The ASCO Series 221, also known as 8221, with its unique slow-closing design, provides higher flow while increasing throughput in commercial applications. It reduces inventory by accommodating both hot and cold-water service, and is designed for quick, easy maintenance. Apply the 221 Series with confidence in high and low-temperature applications found in laundries, molding, sterilizers and autoclaves.

Specification
| Valve Actuation | Solenoid |
| Body Material | Brass |
| Media | Water |
| Pipe / Port Size | 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 |
| Voltage | 110 AC; 115 AC; 12 DC; 120 AC; 120 DC; 208 AC; 220 AC; 230 AC; 24 AC; 24 DC; 240 AC; 240 DC; 440 AC; 48 DC; 480 AC; 6 DC – 50/60 |