About Gradual On/Off Valves
More
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

Rising Stem, and
Eight Bolt Holes
Easier to install and remove than threaded or weld-on valves, these valves bolt to flanges. They’re often used in lines requiring frequent cleaning and maintenance, such as those for slurries. They open and close gradually, preventing system damage from sudden starts and stops in flow. Also known as gate valves.
Valves with a wheel handle open and close with multiple turns, providing more controlled, shock-resistant flow than valves with a pull handle. Valves with a pull handle, also known as slide valves, open and close faster than valves with a wheel handle. They’re often used as blast gates for precise flow control in low-pressure air conditioning and ventilation systems.
Valves with a nonrising stem keep the handle in the same position whether they’re open or closed. They're often used in low-clearance locations. Valves with a rising stem lift the handle as they open and lower it as they close. At a glance, you can see if flow is on or off. The stem is isolated from what’s flowing through your line, giving these valves a longer lifespan than valves with a nonrising stem. This makes them good for critical lines and lines that need to be opened and closed frequently.
Cast iron valves are stronger than steel valves but more brittle than steel, ductile iron, and stainless steel valves. Steel valves resist impact better than cast iron valves. Ductile iron valves are stronger and more durable than cast iron valves, handling greater pressure changes without cracking. 316 stainless steel valves have the best corrosion resistance.
Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.
- Valve Type: Gate
- For Use With: Water, Oil, Steam
- Specifications Met: ASME B16.10, MSS-SP-70
O'all | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Pressure Class | Flange OD | Bolt Circle Dia. | No. of Bolt Holes | Bolt Hole Dia. | Bolts Included | Flow Coefficient (Cv) | Max. Pressure | Max. Steam Pressure | Temp. Range, °F | End-to-End Lg. | Ht. | Lg. | Each | |
Flanged Stem Housing | |||||||||||||||
2 | 125 | 6" | 4 3/4" | 4 | 3/4" | No | 215 | 200 psi @ 150° F | 125 psi @ 350° F | -20° to 450° | 7" | 14" | 7" | 00000000 | 0000000 |
2 1/2 | 125 | 7" | 5 1/2" | 4 | 3/4" | No | 335 | 200 psi @ 150° F | 125 psi @ 350° F | -20° to 450° | 7 1/2" | 16" | 7 1/2" | 00000000 | 000000 |
3 | 125 | 7 1/2" | 6" | 4 | 3/4" | No | 510 | 200 psi @ 150° F | 125 psi @ 350° F | -20° to 450° | 8" | 17 1/4" | 8" | 00000000 | 000000 |
4 | 125 | 9" | 7 1/2" | 8 | 3/4" | No | 945 | 200 psi @ 150° F | 125 psi @ 350° F | -20° to 450° | 9" | 20 1/4" | 9" | 00000000 | 000000 |
6 | 125 | 11" | 9 1/2" | 8 | 7/8" | No | 2,250 | 200 psi @ 150° F | 125 psi @ 350° F | -20° to 450° | 10 1/2" | 26 1/2" | 10 1/2" | 00000000 | 00000000 |
- Valve Type: Gate
- For Use With: Water, Oil, Air, Steam
- Specifications Met: ASME B16.10, MSS-SP-70
O'all | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Pressure Class | Flange OD | Bolt Circle Dia. | No. of Bolt Holes | Bolt Hole Dia. | Bolts Included | Flow Coefficient (Cv) | Max. Pressure | Max. Steam Pressure | Temp. Range, °F | End-to-End Lg. | Ht. | Lg. | Each | |
Flanged Stem Housing | |||||||||||||||
8 | 125 | 13 1/2" | 11 3/4" | 8 | 3/4" | No | Not Rated | 200 psi @ 100° F | 125 psi @ 350° F | -20° to 100° | 11 1/2" | 28 1/2" | 13 3/4" | 000000000 | 000000000 |
- Valve Type: Gate
- For Use With: Water, Oil, Air, Steam
O'all | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Pressure Class | Flange OD | Bolt Circle Dia. | No. of Bolt Holes | Bolt Hole Dia. | Bolts Included | Flow Coefficient (Cv) | Max. Pressure | Max. Steam Pressure | Temp. Range, °F | End-to-End Lg. | Ht. | Lg. | Each | |
Flanged Stem Housing | |||||||||||||||
2 | 125 | 6" | 4 3/4" | 4 | 3/4" | No | 215 | 200 psi @ 150° F | 125 psi @ 350° F | -20° to 450° | 7" | 19 5/16" | 7" | 0000000 | 0000000 |
2 1/2 | 125 | 7" | 5 1/2" | 4 | 3/4" | No | 335 | 200 psi @ 150° F | 125 psi @ 350° F | -20° to 450° | 7 1/2" | 20 11/16" | 7 1/2" | 0000000 | 000000 |
3 | 125 | 7 1/2" | 6" | 4 | 3/4" | No | 510 | 200 psi @ 150° F | 125 psi @ 350° F | -20° to 450° | 8" | 23 1/4" | 8" | 0000000 | 000000 |
4 | 125 | 9" | 7 1/2" | 8 | 3/4" | No | 945 | 200 psi @ 150° F | 125 psi @ 350° F | -20° to 450° | 9" | 28 1/2" | 9" | 0000000 | 000000 |
6 | 125 | 11" | 9 1/2" | 8 | 7/8" | No | 2,250 | 200 psi @ 150° F | 125 psi @ 350° F | -20° to 450° | 10 1/2" | 32 1/8" | 10" | 0000000 | 00000000 |
- Valve Type: Gate
- For Use With: Water, Oil, Air, Steam
- Specifications Met: ASME B16.10, MSS-SP-70
O'all | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Pressure Class | Flange OD | Bolt Circle Dia. | No. of Bolt Holes | Bolt Hole Dia. | Bolts Included | Flow Coefficient (Cv) | Max. Pressure | Max. Steam Pressure | Temp. Range, °F | End-to-End Lg. | Ht. | Lg. | Each | |
Flanged Stem Housing | |||||||||||||||
8 | 125 | 13 1/2" | 11 3/4" | 8 | 3/4" | No | Not Rated | 200 psi @ 100° F | 125 psi @ 350° F | -20° to 100° | 11 1/2" | 35 7/8" | 13 3/4" | 00000000 | 000000000 |
- Valve Type: Gate
- For Use With: See table
- Specifications Met: See table
O'all | |||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Pressure Class | Flange OD | Bolt Circle Dia. | No. of Bolt Holes | Bolt Hole Dia. | Bolts Included | Flow Coefficient (Cv) | Max. Pressure | Max. Steam Pressure | Temp. Range, °F | End-to-End Lg. | Ht. | Lg. | For Use With | Specifications Met | Each | |
Flanged Stem Housing | |||||||||||||||||
2 | 150 | 6" | 4 3/4" | 4 | 3/4" | No | Not Rated | 285 psi @ 100° F | 150 psi @ 350° F | -20° to 800° | 7" | 19 3/8" | 7" | Water, Oil, Air, Steam | American Petroleum Institute Standard 600, ASTM A216 WCB | 00000000 | 0000000 |
2 1/2 | 150 | 7" | 5 1/2" | 4 | 3/4" | No | Not Rated | 285 psi @ 100° F | 150 psi @ 350° F | -20° to 800° | 7 1/2" | 19 7/8" | 7 1/2" | Water, Oil, Air, Steam | American Petroleum Institute Standard 600, ASTM A216 WCB | 00000000 | 000000 |
3 | 150 | 7 1/2" | 6" | 4 | 3/4" | No | Not Rated | 285 psi @ 100° F | 150 psi @ 350° F | -20° to 800° | 8" | 24" | 8" | Water, Oil, Air, Steam | American Petroleum Institute Standard 600, ASTM A216 WCB | 00000000 | 000000 |
3 | 300 | 8 1/4" | 6 5/8" | 8 | 7/8" | No | 424 | 740 psi @ 100° F | 635 psi @ 350° F | -20° to 800° | 11 1/8" | 21 1/4" | 9 5/8" | Water, Air, Steam | American Petroleum Institute Standard 600, ASME B16.34 | 000000000 | 000000 |
4 | 150 | 9" | 7 1/2" | 8 | 3/4" | No | Not Rated | 285 psi @ 100° F | 150 psi @ 350° F | -20° to 800° | 9" | 27 1/2" | 9" | Water, Oil, Air, Steam | American Petroleum Institute Standard 600, ASTM A216 WCB | 00000000 | 00000000 |
4 | 300 | 10" | 7 7/8" | 8 | 7/8" | No | 1,079 | 740 psi @ 100° F | 635 psi @ 350° F | -20° to 800° | 12" | 25 5/8" | 9 5/8" | Water, Air, Steam | American Petroleum Institute Standard 600, ASME B16.34 | 000000000 | 00000000 |
6 | 150 | 11" | 9 1/2" | 8 | 3/4" | No | 3,390 | 285 psi @ 100° F | 200 psi @ 350° F | -20° to 800° | 10 1/2" | 28 7/8" | 11 13/16" | Water, Air, Steam | American Petroleum Institute Standard 600, ASME B16.34 | 000000000 | 00000000 |
8 | 150 | 13 1/2" | 11 3/4" | 8 | 3/4" | No | 6,759 | 285 psi @ 100° F | 200 psi @ 350° F | -20° to 800° | 11 1/2" | 35 5/8" | 13 13/16" | Water, Air, Steam | American Petroleum Institute Standard 600, ASME B16.34 | 000000000 | 00000000 |
- Valve Type: Gate
- For Use With: Water, Oil, Steam
- Specifications Met: MSS-SP-128
O'all | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Pressure Class | Flange OD | Bolt Circle Dia. | No. of Bolt Holes | Bolt Hole Dia. | Bolts Included | Flow Coefficient (Cv) | Max. Pressure | Max. Steam Pressure | Temp. Range, °F | End-to-End Lg. | Ht. | Lg. | Each | |
Flanged Stem Housing | |||||||||||||||
3 | 150 | 7 1/2" | 6" | 4 | 3/4" | No | 510 | 285 psi @ 100° F | 150 psi @ 350° F | -20° to 450° | 8" | 17 1/4" | 8" | 0000000 | 000000000 |
4 | 150 | 9" | 7 1/2" | 8 | 3/4" | No | 945 | 285 psi @ 100° F | 150 psi @ 350° F | -20° to 450° | 9" | 20 1/4" | 10" | 0000000 | 00000000 |
- Valve Type: Gate
- For Use With: Water, Oil, Steam
- Specifications Met: MSS-SP-128
O'all | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Pressure Class | Flange OD | Bolt Circle Dia. | No. of Bolt Holes | Bolt Hole Dia. | Bolts Included | Flow Coefficient (Cv) | Max. Pressure | Max. Steam Pressure | Temp. Range, °F | End-to-End Lg. | Ht. | Lg. | Each | |
Flanged Stem Housing | |||||||||||||||
6 | 150 | 11" | 9 1/2" | 8 | 3/4" | No | 2,250 | 285 psi @ 100° F | 150 psi @ 350° F | -20° to 450° | 10 1/2" | 26 1/2" | 12" | 0000000 | 000000000 |
- Valve Type: Gate
- For Use With: Water, Oil, Air, Steam
- Specifications Met: American Petroleum Institute Standard 603, ASME B16.34
O'all | ||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Pressure Class | Flange OD | Bolt Circle Dia. | No. of Bolt Holes | Bolt Hole Dia. | Bolts Included | Flow Coefficient (Cv) | Max. Pressure | Max. Steam Pressure | Temp. Range, °F | Packing Material | End-to-End Lg. | Ht. | Lg. | Each | |
Flanged Stem Housing | ||||||||||||||||
1 | 150 | 4 1/4" | 3 1/8" | 4 | 1/2" | No | 80 | 275 psi @ 100° F | 150 psi @ 350° F | 0° to 375° | PTFE Plastic | 5" | 11 5/16" | 4 3/4" | 00000000 | 0000000 |
1 1/2 | 150 | 5" | 3 7/8" | 4 | 1/2" | No | 300 | 275 psi @ 100° F | 150 psi @ 350° F | 0° to 375° | PTFE Plastic | 6 1/2" | 14 5/16" | 7 7/8" | 00000000 | 000000 |
2 | 150 | 6" | 4 3/4" | 4 | 3/4" | No | 360 | 275 psi @ 100° F | 150 psi @ 350° F | 0° to 375° | PTFE Plastic | 7" | 16" | 7 7/8" | 00000000 | 00000000 |
3 | 150 | 7 1/2" | 6" | 4 | 3/4" | No | 1,150 | 275 psi @ 100° F | 150 psi @ 350° F | 0° to 375° | PTFE Plastic | 8" | 22 1/4" | 9 13/16" | 00000000 | 00000000 |
4 | 150 | 9" | 7 1/2" | 8 | 3/4" | No | 2,150 | 275 psi @ 100° F | 150 psi @ 350° F | 0° to 375° | PTFE Plastic | 9" | 25 15/16" | 9 13/16" | 00000000 | 00000000 |
6 | 150 | 11" | 9 1/2" | 8 | 7/8" | No | 4,150 | 275 psi @ 100° F | 195 psi @ 350° F | -20° to 800° | Graphite | 10 1/2" | 34 3/4" | 11 13/16" | 000000000 | 00000000 |
8 | 150 | 13 1/2" | 11 3/4" | 8 | 7/8" | No | 5,250 | 275 psi @ 100° F | 195 psi @ 350° F | -20° to 800° | Graphite | 11 1/2" | 42 5/8" | 13 13/16" | 000000000 | 00000000 |
- Valve Type: Gate
- For Use With: Oil, Air
O'all | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Pressure Class | Flange OD | Bolt Circle Dia. | No. of Bolt Holes | Bolt Hole Dia. | Bolts Included | Flow Coefficient (Cv) | Max. Pressure | Temp. Range, °F | End-to-End Lg. | Ht. | Lg. | Each | |
Flanged Stem Housing | ||||||||||||||
4 | 125 | 9" | 7 1/2" | 8 | 3/4" | No | 685 | 10 psi @ 1000° F | -40° to 1000° | 5 1/4" | 15 5/8" | 6" | 0000000 | 0000000 |
6 | 125 | 11" | 9 1/2" | 8 | 7/8" | No | 2,150 | 5 psi @ 1000° F | -40° to 1000° | 5 3/4" | 20" | 8" | 0000000 | 00000000 |
FM-Approved Flanged Gradual On/Off Valves
FM-approved, these valves are often used to isolate sections of your facility’s water supply for fire suppression and protection. They bolt to flanges for easier installation and removal than threaded or weld-on valves. This makes them a great choice if you have to clean and maintain your line frequently. Also known as gate valves, they open and close gradually to prevent sudden starts and stops of flow that could damage your system. Epoxy coated, these valves resist corrosion. They’re bright red, so they’re easy to identify as fire valves.
Their rubber-coated gate, also known as a resilient wedge, compresses against the valve for a long-lasting, leakproof seal. It seals tightly even if you install these valves vertically, or if there’s low back pressure. For easy disassembly during maintenance, they have a flanged stem housing that bolts in place. However, the housing makes these valves heavier and larger than valves with a threaded or welded stem housing.
Valves with a wheel handle open and close with multiple turns for controlled, shock-resistant flow. Wrench-operated valves are the best choice for hard-to-reach locations, such as underground or inside a manhole. Operate them from a distance with a valve wrench. You can also open and close them with a fire indicator post.
Valves with a nonrising stem keep the handle in the same position whether they’re open or closed. They're often used underground and in low-clearance locations. Valves with a rising stem lift the handle as they open and lower it as they close. At a glance, you can see if flow is on or off. The stem is isolated from what’s flowing through your line, giving these valves a longer lifespan than valves with a nonrising stem. This makes them good for critical lines and lines that need to be opened and closed frequently.
Ductile iron valves are stronger and more durable than cast iron valves. They’ll handle greater pressure changes without cracking.
Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.

- Valve Type: Gate
- For Use With: Air, Water
- Specifications Met: ASME B16.10, ASTM A126 Class B, AWWA C509, FM Approved, MSS-SP-70, UL Listed
O'all | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Pressure Class | Flange OD | Bolt Circle Dia. | No. of Bolt Holes | Bolt Hole Dia. | Bolts Included | Max. Pressure | Temp. Range, °F | End-to-End Lg. | Ht. | Lg. | Each | |
Flanged Stem Housing | |||||||||||||
2 1/2 | 125 | 7" | 5 1/2" | 4 | 3/4" | No | 200 psi @ 140° F | 35° to 140° | 7 1/2" | 17 3/8" | 7 1/2" | 00000000 | 0000000 |
3 | 125 | 7 1/2" | 6" | 4 | 3/4" | No | 200 psi @ 140° F | 35° to 140° | 8" | 19 3/8" | 8" | 00000000 | 00000000 |
4 | 125 | 9" | 7 1/2" | 8 | 3/4" | No | 200 psi @ 140° F | 35° to 140° | 9" | 22 3/4" | 9" | 00000000 | 00000000 |
6 | 125 | 11" | 9 1/2" | 8 | 7/8" | No | 200 psi @ 140° F | 35° to 140° | 10 1/2" | 29 1/4" | 10 1/2" | 00000000 | 00000000 |
8 | 125 | 13 1/2" | 11 3/4" | 8 | 7/8" | No | 200 psi @ 140° F | 35° to 140° | 11 1/2" | 36" | 11 1/2" | 00000000 | 00000000 |

- Valve Type: Gate
- For Use With: Air, Water
- Specifications Met: AWWA C515, FM Approved, UL Listed
O'all | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Flange OD | Bolt Circle Dia. | No. of Bolt Holes | Bolt Hole Dia. | Bolts Included | Flow Coefficient (Cv) | Max. Pressure | Temp. Range, °F | End-to-End Lg. | Ht. | Lg. | Each | |
Flanged Stem Housing | |||||||||||||
3 | 7 1/2" | 6" | 4 | 3/4" | No | 108 | 300 psi @ 100° F | 35° to 170° | 8" | 23" | 7 7/8" | 0000000 | 0000000 |
4 | 9" | 7 1/2" | 4 | 3/4" | No | 188 | 300 psi @ 100° F | 35° to 170° | 9" | 27 1/16" | 10" | 0000000 | 000000 |
6 | 11" | 9 1/2" | 8 | 7/8" | No | 423 | 300 psi @ 100° F | 35° to 170° | 10 1/2" | 35 1/4" | 12" | 0000000 | 000000 |
8 | 13 1/2" | 11 3/4" | 8 | 7/8" | No | 757 | 300 psi @ 100° F | 35° to 170° | 11 1/2" | 45 3/16" | 15 3/4" | 0000000 | 00000000 |

- Valve Type: Gate
- For Use With: Drinking Water, Water
- Specifications Met: FM Approved, NSF/ANSI 61, UL Listed
O'all | |||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Pressure Class | Flange OD | Bolt Circle Dia. | No. of Bolt Holes | Bolt Hole Dia. | Bolts Included | Flow Coefficient (Cv) | Max. Pressure | Temp. Range, °F | End-to-End Lg. | Ht. | Lg. | Drive Style | Drive Size | Features | Each | |
Flanged Stem Housing | |||||||||||||||||
4 | 125 | 9" | 7 1/2" | 8 | 3/4" | No | 945 | 300 psi @ 100° F | 35° to 140° | 9" | 18" | 9" | External Square | 2" | Indicator Post Mounting Flange | 0000000 | 000000000 |
6 | 125 | 11" | 9 1/2" | 8 | 7/8" | No | 2,250 | 300 psi @ 100° F | 35° to 140° | 10 1/2" | 22 1/2" | 10 1/2" | External Square | 2" | Indicator Post Mounting Flange | 0000000 | 00000000 |
8 | 125 | 13 1/2" | 11 3/4" | 8 | 7/8" | No | 4,150 | 300 psi @ 100° F | 35° to 140° | 11 1/2" | 27 1/2" | 11 1/2" | External Square | 2" | Indicator Post Mounting Flange | 0000000 | 00000000 |
Flanged Gradual On/Off Valves for Thick Liquids and Dry Materials

- Valve Type: Gate
- For Use With: Air, Argon, Deionized Water, Ethanol, Ethylene Glycol, Helium, Isopropyl Alcohol, Krypton, Methanol, Neon, Nitrogen, Salt Water, Soap Solutions, Water, Xenon
These valves have a sharp gate that slices through thick slurries, wastewater, dry bulk solids, and other materials that would clog other gradual on/off valves. They bolt to flanges and gradually open and close to prevent system damage from suddenly starting and stopping flow. The wheel handle opens and closes the valve with multiple turns, providing controlled, shock-resistant flow. The rising stem lifts as the valve opens and lowers 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 long service life.
For technical drawings and 3-D models, click on a part number.
O'all | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Flange OD | Bolt Hole Dia. | Bolt Circle Dia. | No. of Bolt Holes | Bolts Included | Max. Pressure | Temp. Range, °F | End-to-End Lg. | Ht. | Lg. | Stem Type | Each | |
Ductile Iron Body—316 Stainless Steel Gate | |||||||||||||
3 | 7 1/2" | 5/8" | 6" | 4 | No | 150 psi @ 248° F | -22° to 248° | 2 1/4" | 23" | 7 1/16" | Rising | 0000000 | 000000000 |
4 | 9" | 5/8" | 7 1/2" | 8 | No | 150 psi @ 248° F | -22° to 248° | 2 1/4" | 29 7/16" | 6 3/4" | Rising | 0000000 | 00000000 |
6 | 11" | 3/4" | 9 1/2" | 8 | No | 150 psi @ 248° F | -22° to 248° | 2 1/2" | 34 7/16" | 9 3/8" | Rising | 0000000 | 00000000 |
Vapor-Sealing Flanged Gradual On/Off Valves

- Valve Type: Gate
- For Use With: Gasoline, Oil, Steam, Water
- Specifications Met: API 602, ASME B16.34, MSS-SP-117
Control the flow of steam, hazardous gases, and other vapors without risking leaks. These valves have an accordion-like bellows around the stem that expands as they open and contracts as they close, forming an airtight seal. If the bellows fail, a reinforced seal—also known as a backseat seal—minimizes the risk of leakage. Ideal for heating and steam service applications, they maintain their seal even as the temperature swings. Plus, the stem housing is welded to make sure nothing leaks out. Also known as gate valves, these valves open and close gradually with multiple turns of the wheel handle to prevent sudden starts and stops. They bolt onto flanges, so they’re easier to install and remove for cleaning and repairs than threaded or weld-on valves.
The handle raises as these valves open and lowers as they close. At a glance, you can see if flow is on or off. The stem is isolated from what’s flowing through your line, giving these valves a longer lifespan than valves with a nonrising stem.
For technical drawings and 3-D models, click on a part number.
O'all | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Pressure Class | Flange OD | Bolt Hole Dia. | Bolt Circle Dia. | No. of Bolt Holes | Max. Pressure | Max. Steam Pressure | Temp. Range, °F | End-to-End Lg. | Ht. | Lg. | Each | |
Wheel Handle and Rising Stem—Steel Body and 420 Stainless Steel Gate | |||||||||||||
Welded Stem Housing with 321 Stainless Steel Bellows | |||||||||||||
1/2 | 150 | 3 1/2" | 5/8" | 2 3/8" | 4 | 285 psi @ 100° F | 80 psi @ 800° F | -20° to 800° | 4 1/4" | 11 1/2" | 4 1/4" | 0000000 | 000000000 |
3/4 | 150 | 3 7/8" | 5/8" | 2 3/4" | 4 | 285 psi @ 100° F | 80 psi @ 800° F | -20° to 800° | 4 9/16" | 12 3/4" | 4 9/16" | 0000000 | 00000000 |
1 | 150 | 4 1/4" | 5/8" | 3 1/8" | 4 | 285 psi @ 100° F | 80 psi @ 800° F | -20° to 800° | 5" | 15 1/8" | 5" | 0000000 | 00000000 |
1 1/2 | 150 | 5" | 5/8" | 3 7/8" | 4 | 285 psi @ 100° F | 80 psi @ 800° F | -20° to 800° | 6 1/2" | 19 1/2" | 6 1/2" | 0000000 | 00000000 |
2 | 150 | 6" | 3/4" | 4 3/4" | 4 | 285 psi @ 100° F | 80 psi @ 800° F | -20° to 800° | 7" | 23 1/4" | 7" | 0000000 | 00000000 |
Tight-Seal Flanged Gradual On/Off Valves
A rubber-coated gate, also known as a resilient wedge, compresses against the valve seat to give these valves a tight, leakproof seal. They shut tight even when they’re installed vertically, have low back pressure, or the liquid contains solids and debris. Often called gate valves, they open and close gradually to prevent sudden starts and stops that can damage your system. Since they bolt onto flanges, they’re easier to install and remove than threaded and weld-on valves. This makes them a good choice for lines that need frequent cleaning and maintenance. You can use them in lines for water supply, reclamation, and wastewater treatment—they meet AWWA (American Water Works Association) specifications. To protect against corrosion, the body is coated with epoxy.
The stem is nonrising, so it stays in the same position whether the valve is open or closed. They’re often used in low-clearance spots. Their flanged stem housing bolts in place to make them easy to take apart for repairs. However, the flanged stem housing makes these valves heavier and larger than valves with threaded or welded stem housings.
Wrench-operated valves work well in hard-to-reach places, such as underground or the bottom of manholes, since you can turn the flow on or off from a distance. Open and close them with T-handle valve wrenches.
Ductile iron valves are stronger and more durable than cast iron valves, handling greater pressure changes without cracking.
Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.
For technical drawings and 3-D models, click on a part number.

- 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 | Pressure Class | Flange OD | Bolt Circle Dia. | No. of Bolt Holes | Bolt Hole Dia. | Bolts Included | Flow Coefficient (Cv) | Max. Pressure | Temp. Range, °F | End-to-End Lg. | Ht. | Lg. | Each | |
Flanged Stem Housing | ||||||||||||||
3 | 125 | 7 1/2" | 6" | 4 | 3/4" | No | Not Rated | 200 psi @ 140° F | 35° to 140° | 8" | 14" | 8" | 00000000 | 0000000 |
4 | 125 | 9" | 7 1/2" | 8 | 3/4" | No | Not Rated | 200 psi @ 140° F | 35° to 140° | 9" | 17" | 9" | 00000000 | 000000 |
6 | 125 | 11" | 9 1/2" | 8 | 7/8" | No | Not Rated | 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
- Specifications Met: AWWA C515
O'all | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Pressure Class | Flange OD | Bolt Circle Dia. | No. of Bolt Holes | Bolt Hole Dia. | Bolts Included | Flow Coefficient (Cv) | Max. Pressure | Temp. Range, °F | End-to-End Lg. | Ht. | Lg. | Each | |
Flanged Stem Housing | ||||||||||||||
3 | 125 | 7 1/2" | 6" | 4 | 3/4" | No | 109 | 250 psi @ 100° F | 0° to 175° | 8" | 16" | 8" | 0000000 | 0000000 |
4 | 125 | 9" | 7 1/2" | 8 | 3/4" | No | 190 | 250 psi @ 100° F | 0° to 175° | 9" | 18 3/8" | 9 7/8" | 0000000 | 000000 |
6 | 125 | 11" | 9 1/2" | 8 | 7/8" | No | 427 | 250 psi @ 100° F | 0° to 175° | 10 1/2" | 24 5/8" | 12 5/8" | 0000000 | 000000 |

- Valve Type: Gate
- For Use With: Water
- Specifications Met: AWWA C515
O'all | ||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Pressure Class | Flange OD | Bolt Circle Dia. | No. of Bolt Holes | Bolt Hole Dia. | Bolts Included | Flow Coefficient (Cv) | Max. Pressure | Temp. Range, °F | End-to-End Lg. | Ht. | Lg. | Drive Style | Drive Size | Each | |
Flanged Stem Housing | ||||||||||||||||
3 | 125 | 7 1/2" | 6" | 4 | 3/4" | No | 109 | 250 psi @ 100° F | 0° to 175° | 8" | 16" | 8" | External Square | 2" | 0000000 | 0000000 |
4 | 125 | 9" | 7 1/2" | 8 | 3/4" | No | 190 | 250 psi @ 100° F | 0° to 175° | 9" | 18 3/8" | 9" | External Square | 2" | 0000000 | 000000 |
6 | 125 | 11" | 9 1/2" | 8 | 7/8" | No | 427 | 250 psi @ 100° F | 0° to 175° | 10 1/2" | 24 5/8" | 10 1/2" | External Square | 2" | 0000000 | 000000 |
Plastic Flanged Gradual On/Off Valves for Drinking Water

- Valve Type: Gate
- For Use With: Drinking Water
- Seal Material: Buna-N Rubber
- Specifications Met: NSF/ANSI 61
Easier to install and remove for maintenance than threaded and weld-on valves, these valves bolt and unbolt to flanges. They meet NSF/ANSI 61 for safe use in drinking water systems. Also known as gate valves, they open and close gradually with multiple turns of the wheel handle to prevent damage from sudden starts and stops in flow. Whether these valves are open or closed, the handle stays at the same height because of the nonrising stem. This helps them fit in low-clearance areas, such as underground lines. All are plastic, making them a lightweight alternative to metal valves. When the seals wear out, replace them using repair kits (sold separately).
Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.
For technical drawings and 3-D models, click on a part number.
Valves | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
O'all | Repair Kits | |||||||||||||||||
Pipe Size | Pressure Class | Flange OD | Bolt Circle Dia. | No. of Bolt Holes | Bolt Hole Dia. | Bolts Included | Flow Coefficient (Cv) | Max. Pressure | Temp. Range, °F | End-to-End Lg. | Ht. | Lg. | Stem Type | Color | Each | Each | ||
PVC Plastic Body with Polypropylene Plastic Gate | ||||||||||||||||||
1/2 | 150 | 3 1/2" | 2 3/8" | 4 | 1/2" | No | 15 | 150 psi @ 70° F | 32° to 140° | 4 3/4" | 5 7/8" | 4 3/4" | Nonrising | Dark Gray | 00000000 | 0000000 | 00000000 | 000000 |
3/4 | 150 | 3 7/8" | 2 3/4" | 4 | 1/2" | No | 29 | 150 psi @ 70° F | 32° to 140° | 5" | 6 1/16" | 5" | Nonrising | Dark Gray | 00000000 | 000000 | 00000000 | 00000 |
1 | 150 | 4 1/4" | 3 1/8" | 4 | 1/2" | No | 39 | 150 psi @ 70° F | 32° to 140° | 5 3/8" | 6 7/16" | 5 3/8" | Nonrising | Dark Gray | 00000000 | 000000 | 00000000 | 00000 |
1 1/2 | 150 | 5" | 3 7/8" | 4 | 1/2" | No | 127 | 150 psi @ 70° F | 32° to 140° | 6 3/4" | 9 1/16" | 6 3/4" | Nonrising | Dark Gray | 00000000 | 000000 | 00000000 | 00000 |
2 | 150 | 6" | 4 3/4" | 4 | 5/8" | No | 279 | 150 psi @ 70° F | 32° to 140° | 7 1/4" | 9 7/8" | 7 1/4" | Nonrising | Dark Gray | 00000000 | 000000 | 00000000 | 00000 |