In-stock parts
Order by 2PM MST
In-stock parts
Order by 2PM MST
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2045 West Buckeye Road
Phoenix AZ 85009
United States
The ATP 177-300 inline control valve provides air-to-open operation in a normally closed, 3-inch grooved configuration. It is intended for gravity-dump water distribution, particularly spreader-bar installations where the valve controls water entering the bar.
Its aluminum body and grooved connections suit a matching inline plumbing arrangement. A 1/4-inch air hose fitting is required and is not included. This valve is not recommended for spray-head use. Match the valve to the job rather than selecting it by pipe size alone.
| Feature | Benefit |
|---|---|
| Normally closed, air-to-open operation | Use an air control circuit to open the valve when discharge is needed. |
| 3-inch grooved ends | Connect to a matching grooved inline water circuit. |
| Serviceable design | A dedicated repair kit is available for later valve maintenance. |
| Specification | Value |
|---|---|
| Manufacturer part number | 177-300 |
| Nominal size | 3 inches |
| Connection | Grooved |
| Body | Aluminum |
| Operation | Air-to-open; normally closed |
| Component or application | Selection guidance |
|---|---|
| Gravity-dump spreader bar | Primary application for this inline valve. |
| Air hose fitting | 1/4-inch fitting required; order separately. |
| Repair kit | Available separately for servicing an existing valve. |
| Check | What to confirm |
|---|---|
| Application | Use for an appropriate gravity-dump arrangement; not recommended for spray heads. |
| Plumbing | Check groove size, coupling compatibility, and available installation space. |
| Air controls | Confirm control arrangement and supply requirements for your installation before connecting the valve. |
Need help confirming your selection? Contact UnitedBuilt through online chat, email parts@unitedbuilt.com, or call 602-253-7750 with your equipment model, existing part number, and installation photos.
| Material | Aluminum |
|---|---|
| Country of Origin | China (subject to change) |
| Weight | 10.35 lb |
| Alternate part number |
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