![Caleffi 573503A Backflow Preventer, 3/4 in. NPT specifications — New England Supply House [NESH-SPECTABLE-V1]](http://newenglandsupplyhouse.com/cdn/shop/files/nesh-573503a-specs.png?v=1793998050&width=1445)
The Caleffi 573503A is a backflow preventer with a 3/4 in. NPT connection, used to stop reverse flow of water into the potable water supply. It is a genuine Caleffi replacement part. Confirm the part number against your equipment's parts list before ordering.
Specifications
| Part Number | 573503A |
|---|---|
| Brand | Caleffi |
| Type | Backflow Preventer |
| Connection | 3/4 in. NPT |