ASCO Valve 8221 Two-Way Slow Closing Solenoid Valves
Prices starting at:
Price
$274.00
Call for Availability
SKU
8221
Two-way pilot-operated slow-closing solenoid valves. Sizes 3/8" to 2-1/2". Normally open or normally closed operation. General service or hot water valves with brass body.
- Pilot-operated two-way normally closed or normally open valves
- Pipe sizes from 3/8" to 2-1/2"
- Snubber slows disc closing speed to protect system against water hammer damage
- Reduces pressure spike caused by water hammer without needing suppressors or other controls in most water systems
- For general service water (to 180°F) or hot water (to 210°F) applications
General Service Valves
Water service valves require a minimum 5 PSI operating pressure differential to open. Once open, they will remain open with 3 PSI differential pressure.
| Pipe Size (In.) |
Orifice Size (In.) |
Operating Pressure Differential (Water) |
Cv Flow Factor |
Max. Fluid Temp. (°F) |
Watt Rating/ Class of Coil Insulation |
Solenoid Valve | Repair Kit | Replacement Coil |
|---|---|---|---|---|---|---|---|---|
| Click for Price and Availability |
Click for Price and Availability |
Click for Price and Availability |
||||||
| Normally Closed (Closed when de-energized), General Service Valves | ||||||||
| 3/8 | 9/16 | 5-150 PSI | 3 | 180 | 6.1/F | 8221G001 | 310387 | 238210-032-D |
| 1/2 | 9/16 | 5-150 PSI | 3.5 | 180 | 6.1/F | 8221G003 | 310387 | 238210-032-D |
| 3/4 | 3/4 | 5-150 PSI | 5.5 | 180 | 6.1/F | 8221G005 | 310388 | 238210-032-D |
| 1 | 1 | 5-150 PSI | 11.5 | 180 | 6.1/F | 8221G007 | 310420 | 238210-032-D |
| 1-1/4 | 1-1/8 | 5-150 PSI | 13 | 180 | 6.1/F | 8221G009 | 310506 | 238210-032-D |
| 1-1/2 | 1-1/4 | 5-150 PSI | 24 | 180 | 6.1/F | 8221G011 | 310421 | 238210-032-D |
| 2 | 1-3/4 | 5-150 PSI | 36 | 180 | 6.1/F | 8221G013 | 310422 | 238210-032-D |
| 2-1/2 | 1-3/4 | 5-150 PSI | 38 | 180 | 6.1/F | 8221G015 | 310422 | 238210-032-D |
| Normally Open (Open when de-energized), General Service Valves | ||||||||
| 3/8 | 9/16 | 5-150 PSI | 3 | 180 | 16.1/F | 8221G021 | 310412 | 272610-032-D |
| 1/2 | 9/16 | 5-150 PSI | 3.5 | 180 | 16.1/F | 8221G023 | 310412 | 272610-032-D |
| 3/4 | 3/4 | 5-150 PSI | 5.5 | 180 | 16.1/F | 8221G025 | 310413 | 272610-032-D |
| 1 | 1 | 5-150 PSI | 11.5 | 180 | 16.1/F | 8221G027 | 310426 | 272610-032-D |
| 1 1/4 | 1-1/8 | 5-150 PSI | 13 | 180 | 16.1/F | 8221G029 | 310508 | 272610-032-D |
| 1 1/2 | 1-1/4 | 5-150 PSI | 24 | 180 | 16.1/F | 8221G031 | 310427 | 272610-032-D |
| 2 | 1-3/4 | 5-150 PSI | 36 | 180 | 16.1/F | 8221G033 | 310428 | 272610-032-D |
| 2-1/2 | 1-3/4 | 5-150 PSI | 38 | 180 | 16.1/F | 8221G035 | 310428 | 272610-032-D |
Hot Water Service Valves
Water service valves require a minimum 5 PSI operating pressure differential to open. Once open, they will remain open with 3 PSI differential pressure.
| Pipe Size (In.) |
Orifice Size (In.) |
Operating Pressure Differential (Water) |
Cv Flow Factor |
Max. Fluid Temp. (°F) |
Watt Rating/ Class of Coil Insulation |
Solenoid Valve | Repair Kit | Replacement Coil |
|---|---|---|---|---|---|---|---|---|
| Click for Price and Availability |
Click for Price and Availability |
Click for Price and Availability |
||||||
| Normally Closed (Closed when de-energized), Hot Water Service Valves | ||||||||
| 3/8 | 9/16 | 5-150 PSI | 3 | 210 | 6.1/F | 8221G001HW | 310387-HW | 238210-032-D |
| 1/2 | 9/16 | 5-150 PSI | 3.5 | 210 | 6.1/F | 8221G003HW | 310387-HW | 238210-032-D |
| 3/4 | 3/4 | 5-150 PSI | 5.5 | 210 | 6.1/F | 8221G005HW | 310388-HW | 238210-032-D |
| 1 | 1 | 5-150 PSI | 11.5 | 210 | 6.1/F | 8221G007HW | 310420-HW | 238210-032-D |
| 1-1/4 | 1-1/8 | 5-150 PSI | 13 | 210 | 6.1/F | 8221G009HW | 310506-HW | 238210-032-D |
| 1-1/2 | 1-1/4 | 5-150 PSI | 24 | 210 | 6.1/F | 8221G011HW | 310421-HW | 238210-032-D |
| 2 | 1-3/4 | 5-150 PSI | 36 | 210 | 6.1/F | 8221G013HW | 310422-HW | 238210-032-D |
| 2-1/2 | 1-3/4 | 5-150 PSI | 38 | 210 | 6.1/F | 8221G015HW | 310422-HW | 238210-032-D |
| Normally Open (Open when de-energized), Hot Water Service Valves | ||||||||
| 3/8 | 9/16 | 5-150 PSI | 3 | 210 | 16.1/F | 8221G021HW | 310412-HW | 272610-032-D |
| 1/2 | 9/16 | 5-150 PSI | 3.5 | 210 | 16.1/F | 8221G023HW | 310412-HW | 272610-032-D |
| 3/4 | 3/4 | 5-150 PSI | 5.5 | 210 | 16.1/F | 8221G025HW | 310413-HW | 272610-032-D |
| 1 | 1 | 5-150 PSI | 11.5 | 210 | 16.1/F | 8221G027HW | 310426-HW | 272610-032-D |
| 1-1/4 | 1-1/8 | 5-150 PSI | 13 | 210 | 16.1/F | 8221G029HW | 310508-HW | 272610-032-D |
| 1-1/2 | 1-1/4 | 5-150 PSI | 24 | 210 | 16.1/F | 8221G031HW | 310427-HW | 272610-032-D |
| 2 | 1-3/4 | 5-150 PSI | 36 | 210 | 16.1/F | 8221G033HW | 310428-HW | 272610-032-D |
| 2-1/2 | 1-3/4 | 5-150 PSI | 38 | 210 | 16.1/F | 8221G035HW | 310428-HW | 272610-032-D |
| Valve Function | General Service, Hot Water, Slow Closing |
|---|---|
| Solenoid Valve Type | Two Way |
| Operation | Normally Open, Normally Closed |
| Body Material | Brass |
| Pipe Size | 3/8 Inch, 1/2 Inch, 3/4 Inch, 1 Inch, 1-1/4 Inch, 1-1/2 Inch, 2 Inch, 2-1/2 Inch |
| Valve Media | Water-Clean Liquids |