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SL-7125
SHUANGLIN
SHUANGLIN VALVE presents our brass vacuum breaker valve — a compact, PN16-rated safety device engineered to protect piping systems from the damaging effects of negative pressure (vacuum). When vacuum conditions occur in a pipeline — due to pump shut-off, rapid draining, or temperature change — this vacuum breaker valve automatically opens to admit air, preventing pipe collapse, backflow, and contamination.
As a professional brass valve manufacturer, SHUANGLIN VALVE supplies this vacuum breaker to distributors, wholesalers, and system integrators worldwide, with sizes ranging from DN15 to DN50 and both BSP and NPT thread options to fit international piping standards.
✅ Reliable Vacuum Protection — Automatically admits air when negative pressure occurs, preventing pipe collapse and equipment damage
✅ Backflow & Contamination Prevention — Built-in check function stops backsiphonage, protecting clean water and process fluid from contamination
✅ Compact Vertical Design — Space-saving structure allows easy installation directly on top of the pipeline
✅ Corrosion & Pressure Resistant — Solid brass body rated to PN16, suitable for demanding water, steam, and liquid systems
✅ Wide Size Range — Available from DN15 to DN50 to suit a variety of pipeline diameters
✅ Dual Thread Standard — Supports both BSP and NPT threads, compatible with piping systems across global markets
✅ Low Maintenance — Simple internal structure with minimal moving parts, reducing the need for frequent servicing
The SHUANGLIN VALVE vacuum breaker valve is widely used in:
Water supply and distribution systems
Steam and condensate piping systems
Industrial process liquid lines
Irrigation and agricultural water systems
Pump discharge and suction lines requiring vacuum protection
A vacuum breaker valve is typically installed vertically at the highest point of a pipeline or directly on top of a pump or tank connection. Under normal operating pressure, the valve remains closed. When negative pressure (vacuum) develops in the system — for example, when a pump shuts off or a line drains rapidly — the pressure difference lifts the internal valve disc, opening a vent that allows outside air to enter the pipeline. This breaks the vacuum, equalizes pressure, and prevents backsiphonage of contaminated fluid into the clean supply line. Once normal pressure is restored, the valve closes automatically, sealing the system.
Payment Terms: T/T (Bank Transfer)
In-Stock Lead Time: 7 days
Custom Order Lead Time: 30 days
Shipping: Sea/Air freight available, customs clearance support provided
SHUANGLIN VALVE provides a 1-year warranty on all vacuum breaker valves. In case of any manufacturing defect, we offer free replacement or repair. OEM/ODM customization is available — send us your drawings or samples for a tailored quotation.
Q: What is a vacuum breaker valve used for? A vacuum breaker valve protects piping systems from damage caused by negative pressure. It automatically admits air into the line when a vacuum forms, preventing pipe collapse and backflow contamination.
Q: Where should a vacuum breaker be installed? It is typically installed vertically at the highest point of a pipeline, or directly above a pump, tank, or equipment connection where vacuum conditions are most likely to occur.
Q: What thread types are available? SHUANGLIN VALVE offers both BSP (British Standard Pipe) and NPT (National Pipe Thread) options to suit different regional piping standards.
Q: Do you accept custom sizes or OEM branding? Yes, SHUANGLIN VALVE supports OEM/ODM services including custom sizing, branding, and packaging. Please contact us with your requirements for a quotation.
Contact SHUANGLIN VALVE's sales team for a detailed quotation, technical drawings, or samples.
