About Gradual On/Off Valves
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High-Pressure Clamp-On Connectors

- For Use With: Bases, Drinking Water, Mild Acids, Salt Solutions
- Temperature Range: -20° to 180° F
- Specifications Met:
Pipe Size of 1/2-2: ASTM A307, ASTM A536, AWWA C-219, NSF/ANSI 61
Pipe Size of 3-8: ASTM A513, ASTM A53, ASTM A715, AWWA C-219, NSF/ANSI 61 - For Pipe Material: Iron, Steel, PVC Plastic
These heavy duty steel connectors are designed for high-pressure applications. Use them to connect rigid pipe of the same or different materials. They meet NSF/ANSI 61 safety standards for use with drinking water systems. To install, center the connector over two pipe ends and tighten the bolts with a wrench. They allow limited expansion and contraction; they do not restrain side-to-side movement.
For technical drawings and 3-D models, click on a part number.
For Pipe OD | For Pipe Size | Lg. | No. of Bolts | Max. Pressure | Max. Vacuum | Material | Gasket Material | Each | |
0.84" | 1/2 | 7" | 2 | 500 psi @ 72° F | 15 in. of Hg @ 72° F | Steel | Buna-N Rubber | 0000000 | 000000 |
1.05" | 3/4 | 7" | 2 | 500 psi @ 72° F | 15 in. of Hg @ 72° F | Steel | Buna-N Rubber | 0000000 | 00000 |
1.315" | 1 | 7" | 2 | 500 psi @ 72° F | 15 in. of Hg @ 72° F | Steel | Buna-N Rubber | 0000000 | 00000 |
1.66" | 1 1/4 | 7" | 2 | 500 psi @ 72° F | 15 in. of Hg @ 72° F | Steel | Buna-N Rubber | 0000000 | 00000 |
1.9" | 1 1/2 | 7" | 2 | 500 psi @ 72° F | 15 in. of Hg @ 72° F | Steel | Buna-N Rubber | 0000000 | 00000 |
2.38" | 2 | 8" | 2 | 500 psi @ 72° F | 15 in. of Hg @ 72° F | Steel | Buna-N Rubber | 0000000 | 000000 |
3 1/2" | 3 | 6" | 3 | 500 psi @ 72° F | 15 in. of Hg @ 72° F | Steel | Buna-N Rubber | 0000000 | 000000 |
4 1/2" | 4 | 6" | 4 | 500 psi @ 72° F | 15 in. of Hg @ 72° F | Steel | Buna-N Rubber | 0000000 | 000000 |
5.563" | 5 | 8" | 4 | 500 psi @ 72° F | 15 in. of Hg @ 72° F | Steel | Buna-N Rubber | 0000000 | 000000 |
6 5/8" | 6 | 6" | 6 | 500 psi @ 72° F | 15 in. of Hg @ 72° F | Steel | Buna-N Rubber | 0000000 | 000000 |
8 5/8" | 8 | 6" | 6 | 500 psi @ 72° F | 15 in. of Hg @ 72° F | Steel | Buna-N Rubber | 0000000 | 000000 |
Flanged Gradual On/Off Valves

Nonrising Stem, and
Four Bolt Holes

Nonrising Stem, and
Eight Bolt Holes

Rising Stem, and
Four Bolt Holes

Rising Stem, and
Eight Bolt Holes
Bolt these valves to flanges. They gradually open and close to prevent system damage from suddenly starting and stopping flow.
Epoxy-coated cast iron valves are more corrosion resistant than plain cast iron or steel valves.
Wheel handles open and close with multiple turns, providing more controlled, shock-resistant flow than pull handles.
Nonrising stems stay in the same position whether the valve is open or closed. Valves with nonrising stems are often used underground and in other low-clearance locations.
Rising stems lift as the valve opens and lower as the valve closes to provide a visual indication of whether flow is on or off. The stem is isolated from the process media for a longer service life than valves with a nonrising stem.
- Valve Type: Gate
- For Use With: Water, Air
- Specifications Met: ASME B16.10, ASTM A126 Class B, AWWA C509, MSS-SP-70
O'all | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Bolt Hole Dia. | Flange OD | Bolt Circle Dia. | No. of Bolt Holes | Pressure Class | Max. Pressure | Temp. Range, °F | End-to-End Lg. | Ht. | Lg. | Each | |
3 | 3/4" | 7 1/2" | 6" | 4 | 125 | 200 psi @ 140° F | 35° to 140° | 8" | 14" | 8" | 00000000 | 0000000 |
4 | 3/4" | 9" | 7 1/2" | 8 | 125 | 200 psi @ 140° F | 35° to 140° | 9" | 17" | 9" | 00000000 | 000000 |
6 | 7/8" | 11" | 9 1/2" | 8 | 125 | 200 psi @ 140° F | 35° to 140° | 10 1/2" | 22 5/16" | 10 1/2" | 00000000 | 00000000 |
- Valve Type: Gate
- For Use With: Water, Air
- Specifications Met: ASME B16.10, ASTM A126 Class B, AWWA C509, FM Approved, MSS-SP-70, UL Listed
O'all | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Bolt Hole Dia. | Flange OD | Bolt Circle Dia. | No. of Bolt Holes | Pressure Class | Max. Pressure | Temp. Range, °F | End-to-End Lg. | Ht. | Lg. | Each | |
2 1/2 | 3/4" | 7" | 5 1/2" | 4 | 125 | 200 psi @ 140° F | 35° to 140° | 7 1/2" | 17 3/8" | 7 1/2" | 00000000 | 0000000 |
3 | 3/4" | 7 1/2" | 6" | 4 | 125 | 200 psi @ 140° F | 35° to 140° | 8" | 19 3/8" | 8" | 00000000 | 00000000 |
4 | 3/4" | 9" | 7 1/2" | 8 | 125 | 200 psi @ 140° F | 35° to 140° | 9" | 22 3/4" | 9" | 00000000 | 00000000 |
6 | 7/8" | 11" | 9 1/2" | 8 | 125 | 200 psi @ 140° F | 35° to 140° | 10 1/2" | 29 1/4" | 10 1/2" | 00000000 | 00000000 |
8 | 7/8" | 13 1/2" | 11 3/4" | 8 | 125 | 200 psi @ 140° F | 35° to 140° | 11 1/2" | 36" | 11 1/2" | 00000000 | 00000000 |
Fire Hydrants
Fight fires in areas around your facility that city-installed hydrants don’t reach. These hydrants are dry-barrel, the most common type of hydrant, which means they drain water when not in use. Not only does this prevent freezing, but it keeps water from spurting out if a vehicle hits these hydrants. And if they get hit, they won’t need much repair—their safety flange and safety stem coupling break without shattering. That means the hydrant comes off cleanly, minimizing damage to the main body and stem. To repair, just replace the flange and coupling using the repair kit (sold separately).
These hydrants must be installed and maintained according to National Fire Protection Association (NFPA) Standards. If your main line is below 5 ft., attach a stem extension (sold separately). An extension can also raise your hydrant above the ground.
These hydrants are FM approved and meet AWWA C-502 standards for the durability, reliability, and safety of dry-barrel fire hydrants. Connect them to the plain end of a water main line with their mechanical joint connection. The fitting will maintain a tight seal through normal underground movement and temperature changes.
For technical drawings and 3-D models, click on a part number.


Inlet Pipe Size | Fire Hose Trade Size (No. of Outlets) | Bury Dp., ft. | Ht. Above Ground | Drive Size | Drive Style | Valve Opening Direction | Body Material | Color | Fire Hydrant Valve Size | Operating Pressure, psi | Max. Temp., °F | Specifications Met | Each | |
Mechanical Joint Pipe Inlet × NH/NST Female Hose Outlet | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
6 | 2 1/2 (2) 4 1/2 (1) | 5 | 32" | 1 1/2" | External Pentagon | Counterclockwise | Epoxy-Coated Ductile Iron | Red | 5 1/4" | 200 | 130° | AWWA C502, FM Approved | 0000000 | 000000000 |

Includes | Each | |
Safety Stem Coupling, Safety Flange, Gasket, Mounting Hardware | 0000000 | 0000000 |