Van nhựa phá chân không - Plast-O-Matic

Vacuum Breakers

Series VB/VBM Patented diaphragm design assures dependable, repetitive, bubble-tight sealing to protect enclosed tanks from collapse or structural damage during draining. Also eliminates siphoning of dangerous fluids,and prevents vacuum damage to sensitive instruments and filters. 1/2″, 3/4″ and 1″ in a wide range of materials and connection types.

Series VBS PFA encapsulated spring and special poppet provide performance identical to VB/VBM with same protection for tanks and piping systems against hazards, damage and financial losses caused by unwanted vacuum conditions. 1-1/2″ to 4″ sizes in a wide range of materials and connection types.

Features/Benefits with Proper Installation:
• Designed to protect enclosed tanks from collapse or structural damage during draining.
• Eliminates siphoning of dangerous fluids.
• Prevents vacuum which can cause damage to sensitive instruments and filters.
• Normally-closed design prevents fugitive emissions from leaving system.
• Insurance against replacement of damaged expensive equipment... avoids critical system downtime.
• Patented diaphragm design assures dependable, repetitive, bubbletight sealing in VBM and VB; PFA encapsulated spring and special poppet provide identical performance in VBS design.
• For corrosive or ultra-pure liquid applications.
• Sizes: 1/2", 3/4", 1", 11/2", 2" and 3".
Materials of Construction:
Series VBM Vacuum Breakers are molded of type 1, grade 1, PVC (Polyvinyl Chloride), Glass-filled Polypropylene, Kynar® PVDF and Corzan® CPVC in sizes 1/2", 3/4" and 1". A machined version, Series VB is available in PTFE in sizes 3/4" and 1". Diaphragms are of EPDM or FKM (comparable to Viton® barnd). VBS Vacuum Breakers are available in standard PVC (Polyvinyl Chloride), Natural Polypropylene, Kynar® PVDF, and Corzan® CPVC in sizes 11/2", 2", and 3". Standard dust caps on PVDF models are natural polypropylene; PVDF is optional. Seals are EPDM or FKM. Threaded or socket connections are standard on all models.
Design:
The Plast-O-Matic VBM Vacuum Breakers have only one moving part – the patented self-sealing diaphragm, and this provides both design simplicity and maximum operating dependability. This normally-closed design seals in the identical location every time producing a very dependable, long-life seal. Series VBS Vacuum Breakers feature a corrosion resistant PFA encapsulated spring which acts on a poppet seal that neither sticks nor chatters. Maximum working pressure is 100 PSI @ 75°F (6,9 bar @ 24°C). See pressure/temperature ratings on reverse side. Spring material (non-wetted) is 303-304 stainless steel.
Operation and Installation:
Plast-O-Matic Vacuum Breakers feature a patented, normally-closed, design that can be mounted in any position; however, upright is recommended. For enclosed tank applications, mounting should be at the highest point of the tank.