industrial water service, and installations requiring downstream pressure regulation with reverse flow protection.

Flomatic Quality: Flomatic products are engineered to meet demanding water system requirements and are built for dependable performance. Flomatic pilot operated control valves are built to order and configured to meet application requirements.