Macon vacuum breaker for one-pipe steam valves.

McDonnell & Miller model number TC-V is a vacuum breaker for model number TC-4 Test-N-Check valves.

Dunham-Bush model VB-1 3/8" vacuum breaker.

Brass vacuum breaker with stainless steel ball and screen. 3/8" IPM x 1/4" IPF outlet, rated to 300 psi and 365 degrees F.

Brass vacuum breaker with stainless steel ball and screen. 1/2" IPM x 3/8" IPF outlet, rated to 300 psi and 365 degrees F.

Brass vacuum breaker with stainless steel ball and screen. 3/4" IPM x 1/2" IPF outlet, rated to 300 psi and 365 degrees F.

Number 800QT, 1/2"IPF angle pattern bronze body vacuum breaker. Maximum pressure 150lbs, 140 degree F.

Number 288A, 1/4"IPF angle pattern bronze body vacuum breaker. For hot or cold water. Maximum pressure 125lbs, 180 degree F.

Number 288A, 1/4"IPF angle pattern chrome plated bronze body vacuum breaker. For hot or cold water. Maximum pressure 125lbs, 180 degree F.

Number 288A, 3/8"IPF angle pattern bronze body vacuum breaker. For hot or cold water. Maximum pressure 125lbs, 180 degree F.

Number 288A, 3/8"IPF angle pattern chrome plated bronze body vacuum breaker. For hot or cold water. Maximum pressure 125lbs, 180 degree F.

Number 288A, 1/2"IPF angle pattern bronze body vacuum breaker. For hot or cold water. Maximum pressure 125lbs, 180 degree F.

Number 288A, 1/2"IPF angle pattern chrome plated bronze body vacuum breaker. For hot or cold water. Maximum pressure 125lbs, 180 degree F.

Number 288A, 3/4"IPF angle pattern bronze body vacuum breaker. For hot or cold water. Maximum pressure 125lbs, 180 degree F.

Number 288A, 3/4"IPF angle pattern chrome plated bronze body vacuum breaker. For hot or cold water. Maximum pressure 125lbs, 180 degree F.

Number 8A, 3/4" male x female hose thread vacuum breaker. For sillcock hose thread connection, non-removable. Maximum pressure 125lbs, 180 degree F.

Number 8AC, 3/4" male x female hose thread chrome plated vacuum breaker. For sillcock hose thread connection, non-removable. Maximum pressure 125lbs, 180 degree F.

Number NF8, 3/4" male x female hose thread vacuum breaker. For sillcock hose thread connection, which permits for manual draining for freezing conditions. Maximum pressure 125lbs, 180 degree F.

Number NLF9, 3/8" male inlet x 3/8" female outlet laboratory faucet vacuum breaker. Polished chrome finish. Maximum pressure 125lbs.

Cash Acme V-101 Series anti-siphon vacuum breaker with 1/2" NPT female connections. This vacuum breaker features a bronze body and silicone seat. It is designed for maximum intermittent water pressure of 125 psi, and is suitable for temperatures up to 212°F. It is not for continuous pressure use.

Cash Acme V-101 Series anti-siphon vacuum breaker with 3/4" NPT female connections. This vacuum breaker features a bronze body and silicone seat. It is designed for maximum intermittent water pressure of 125 psi, and is suitable for temperatures up to 212°F. It is not for continuous pressure use.

Cash Acme V-101 Series anti-siphon vacuum breaker with 1" NPT female connections. This vacuum breaker features a bronze body and silicone seat. It is designed for maximum intermittent water pressure of 125 psi, and is suitable for temperatures up to 212°F. It is not for continuous pressure use.

Cash Acme V-101C Series anti-siphon vacuum breaker with 1/2" NPT female connections and a polished chrome finish. This vacuum breaker features a bronze body and silicone seat. It is designed for maximum intermittent water pressure of 125 psi, and is suitable for temperatures up to 212°F. It is not for continuous pressure use.

Cash Acme V-101C Series anti-siphon vacuum breaker with 3/4" NPT female connections and a polished chrome finish. This vacuum breaker features a bronze body and silicone seat. It is designed for maximum intermittent water pressure of 125 psi, and is suitable for temperatures up to 212°F. It is not for continuous pressure use.

Cash Acme V-3 Series hose bibb atmospheric backflow preventer with a 3/4" NPT male connection. This backflow preventer/vacuum breaker is designed to prevent dangerous back-siphonage and backflow into a potable water supply. Its maximum pressure is 125 psi and it has a maximum temperature is 180°F.

Cash Acme V-3C Series hose bibb atmospheric backflow preventer with a 3/4" NPT male connection and chrome-plated finish. This backflow preventer/vacuum breaker is designed to prevent dangerous back-siphonage and backflow into a potable water supply. Its maximum pressure is 125 psi and it has a maximum temperature is 180°F.

Cash Acme VB-222 Series self-draining hose connection vacuum breaker with a 3/4" threaded connection and locking screw. This vacuum breaker is designed to prevent dangerous back-siphonage and backflow into a potable water supply system. It automatically self-drains when all attachments are removed completely from the valve

Cash Acme VB-222 Series self-draining hose connection vacuum breaker with a 3/4" threaded connection, locking screw, and chrome-plated finish. This vacuum breaker is designed to prevent dangerous back-siphonage and backflow into a potable water supply system. It automatically self-drains when all attachments are removed completely from the valve

Watts number N36 1/2" IPF vacuum relief valve. This valve features a maximum water pressure of 200 psi, maximum temperature of 250°F, and opens at less than 1/2" vacuum. It is also suitable for steam service to 15 psi and has a venting capacity of 13.5 CFM. Vacuum relief valves automatically vent a system if a vacuum occurs and will automatically vent a closed system to atmosphere when a vacuum is created preventing conditions where water could be siphoned from the system.

Watts number N36 3/4" IPF vacuum relief valve. This valve features a maximum water pressure of 200 psi, maximum temperature of 250°F, and opens at less than 1/2" vacuum. It is also suitable for steam service to 15 psi and has a venting capacity of 20 CFM. Vacuum relief valves automatically vent a system if a vacuum occurs and will automatically vent a closed system to atmosphere when a vacuum is created preventing conditions where water could be siphoned from the system.

Barnes & Jones Vacuum Breaker model 3856 1/2"pipe 125lb maximum operating pressure.

Barnes & Jones Vacuum Breaker model 3875 3/4"pipe 125lb maximum operating pressure.

Barnes & Jones Vacuum Breaker model 3902 1/4"pipe 125lb maximum operating pressure.

Barnes & Jones Vacuum Breaker model 3901 1/8"pipe 125lb maximum operating pressure.

Spirax-Sarco Vacuum Breaker model VB-14 1/2"pipe with 1/8" vent port 210lb. maximum operating pressure.

Spirax-Sarco Vacuum Breaker model VB-21 1/2"pipe with 1/8" vent port 304lb. maximum operating pressure.

Sloan Valve vacuum breaker with 3/4" x 15" tailpiece.

Sloan Valve vacuum breaker with 1-1/4" x 21-1/2" tailpiece.

Sloan Valve vacuum breaker.

Sloan Valve vacuum breaker with 1-1/2" x 13-1/2" tailpiece.

Sloan Valve vacuum breaker with 1-1/2" x 21-1/2" tailpiece.

Hoffman 62 vacuum breaker, 3/4"NPT male straight shank, 150lb maximum, adjustable from 1/4" to 20" vacuum, for closed vessels and piping systems to control inducted vacuum.