The gas and water valves that we sell are available with color-coded index buttons. You may specify different indexing on the Comments line when you submit your order (or email us immediately after placing your order.
| Standard Indexing | |||
|---|---|---|---|
| Substance | Index Color | Letter color | Symbol |
| Air | Orange | Black | AIR |
| Carbon Dioxide | Pink | Black | CO2 |
| Cold Water | Green | White | CW |
| Deionized Water | White | Black | DI |
| Distilled Water | White | Black | DW |
| (Natural) Gas | Blue | White | GAS |
| Hot Water | Red | White | HW |
| Hydrogen | Pink | Black | HYD |
| Nitrogen | Brown | White | NIT |
| Oxygen | Lt Green | Black | OXY |
| Steam | Black | White | STM |
| Vacuum | Yellow | Black | VAC |
Also available by special request. A $10.00 setup charge per index may apply to non-standard indices - so if you order 23 CWR and 4 ACET buttons, that will be an additional $20.00:
| Other Indexing Options | |||
|---|---|---|---|
| Substance | Index Color | Letter color | Symbol |
| Acetylene | Violet | White | C2H2 |
| Acetylene | Violet | White | ACET |
| Ammonia | Lt Green | Black | NH3 |
| Argon | Violet | White | AR |
| Aspirator | Green | White | ASP |
| Butane | Lt Blue | Black | BUT |
| Carbon Monoxide | Silver | Black | CO |
| Chilled Water | Green | White | CH WAT |
| Chilled Water Supply | Green | White | CHWS |
| Chilled Water Supply | Green | White | CWS |
| Chilled Water Return | Green | White | CHWR |
| Chilled Water Return | Green | White | CWR |
| Compressed Air | Orange | Black | CA |
| Cylinder Gas | Lt Blue | Black | CYL GAS |
| Glycol Supply | Lt Green | Black | GLY SUP |
| Glycol Return | Lt Green | Black | GLY RET |
| Helium | Black | White | HE |
| High Vacuum | Yellow | Black | HI VAC |
| High Vacuum | Yellow | Black | HVAC |
| Hydrogen | Pink | Black | H2 |
| Hydrogen | Lt Blue | Black | H |
| Hydrogen | Lt Blue | Black | H2 |
| Hydrogen | Lt Blue | Black | HYD |
| Hydrogen Sulfide | Black | White | H2S |
| Ice Water | White | Black | IW |
| Industrial Cold Water | Green | White | ICW |
| Industrial Hot Water | Red | White | IHW |
| Isobutene | Silver | Black | ISO |
| Lab Air | Orange | Black | LA |
| Lab Gas | Blue | White | LG |
| Lab Vacuum | Yellow | Black | LV |
| Low Vacuum | Yellow | Black | LO VAC |
| Low Vacuum | Yellow | Black | LVAC |
| Methane | Lt Blue | Black | CH4 |
| Natural Gas | Blue | White | NAT GAS |
| Nitrogen | Gray | Black | NIT |
| Nitrogen | Gray | Black | N2 |
| Nitrogen | Brown | White | N |
| Nitrogen (Cylinder) | Brown | White | NC |
| Nitrogen (Dewar) | Brown | White | ND |
| Nitrous Oxide | Lt Green | Black | N2O |
| Oxygen | Lt Green | Black | O2 |
| Phosphorous | Tan | Black | P |
| Process Water | Green | White | PW |
| Propane | Pink | Black | PRO |
| Purified Water | White | Black | PW |
| Reverse Omosis | White | Black | RO |
| Special Gas | Lt Blue | Black | SG |
| Sulphur Dioxide | Tan | Black | SO2 |
| Tempered Water | Green | White | TW |