Series 3049

FlowShield™ DC, Testable double check backflow preventer

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Product Description

Testable double check backflow preventer
The 3049 FlowShield™ DC is a compact, lead-free solution for non-hazardous backflow prevention. Engineered with the contractor in mind, its reversible handles eliminate installation headaches in tight quarters, while its high-efficiency design manages flow with minimal pressure loss. This ASSE 1015 and CSA B64.5 certified assembly ensures superior durability and simplified maintenance through our zero-guesswork rebuild kits. Backed by our global reputation for innovation, it is the reliable choice for safeguarding potable water systems.

Technical data

Material: DZR low lead brass

Maximum working temperature: 150 °F

Maximum operating pressure: 175 psi

Note

Key Features:

Adaptable installation design: Features reversible handles for left or right flow direction applications, making it easy to install in cramped or tight spaces
Premium material durability: Manufactured with dezincification-resistant, low-lead brass and NSF/ANSI/CAN 61 certified for long-term performance longevity.
Zero-guesswork rebuild kits: Service components are provided in comprehensive, all-in-one kits to ensure a fast rebuild without the hunt for individual parts.
Certified industry compliance: Listed to ASSE 1015 and CSA B64.5 standards to meet rigorous US and Canadian plumbing codes for non-health hazard applications.
High-efficiency flow performance: Engineered to manage high flow with minimal pressure loss, satisfying residual pressure requirements without supplemental boosting.
Reliability and expert support: When you’re in the field, you’re never alone. Every product is backed by the Caleffi Tech Support Team and our global reputation for engineering excellence.

Certifications

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Drawings and specifications

Part number	Connection
304940A	1/2" NPT female
2D drawings pdf Download this file dwg Share this file Download this file Share Facebook Linkedin Twitter https://www.caleffi.com/sites/default/files/media/external-drawing/304940A%20%28dwg%29.dwg dxf Share this file Download this file Share Facebook Linkedin Twitter https://www.caleffi.com/sites/default/files/media/external-drawing/304940A%20%28dxf%29.dxf 3D models igs Share this file Download this file Share Facebook Linkedin Twitter https://www.caleffi.com/sites/default/files/media/external-drawing/304940A%20%28igs%29.igs stp Share this file Download this file Share Facebook Linkedin Twitter https://www.caleffi.com/sites/default/files/media/external-drawing/304940A%20%28stp%29.stp Tender text CALEFFI, 304940A, FlowShield™ DC. Testable double check backflow preventer The 3049 FlowShield™ DC is a compact, lead-free solution for non-hazardous backflow prevention. Engineered with the contractor in mind, its reversible handles eliminate installation headaches in tight quarters, while its high-efficiency design manages flow with minimal pressure loss. This ASSE 1015 and CSA B64.5 certified assembly ensures superior durability and simplified maintenance through our zero-guesswork rebuild kits. Backed by our global reputation for innovation, it is the reliable choice for safeguarding potable water systems. connection: 1/2" NPT female. Maximum operating pressure: 175 psi. Maximum working temperature: 150 °F. Material: DZR low lead brass. SCIP code CODE UNDER ANALYSIS
304950A	3/4" NPT female
2D drawings pdf Download this file dwg Share this file Download this file Share Facebook Linkedin Twitter https://www.caleffi.com/sites/default/files/media/external-drawing/304950A%20%28dwg%29.dwg dxf Share this file Download this file Share Facebook Linkedin Twitter https://www.caleffi.com/sites/default/files/media/external-drawing/304950A%20%28dxf%29.dxf 3D models igs Share this file Download this file Share Facebook Linkedin Twitter https://www.caleffi.com/sites/default/files/media/external-drawing/304950A%20%28igs%29.igs stp Share this file Download this file Share Facebook Linkedin Twitter https://www.caleffi.com/sites/default/files/media/external-drawing/304950A%20%28stp%29.stp Tender text CALEFFI, 304950A, FlowShield™ DC. Testable double check backflow preventer The 3049 FlowShield™ DC is a compact, lead-free solution for non-hazardous backflow prevention. Engineered with the contractor in mind, its reversible handles eliminate installation headaches in tight quarters, while its high-efficiency design manages flow with minimal pressure loss. This ASSE 1015 and CSA B64.5 certified assembly ensures superior durability and simplified maintenance through our zero-guesswork rebuild kits. Backed by our global reputation for innovation, it is the reliable choice for safeguarding potable water systems. connection: 3/4" NPT female. Maximum operating pressure: 175 psi. Maximum working temperature: 150 °F. Material: DZR low lead brass. SCIP code CODE UNDER ANALYSIS
304960A	1" NPT female
2D drawings pdf Download this file dwg Share this file Download this file Share Facebook Linkedin Twitter https://www.caleffi.com/sites/default/files/media/external-drawing/304960A%20%28dwg%29.dwg dxf Share this file Download this file Share Facebook Linkedin Twitter https://www.caleffi.com/sites/default/files/media/external-drawing/304960A%20%28dxf%29.dxf 3D models igs Share this file Download this file Share Facebook Linkedin Twitter https://www.caleffi.com/sites/default/files/media/external-drawing/304960A%20%28igs%29.igs stp Share this file Download this file Share Facebook Linkedin Twitter https://www.caleffi.com/sites/default/files/media/external-drawing/304960A%20%28stp%29.stp Tender text CALEFFI, 304960A, FlowShield™ DC. Testable double check backflow preventer The 3049 FlowShield™ DC is a compact, lead-free solution for non-hazardous backflow prevention. Engineered with the contractor in mind, its reversible handles eliminate installation headaches in tight quarters, while its high-efficiency design manages flow with minimal pressure loss. This ASSE 1015 and CSA B64.5 certified assembly ensures superior durability and simplified maintenance through our zero-guesswork rebuild kits. Backed by our global reputation for innovation, it is the reliable choice for safeguarding potable water systems. connection: 1" NPT female. Maximum operating pressure: 175 psi. Maximum working temperature: 150 °F. Material: DZR low lead brass. SCIP code CODE UNDER ANALYSIS
304970A	1 1/4" NPT female
2D drawings pdf Download this file dwg Share this file Download this file Share Facebook Linkedin Twitter https://www.caleffi.com/sites/default/files/media/external-drawing/304970A%20%28dwg%29.dwg dxf Share this file Download this file Share Facebook Linkedin Twitter https://www.caleffi.com/sites/default/files/media/external-drawing/304970A%20%28dxf%29.dxf 3D models igs Share this file Download this file Share Facebook Linkedin Twitter https://www.caleffi.com/sites/default/files/media/external-drawing/304970A%20%28igs%29.igs stp Share this file Download this file Share Facebook Linkedin Twitter https://www.caleffi.com/sites/default/files/media/external-drawing/304970A%20%28stp%29.stp Tender text CALEFFI, 304970A, FlowShield™ DC. Testable double check backflow preventer The 3049 FlowShield™ DC is a compact, lead-free solution for non-hazardous backflow prevention. Engineered with the contractor in mind, its reversible handles eliminate installation headaches in tight quarters, while its high-efficiency design manages flow with minimal pressure loss. This ASSE 1015 and CSA B64.5 certified assembly ensures superior durability and simplified maintenance through our zero-guesswork rebuild kits. Backed by our global reputation for innovation, it is the reliable choice for safeguarding potable water systems. connection: 1 1/4" NPT female. Maximum operating pressure: 175 psi. Maximum working temperature: 150 °F. Material: DZR low lead brass. SCIP code CODE UNDER ANALYSIS
304980A	1 1/2" NPT female
2D drawings pdf Download this file dwg Share this file Download this file Share Facebook Linkedin Twitter https://www.caleffi.com/sites/default/files/media/external-drawing/304980A%20%28dwg%29.dwg dxf Share this file Download this file Share Facebook Linkedin Twitter https://www.caleffi.com/sites/default/files/media/external-drawing/304980A%20%28dxf%29.dxf 3D models igs Share this file Download this file Share Facebook Linkedin Twitter https://www.caleffi.com/sites/default/files/media/external-drawing/304980A%20%28igs%29.igs stp Share this file Download this file Share Facebook Linkedin Twitter https://www.caleffi.com/sites/default/files/media/external-drawing/304980A%20%28stp%29.stp Tender text CALEFFI, 304980A, FlowShield™ DC. Testable double check backflow preventer The 3049 FlowShield™ DC is a compact, lead-free solution for non-hazardous backflow prevention. Engineered with the contractor in mind, its reversible handles eliminate installation headaches in tight quarters, while its high-efficiency design manages flow with minimal pressure loss. This ASSE 1015 and CSA B64.5 certified assembly ensures superior durability and simplified maintenance through our zero-guesswork rebuild kits. Backed by our global reputation for innovation, it is the reliable choice for safeguarding potable water systems. connection: 1 1/2" NPT female. Maximum operating pressure: 175 psi. Maximum working temperature: 150 °F. Material: DZR low lead brass. SCIP code CODE UNDER ANALYSIS
304990A	2" NPT female
2D drawings pdf Download this file dwg Share this file Download this file Share Facebook Linkedin Twitter https://www.caleffi.com/sites/default/files/media/external-drawing/304990A%20%28dwg%29.dwg dxf Share this file Download this file Share Facebook Linkedin Twitter https://www.caleffi.com/sites/default/files/media/external-drawing/304990A%20%28dxf%29.dxf 3D models igs Share this file Download this file Share Facebook Linkedin Twitter https://www.caleffi.com/sites/default/files/media/external-drawing/304990A%20%28igs%29.igs stp Share this file Download this file Share Facebook Linkedin Twitter https://www.caleffi.com/sites/default/files/media/external-drawing/304990A%20%28stp%29.stp Tender text CALEFFI, 304990A, FlowShield™ DC. Testable double check backflow preventer The 3049 FlowShield™ DC is a compact, lead-free solution for non-hazardous backflow prevention. Engineered with the contractor in mind, its reversible handles eliminate installation headaches in tight quarters, while its high-efficiency design manages flow with minimal pressure loss. This ASSE 1015 and CSA B64.5 certified assembly ensures superior durability and simplified maintenance through our zero-guesswork rebuild kits. Backed by our global reputation for innovation, it is the reliable choice for safeguarding potable water systems. connection: 2" NPT female. Maximum operating pressure: 175 psi. Maximum working temperature: 150 °F. Material: DZR low lead brass. SCIP code CODE UNDER ANALYSIS