The ASCO Series 220 steam and hot water valves provides up to 60% more flow than competitive offerings. That means a 3/4-inch valve flow from ASCO equals the competitors 1-inch flow. The Series 220 floating PTFE diaphragm provides positive sealing and improved durability – up to four times longer than other valves. Its threaded bonnet is easy to remove for quick inspection and serviceability reducing downtime and maintenance costs.

Specification
| Valve Actuation | Solenoid |
| Body Material | Brass |
| Media | Hot Water, Steam |
| Pipe / Port Size | 1/2 “; 3/8 “; 3/4 “; 1 “; 1 1/4 “; 1 1/2 “; 2 “; 2 1/2 “ |
| Port Type | NPTF |
| Function | 2 way – 2/2 Normally Closed, 2 way – 2/2 Normally Open |
| Flow | From 2.0 Cv to 6.0 Cv, From 6.0 Cv to 14.0 Cv, Over 14.0 Cv |
| Voltage | 110 AC, 12 DC, 120 AC, 120 DC, 208 AC, 220 AC, 24 DC, 24 AC, 240 AC, 48 DC, 480 AC – 50, 50/60, 60 |