CGA/DISS | 30 Series Cylinder Valve Gaskets
DISS, the Diameter Index Safety System in CGA V-1, is a gas keyed outlet connection used on semiconductor and high purity gas cylinders, joining a regulator or pigtail straight to the cylinder valve. The 30 Series is the gasket that seals that connection, sized to the DISS number, in nickel or PCTFE.
Key features
- Cylinder valve gasket sized to the CGA/DISS number
- Nickel or PCTFE, chosen for the gas
- Fits the 40 Series and 45 Series connectors
- Listed with the CGA/DISS range manufactured to CGA V-1
Enquire about this product
Priced to your specification. Most enquiries are answered the same working day.
Request a quoteCGA/DISS 30 Series gaskets, the sealing element for the cylinder valve outlet on DISS connections used with semiconductor and high purity gas cylinders. Each gasket is sized to the CGA/DISS number of the valve it seals and comes in two materials, nickel or PCTFE, chosen to suit the gas. They fit the 40 Series and 45 Series connectors, which carry the nipple and nut, and they are listed with the CGA/DISS connector range, made to CGA V-1. If you are looking for a DISS valve rather than its gasket, the Rotarex D3 series on our UHP cylinder valves page includes valves with DISS outlets.
Specification
| Standard | CGA V-1 DISS |
|---|---|
| Material | Nickel or PCTFE |
| Cylinder Connection | Sized to the CGA/DISS number of the cylinder valve |
Downloads
No documents on file for this product yet.
Common questions
- Is this the part if I was asked for a DISS valve?
- No, and it is worth checking which you need. This is the gasket that seals a DISS connection between the connector and the cylinder valve outlet. A DISS valve is the cylinder valve itself, cut with a DISS outlet; the Rotarex D3 series on our ultra high purity cylinder valves page includes valves with DISS outlets. The connector that joins the two is the DISS 40 Series.
- Nickel or PCTFE, which gasket do I order?
- Both materials are available, each sized to the DISS number of the valve, and the choice follows the gas: tell us the gas and the outlet number and we will match the gasket to the connector you are using. They fit the 40 Series and the 45 Series connectors and are made to CGA V-1.
- Which DISS numbers do the 30 Series gaskets cover?
- The same range as our connectors, outlet numbers 632 to 642 and 712 to 728: the semiconductor process gases on the 600 numbers and the inert gases, hydrogen, carbon dioxide, oxygen, chlorine and ammonia on the 700 numbers. Each gasket is sized to one DISS number, so quote the number stamped on the cylinder valve when you order.
