Oil & Gas
Pipeline and terminal isolation on large butterfly and gate valves.
High Torque · Heavy Duty · Large Bore
High-torque heavy-duty worm gear operators drive large-diameter butterfly, ball, and gate valves where standard units run out of capacity. Reinforced housings, hardened worms, and two-stage gearing deliver high output torque with self-locking position holding. Matson single-stage models reach 4,400 N·m; the two-stage M00 series (M16B–M90/D28) extends catalog output torque up to 100,000 N·m.
Application Foundation
A high-torque heavy-duty worm gear operator is built for large-diameter and high-pressure valves where break-to-open torque exceeds the range of compact catalog units. Heavier housings, larger worm sets, and two-stage gear trains supply the output torque to seat large butterfly discs, trunnion balls, and gate wedges, while the self-locking worm holds the valve against line pressure.
Matson single-stage models cover catalog output torque up to 4,400 N·m (M16). For larger duties the M00 two-stage series — model designations M16B through M90/D28 — extends catalog output torque from 4,400 N·m up to 100,000 N·m. Per-model two-stage rows are confirmed from the catalog datasheet rather than estimated, so request a datasheet for the exact figures matched to your valve.
Engineering Data
| Series | Stage | Drive | Catalog Output Torque Range (N·m) | Representative Models |
|---|---|---|---|---|
| M00 single-stage | One | Manual quarter-turn | 200 – 4,400 | M07 – M16 |
| M00 two-stage (heavy duty) | Two | Manual quarter-turn | 4,400 – 100,000 | M16B – M90/D28 |
| M00 single-stage (electric-ready) | One | For electric actuators | 1,000 – 160,000 | M12-Z10 – M80-Z500 |
| M00 two-stage (electric-ready) | Two | For electric actuators | 8,000 – 100,000 | M56/SS-Z15 – M90/D28-Z30 |
Ranges and series designations are from the Hebei Matson Metal Tech worm gearbox catalog. Single-stage M07–M16 per-model figures are published (200–4,400 N·m); two-stage and electric-ready per-model rows are confirmed per order — request the full model table. No individual two-stage torque rows are implied beyond the published ranges.
| Model | Output Torque (N·m) | Ratio | Input Torque (N·m) | Max Bore (mm) | ISO 5211 Flange | Weight (kg) |
|---|---|---|---|---|---|---|
| M07 | 200 | 40:1 | 19 | 35 | F05, F07, F10 | 3.1 |
| M10 | 500 | 42:1 | 45 | 35 | F07, F10 | 6.2 |
| M12 | 1000 | 42:1 | 90 | 40 | F10, F12, F14 | 11 |
| M14 | 1800 | 60:1 | 100 | 45 | F12, F14, F16 | 14 |
| M14A | 2500 | 70:1 | 130 | 60 | F14, F16 | ~22 |
| M15 | 3400 | 60:1 | 165 | 80 | F14, F16 | 32 |
| M16 | 4400 | 88:1 | 169 | 85 | F16, F25 | 44 |
Source: Hebei Matson Metal Tech worm gearbox catalog (M00 single-stage, manual quarter-turn). Values are catalog nominal figures; exact dimensions and drive-bushing details are confirmed per order — request a datasheet.
Operation
Heavy-duty worm gear operators add a second gear stage ahead of the worm set, or use a larger worm and wheel, to reach the high reduction ratios that large valves demand. The result is high output torque from a manageable handwheel effort, with the self-locking worm holding the valve at any position. Two-stage Matson units (M16B–M90/D28) cover catalog output torque up to 100,000 N·m for the largest manual valves.
Reinforced ductile-iron housings, hardened worm shafts, and heavy-duty bearings carry the elevated loads of large-bore service. For pits, galleries, and tall installations, a bevel-gear remote drive relocates the handwheel, and an actuator-ready base lets a powered actuator replace manual operation while keeping a declutchable override.
Engineering
By Industry
Pipeline and terminal isolation on large butterfly and gate valves.
Penstock, bypass, and intake gate valves at large diameter.
Large cooling-water and circulating-water isolation valves.
Heavy slurry and process-water valves in abrasive duty.
Common Questions
A high-torque worm gear operator supplies output torque beyond compact catalog units, typically through two-stage gearing or larger worm sets. In the Matson range, single-stage models reach 4,400 N·m and the two-stage series (M16B–M90/D28) extends catalog output torque up to 100,000 N·m for large-diameter and high-pressure valves.
A valve gearbox uses worm-and-wheel gearing to multiply handwheel torque and hold valve position. The worm on the input shaft drives a wheel keyed to the stem; high reduction ratios let an operator seat large valves by hand. The self-locking worm keeps the valve from creeping under line pressure, and heavy-duty units add a second stage for the largest valves.
Yes. Worm gears are well suited to high torque because the worm-and-wheel mesh gives large reduction in a compact package and is self-locking. Heavy-duty two-stage Matson operators reach catalog output torque up to 100,000 N·m. Housings, worm shafts, and bearings are upsized for large-bore service, and exact ratings are confirmed per valve.
Matson single-stage operators cover 200–4,400 N·m (M07–M16). Two-stage heavy-duty units extend 4,400–100,000 N·m (M16B–M90/D28), and electric-ready versions reach up to 160,000 N·m. Per-model two-stage figures are confirmed from the catalog datasheet — request the full table with your valve torque requirement.
Yes. We manufacture custom gear ratios, stem couplings, center heights, and bevel or actuator-ready interfaces under OEM and engineering orders for heavy-duty valves. Provide target output torque, stem dimensions, envelope limits, and environment class, and our engineers confirm a model or custom design against your valve datasheet.
Send your large-valve break-to-open torque, stem data, and pressure class. We match a Matson single-stage (to 4,400 N·m) or two-stage heavy-duty unit (to 100,000 N·m) and return exact per-model figures from the catalog datasheet.