![Caleffi 519700A Differential Bypass Valve, 1-1/4 in. NPT — New England Supply House spec card [NESH-SPEC-CARD-V2]](http://newenglandsupplyhouse.com/cdn/shop/files/nesh-519700a-card.png?v=1793997994&width=1946)
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Caleffi 519700A Differential Bypass Valve, 1-1/4 in. NPT
Caleffi 519700A Differential Bypass Valve, 1-1/4 in. NPT
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$303.48 USD
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$303.48 USD
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SKU:519700A
View full details![Caleffi 519700A Differential Bypass Valve, 1-1/4 in. NPT — New England Supply House spec card [NESH-SPEC-CARD-V2]](http://newenglandsupplyhouse.com/cdn/shop/files/nesh-519700a-card.png?v=1793997994&width=1445)
![Caleffi 519700A Differential Bypass Valve, 1-1/4 in. NPT specifications — New England Supply House [NESH-SPECTABLE-V1]](http://newenglandsupplyhouse.com/cdn/shop/files/nesh-519700a-specs.png?v=1793997995&width=1445)
The Caleffi 519700A is a differential bypass valve with a 1-1/4 in. NPT connection, used in hydronic heating systems to maintain minimum flow and protect the boiler or circulator when zone valves restrict flow. It is a genuine Caleffi replacement part. Confirm the part number against your equipment's parts list before ordering.
Specifications
| Part Number | 519700A |
|---|---|
| Brand | Caleffi |
| Type | Differential Bypass Valve |
| Connection | 1-1/4 in. NPT |