Water & Wastewater
Buried and pit-mounted valves reached from surface galleries.
Bevel Gear · Right-Angle · Remote Drive
Bevel gear operators transmit handwheel torque through a right-angle gear set, relocating the operating point for valves on vertical stems, in pits and galleries, or in confined machinery spaces. They drive both quarter-turn and multi-turn valves, pairing the bevel stage with a worm or spur reduction and the appropriate ISO mounting.
Application Foundation
A bevel gear operator uses a right-angle bevel gear set to change the axis of the operating drive, so the handwheel or actuator can sit away from the valve stem. This is essential for valves on vertical risers, buried or pit-mounted valves reached from a gallery, and valves in confined machinery spaces where a direct handwheel cannot be turned.
Bevel operators serve both quarter-turn valves, where the bevel stage feeds a worm or part-turn output, and multi-turn gate and globe valves, where it drives a rising stem through extension spindles. Mounting follows ISO 5211 or ISO 5210 to match the valve. Per-model torque and dimensional specifications are confirmed per order — request a datasheet for the matched configuration.
Engineering Data
| Operation Type | Valve Travel | Mounting Standard | Typical Valve Families |
|---|---|---|---|
| Quarter-turn | 90° rotation | ISO 5211 (F05–F25) | Butterfly, ball, plug |
| Multi-turn | Many revolutions, rising stem | ISO 5210 base | Gate, globe |
| Bevel (right-angle) | Per valve (90° or multi-turn) | ISO 5211 / 5210 + bevel drive | Remote / vertical-stem valves |
| Declutchable override | Manual on actuated valves | ISO 5211 / 5210 with clutch | Any actuator-fitted valve |
General selection guidance by valve travel and mounting interface; matched Matson single-stage models (M07–M16, 200–4,400 N·m on ISO 5211) and larger two-stage units are confirmed against your valve datasheet — request a datasheet.
| ISO 5211 Flange | Typical Valve Size Band* | Common Valve Families | Matson Models Offering This Flange |
|---|---|---|---|
| F05 | Small bore | Ball, plug, small butterfly | M07 |
| F07 | Small–medium bore | Butterfly (wafer), ball, plug | M07, M10 |
| F10 | Medium bore | Butterfly, ball, plug | M07, M10, M12 |
| F12 | Medium bore | Butterfly (lug), ball, gate top-work | M12, M14 |
| F14 | Medium–large bore | Butterfly, trunnion ball, gate | M12, M14, M14A, M15 |
| F16 | Large bore | Butterfly (double flange / AWWA), ball, gate | M14, M14A, M15, M16 |
| F25 | Heavy / large bore | Large AWWA butterfly, high-pressure ball, large gate | M16 |
*Valve size band is indicative only — actual flange depends on the valve manufacturer's top-work, stem, and torque rating. Flange and Matson single-stage model data are from the Matson worm gearbox catalog (M07–M16, 200–4,400 N·m). Two-stage and electric-actuator series extend up to 160,000 N·m. Confirm the exact flange against your valve datasheet.
Per-model specifications (dimensions, weights, drive-bushing details, material grades): available on request — request a datasheet. Send your valve tag, bore, pressure class, environment class, and required output torque and our engineers return a model recommendation with the matching ISO 5211 / ISO 5210 interface.
Operation
A bevel gear operator meshes two bevel gears at a right angle so input rotation about one axis produces output rotation about a perpendicular axis. Coupling this stage to an extension spindle relocates the handwheel to an accessible platform or wall, letting an operator turn a valve that is buried, overhead, or in a tight space without standing at the stem.
For quarter-turn valves, the bevel stage typically drives a self-locking worm output that holds the disc or ball at the set angle. For multi-turn gate and globe valves, the bevel drive turns a rising stem through the extension. Spindle length, support guides, and the ISO 5211 or 5210 interface are matched to the installation geometry and confirmed against the valve drawing.
Engineering
By Industry
Buried and pit-mounted valves reached from surface galleries.
Overhead and rack-mounted pipeline valves needing remote drive.
Vertical-stem and confined-space valves in plant galleries.
Deck-to-below valve operation through bulkheads.
Common Questions
A bevel gear operator uses a right-angle bevel gear set to change the axis of the operating drive, so the handwheel or actuator can be located away from the valve stem. It drives quarter-turn and multi-turn valves on vertical risers, in pits and galleries, and in confined spaces where a direct handwheel cannot be turned.
A valve gearbox multiplies handwheel torque through gearing and holds the valve position. A bevel gear operator adds a right-angle stage that redirects the drive axis, then feeds a worm or spur output. The output worm is self-locking, so the valve holds at any position. Mounting follows ISO 5211 for quarter-turn or ISO 5210 for multi-turn valves.
A bevel gear operator is used when the operating point must be relocated — for buried, overhead, vertical-stem, or confined-space valves — because the right-angle stage redirects the drive. It is often combined with a worm output for self-locking. A plain worm operator is used where the handwheel can sit directly at the stem.
Yes. Bevel gear operators drive multi-turn gate and globe valves by turning a rising stem through extension spindles, as well as quarter-turn valves through a part-turn output. The mounting follows ISO 5210 for multi-turn or ISO 5211 for quarter-turn, and the spindle length and guides are matched to the installation.
Yes. Bevel gear operators are commonly supplied with extension spindles, support guides, and headstocks to relocate the handwheel to an accessible platform or wall. Spindle length and the mounting interface are matched to the installation geometry and the valve drawing — request a datasheet with your layout for the matched configuration.
Send your valve type, installation geometry, and operating point. We configure a right-angle bevel gear operator with extension spindles and the correct ISO interface, with per-model specifications on request.