Series 3048

FlowShield™ DuC, Dual check backflow preventer (MNPT)

304840A.png
Download high resolution

Product Description

Dual check backflow preventer (MNPT)
Dual unions for easy serviceability
High-temp spring loaded check valves

Technical data

Material: DZR low lead brass
Medium temperature range: 32 – 180 °F
Maximum operating pressure: 175 psi
Low Lead

Certifications

ES LOW LEAD
Vermont Act 193
United States S.3874
Maryland HB372
Buy American Act
California HSC 116875
NSF/ANSI/CAN 372

Drawings and specifications

Part number Connection Actions
304840A 1/2" NPT male
union
3D models
Tender text
CALEFFI, 304840A, FlowShield™ DuC. Dual check backflow preventer (MNPT) Dual unions for easy serviceability High-temp spring loaded check valves connection: 1/2" NPT male, union. Maximum operating pressure: 175 psi. Medium temperature range: 32 – 180 °F. Material: DZR low lead brass.
304850A 3/4" NPT male
union
3D models
Tender text
CALEFFI, 304850A, FlowShield™ DuC. Dual check backflow preventer (MNPT) Dual unions for easy serviceability High-temp spring loaded check valves connection: 3/4" NPT male, union. Maximum operating pressure: 175 psi. Medium temperature range: 32 – 180 °F. Material: DZR low lead brass.
304860A 1" NPT male
union
3D models
Tender text
CALEFFI, 304860A, FlowShield™ DuC. Dual check backflow preventer (MNPT) Dual unions for easy serviceability High-temp spring loaded check valves connection: 1" NPT male, union. Maximum operating pressure: 175 psi. Medium temperature range: 32 – 180 °F. Material: DZR low lead brass.

Applications

Caleffi Rep Locator
Caleffi Rep Locator

Find your nearest Caleffi Representative