These high quality Through Bag Connectors are a quick and reliable way to connect vacuum hoses to vacuum bags.
The vacuum bag connector is made up of two halves, one of which is placed inside the vacuum bag, the other is placed on the outside. A small hole is made in the vacuum bag and the mandrel of the connector passes through this hole. The two halves twist together clamping around a rubber seal, providing a solid and reliable air-tight seal or vacuum bagging port.
These high quality connectors can be re-used indefinitely.
 
These high-performance quick-release quick disconnect vacuum couplings are designed to allow a fast and reliable means of attaching vacuum hoses to through-bag connectors, vacuum pumps and other vacuum equipment.
Quick release vacuum connector is supplied as two halves - a male and a female; when connected together they make an airtight seal and allow air to pass through. When disconnected they automatically close internal valves, preventing any air leakage past either side of the coupling. These couplings are custom manufactured for composites use including high temperature/pressure autoclave application. The seals are silicone and PTFE allowing them to be used at service temperatures up to 204°C/400°F.
These quick connect vacuum fittings are typically used to connect vacuum hoses to through-bag connectors in vacuum bagging applications; the male coupling is assembled together with the through-bag connector and the female coupling is attached to a vacuum hose using a hose-tail barb. When vacuum is pulled on the hose, the hose will remain sealed until it is connected to the male coupling on the through bag connector, once connected the air will be drawn from the bag, when full vacuum is achieved the hose can be disconnected, instantly sealing both the vacuum bag and the vacuum hose. This is particularly useful when moving projects from the bagging table to an oven or autoclave or performing a 'vacuum drop' leak test.
 
How to Use
Connection is very straight-forward, simply pull back the spring-loaded outer ring on the female fitting and push the coupling together, then allow the ring to spring back into place which will lock the coupling. To separate the coupling pull the ring back and the coupling will spring apart.
 
Fittings
The female side of the Quick-Release Vacuum Coupling are provided with 6mm  hose tail barb.
Always use PTFE tape to seal joints between any vacuum fittings.
Conventional Use
These Quick-Release Vacuum Couplings are most commonly used with durable vacuum hoses. For standard out-of-autoclave use they can be used with an 6mm Hose Tail Barb and then connected to a length of 8mm ID Silicone Vacuum Hose.