Valve Gear Box

From $110.00

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Fusion Bonded Epoxy coated Cast Iron manual gear box for manual valve actuation. Standard with visual indicator and adjustable stops. 316 Stainless Steel shaft with shaft seal and gasket oring ensuring a weatherproof protection of IP67.

Model Reduction Torque (Nm) Mounting Drive (mm) Hand wheel (mm)
GB1 40:1 255 F05/F07 14 200
GB2 36:1 570 F07/F10 22 300
GB3 36:1 930 F10/F12 27 350
GB4 50:1 1400 F14 36 400
GB5 70:1 2600 F16 36 500
GB6 140:1 5200 F16 46 500
GB7 207:1 8000 F25 46 500

Valve Gear Box

Model A B C D E F ǾG H I J K ǾP □N ǾQ M Handle Shaft (Ømm)
GB1 86 95 127 42.5 71 122.2 200 66.5 35 173.5 14 50 M6 70 M8 12
GB2 120 135 168.5 60.5 94 145 200 78.3 41 235 22 70 M8 102 M10 16
GB3 140.5 154 188 60.5 98.5 195.8 300 80.3 41 302 27 102 M10 125 M12 19
GB4 160 190 227.5 78.5 120 250.5 350 110.7 49 361 36     140 M16 19
GB5 217 248 273 122.5 160 220.5 400 119.1 55 434 36     165 M20 22
GB6 212 248 273 122.5 160 196 400 119.2 55 460 46     165 M20 19
GB7 329.6 340 380 90.8 210 127.2 500 133 71.8 628.8 46     254 M16 22

All dimensions in mm unless shown otherwise. 

Valve Gear Box Construction

Number Part Material
1 Body Grey Cast Iron
2 Gasket Sealed paper
3 O-ring NBR
4 Worm Gear Ductile Iron
5 Box Cap Grey Cast Iron
6 Indicator Cast Iron
7 Pin Spring Steel
8 Grease Nozzle Stainless Steel
9 Cap Engineered Plastic
10 Worm Carbon Steel
11 Needle Bearing Bearing Steel
12 Worm Shaft Stainless Steel
13 Handwheel Cast Iron
14 Limiting Screw Steel
15 Limiting Nut Steel

Torque 255 to 8000 Nm
Body FBE coated Cast Iron
Reduction 36:1 to 207:1
IP Rating IP67
Fixings 316 Stainless Steel
Shaft 316 Stainless Steel

  • What is a Valve Gear Box?

    A valve gear box gives a rotational torque driven from a manual input (handwheel) to turn a valve. In this case we are talking about ¼ turn valves (90 degree turn) such as ball or butterfly valves. The valve can be stopped anywhere in its rotation simply by stop turning the hand wheel. It comes with a visual indicator to see where the valve sits between its fully open and fully closed position.

  • How does a Valve Gear Box work?

    The valve gear box works by a hand wheel input force turning a shaft which interfaces with a set of gears contained within a sealed case. These gears amplify the torque output and transmit this through a female drive in the bottom of the gear box case. This interfaces with the male drive on the valve turning the valve as the gear box moves.

  • How long will my Gear Box last?

    This will depend upon the media and environment the gearbox is used in but ours are specifically built to a higher standard than most traditional gear boxes. Ours have a 316 Stainless Steel shaft which leads into a fusion bonded epoxy ductile iron body. This has an IP67 weather rating so is ideal for outside use. All fasteners are 316 Stainless Steel to reduce corrosion.

  • How do I install a Gear Box on a Valve?

    The gear box will need to be interfaced with your valve taking into consideration three primary factories; the torque required to operate the valve, the mounting interface on both the valve and gear box and the drive sizes on the valve and gear box. For the torque it is common practice to take the torque required for the valve and add a 30% margin, this then needs to be matched to find the appropriate gear box. For the mounting interface you will need to check the ISO5211 details on the valve & actuator (eg. FO7 interface etc). If this does not fit or is not available on the valve a bracket and drive will need to be used. For the drive interface the male drive on the valve and the female drive on the gear box will need to be matched. These quite often are different and a drive sleeve is used to bridge the two.

  • What are typical uses of a Valve Gear Box?

    These are mainly used on ball and butterfly valves but in reality can be used on anything that requires a 90 degree turn and can be interfaced.

  • How long will my Gear Box take to get to me? 

    This depends upon where you are based and the freight method chosen. If the express freight option is selected it is usually next day delivery to metropolitan areas in Australia for under 5kg. If free freight has been selected it will go by road freight which can be anywhere from 3 to 10 days depending upon your location. It usually averages 3 days.

  • What warranty do I get?

    All of our products come standard with a 12 month warranty. The good news is we have very strict quality controls and all products leave our warehouse tested and inspected so there are rarely any issues. They also come with full material and testing certificates.

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