WOODFORD 34H-D NIDEL® Vacuum Breaker User Manual
- June 3, 2024
- WOODFORD
Table of Contents
WOODFORD 34H-D NIDEL® Vacuum Breaker
Anti-Siphon Vacuum Breaker
- Model 34H
- Model 34HD
The NIDEL® Model 34H anti-siphon vacuum breaker is intended for
irrigation purposes and designed to protect hose connections from
contamination where temperatures do not go below freezing. Uses include
laundry tubs, utility sinks, boiler room hose bibbs and outside hose bibbs in
non-freezing areas.
The NIDEL® Model 34HD anti-siphon vacuum breaker is intended for
irrigation purposes and designed to protect hose connections from
contamination where freezing temperatures are expected. Manual draining is
required and provides easy, sure drainage during cold weather. Uses include
outside hose bibbs, wash racks, dairy barns and swimming pool areas.
HOSE CONNECTION VACUUM BREAKER:
- Nidel® Model 34H & 34HD
- ASSE 1011 Approved
- Listed by IAPMO
- Approved by Canadian Standards Association
- One check valve
- Exterior Finish: Brass (BR). Optional: Chrome Plated (CH)
- Construction: Brass and Stainless Steel
- Check Valve : Molded rubber diaphragm
- Theft Resistant : Stainless steel stop collar and stop screw. (Model 34HD)
- Inlet: 3/4″ female hose thread
- Outlet Nozzle : 3/4″ male hose thread
- Max Pressure – 125 p.s.i.
- Max Temperature – 120° F
Hose Connection Backflow Preventer
- Model 37HD1
- Model 37HD2
The NIDEL® Model 37HD1 / 37HD2 hose connection backflow preventers are intended for irrigation purposes and designed to protect hose connections from backflow contamination in freezing and non-freezing conditions. Manual draining is required and provides easy, sure drainage during freezing weather. Uses include outside hose bibbs, wash racks, dairy barns and swimming pool areas
HOSE CONNECTION BACKFLOW PREVENTER:
- Nidel® Model 37HD1 & 37HD2
- ASSE 1052 Approved
- Listed by IAPMO
- Field Testable (see instruction sheet)
- Two check valves
- No spray back
- Exterior Finish : Brass (BR). Optional: Chrome Plated (CH)
- Construction: Brass and Stainless Steel
- Check Valves : (2) Molded rubber diaphragms
- Non-Removable : Bushing attached with LOCKTITE®
- Theft Resistant : Stainless steel stop collar and stop screw. (Model 37HD2)
- Inlet: 3 /4″ female hose thread
- Outlet Nozzle : 3/4″ male hose thread
- Max Pressure – 125 p.s.i.
- Max Temperature – 120° F
NOTICE: These products, as with all 1011, 1019, 1052 and 1053 ASSE listed devices, are not to be subjected to continuous water pressure. Replacement is recommended every 3-5 years. After use, turn device to open drain vents or faucet may freeze and burst.
Manufactured under one or more of the following patents: U.S. Patents:
3,414,001; 4,178,956; 4,316,481; 4,532,954 D216,790; D216,791; D277,365;
D277,366; Canada Patents: 852,529; 865,995; 1,146,438. Other patents pending.
When ordering, specify model and finish