This 8-piece valve stem kit is an easy way to connect a vinyl or polyurethane vacuum bag to the lock-on vacuum connector and vacuum hose. Each stem has double-width air channels cut from the center intake to direct airflow quickly and evenly from the vacuum bag. The kit includes 1 zinc-plated brass valve stem, 2 zinc-plated heavy duty washers, 1 zinc-plated washer and nut. A Viton O-ring is also included. Lastly, the kit includes 2 "kiss-cut" medium density PVC grommets.

The grommets are attached to the washers with an acrylic adhesive which prevent them from creeping if the vacuum bag stretches. With only a bit more than hand pressure, this combination also prevents elongation of the opening where the stem is placed. No cementing is needed and because of this, a valve stem can be moved from one bag to another if needed.

While other companies are selling something similar for $18 to $31, our unit is less than half of their price and works twice as well. Our unit allows the lock-on vacuum connector to be attached with simple finger pressure.

Update: We now offer a new "flush-mount" valve stem assembly. Click here for details.

Instructions

1. Remove the zinc-plated nut, washer, and the top gasket ring from the valve stem assembly. Do not separate the metal washer from the gasket material.
2. Insert the valve stem (with the lower gasket ring in place) through the hole in the vacuum bag.
3. Place the other gasket ring back onto the valve stem with gasket side against the vacuum bag material.
4. Install the washer and tighten the locking nut with finger pressure. Then turn the nut one full rotation with a wrench.