Handwheel manual reducer
The range of reducers (quarter of turn) for the butterfly valves is made up of two series X and Q. The denomination MDV of the reducers concerns both series X and Q. The range MDV concerns twelve (12) models of manual reducers DN32 to DN1600.
The reducers series X to be installed on the Butterfly valves DN32 to DN350 are light and easy to handle with an aluminum casing coated with epoxy powder. Standard protection IP67 and possibilities of protection IP68 on request. There are four (4) models in order to work with operating torques up to 600 Nm.
The reducers series Q to be installed on the Butterfly valves DN400 to DN1600 are manufactured with a ductile iron casing coated with epoxy powder and final layer of polyurethane. Protection IP68. Composed of eight (8) models in order to work with operating torques up to 7000 Nm.
Quarter of turn 0° TO 90° adjustable with a MARGIN of ± 5°.
Operating temperature between -25 °C and +110 °C (- 13 °F to 230 °F).
Features
Field of use
The manual reducers are used in the markets of water supply and sewage as well as the industrial applications like fire protection networks, water treatment, desalinization, mines…
They are installed on the concentric butterfly valves, pressure relief valve, etc…
Added-values
Shaft in stainless steel.
Axial needle bearings.
O'ring NBR 70.
External visualization of position.
Internal bearing interchangeable between series X and Q.
Connection in conformity with ISO 5211.
Choice
| Type of Reducer | DN | Model for PN10 bar | Model for PN16 bar | Connection to valve shaft | Handwheel Ø and H |
|---|---|---|---|---|---|
| X | 32-100 | MDV-0 / Type X-21 | ☐ 11 | Ø125 and 42 | |
| 125-150 | MDV-1 / Type X-21 | ☐ 14 | Ø160 and 48 | ||
| 200 | MDV-1A / Type X-41 | ☐ 17 | Ø200 and 53 | ||
| 250-350 | MDV-2 / Type X-61 | ☐ 22 | Ø250 and 66 | ||
| Q | 400 | MDV-2A / Type Q-800 | ☐ 27 | Ø300 and 86 | |
| 450-500 | MDV-3 / Type Q-2000 | ☐ 36 | Ø400 and 122 | ||
| 600 | MDV-4 / Type Q-4000 | Ø 60 | Ø500 and 141 | ||
| 700 | MDV-4 / Type Q-4000 | MDV-5 / Type Q-6500 | Ø 65 | Ø600 and 157 | |
| 750 | MDV-6 / Type Q-12000 | Ø 80 | Ø600 and 157 | ||
| 800 | MDV-5 / Type Q-6500 | - | Ø 80 | Ø600 and 157 | |
| - | MDV-6 / Type Q-12000 | Ø 80 | Ø700 and 180 | ||
| 900 | MDV-6 / Type Q-12000 | Ø 80 | Ø700 and 180 | ||
| 1000 | MDV-7 / Type Q-16000 | Ø 80 | Ø700 and 180 | ||
| 1100 | MDV-7 / Type Q-16000 | MDV-8 / Type Q-24000 | Ø 80 | Ø700 and 180 | |
| 1200 | MDV-8 / Type Q-24000 | Ø 100 | Ø700 and 180 | ||
| 1400 | MDV-8 / Type Q-24000 | - | Ø 120 | Ø700 and 180 | |
| 1600 | MDV-9 / Type Q-32000 | - | Ø 130 | Ø700 and 180 | |
| Type | A | B | C | D | E | F | H | J | K |
|---|---|---|---|---|---|---|---|---|---|
| MDV-0 | 84 | 118 | 43.5 | 50.5 | 128 | 51.2 | 125 | F-07 | 11 |
| MDV-1 | 84 | 118 | 43.5 | 50.5 | 135 | 51.2 | 160 | F-07 | 14 |
| MDV-1A | 112 | 138.5 | 52.5 | 57.0 | 152 | 63.5 | 200 | F-07/F-10 | 17 |
| MDV-2 | 120 | 170.5 | 61.5 | 70.5 | 222 | 77.0 | 250 | F-10/F-12 | 22 |
| Type | Maxi output torque | Maxi input torque | Ratio | Number of turns to close | Mass | Mechanical advantage |
|---|---|---|---|---|---|---|
| MDV-0 | 200 Nm | 16.8 Nm | 40:1 | 10 | 1.2 | 11.9% |
| MDV-1 | 200 Nm | 16.8 Nm | 40:1 | 10 | 1.4 | 11.9% |
| MDV-1A | 400 Nm | 31.25 Nm | 44:1 | 11 | 2.6 | 12.8% |
| MDV-2 | 600 Nm | 46.5 Nm | 34:1 | 8.5 | 3.5 | 12.9% |
| Item | Description | Material | Quantity |
|---|---|---|---|
| 1 | Body | Aluminium | 1 |
| 2 | Cover plate | Aluminium | 1 |
| 3 | Position indicator | Polyethylene | 1 |
| 4 | Quadrant | Cast iron GGG-40 - ASTM A356 | 1 |
| 5 | Worm | Carbon steel C45/AISI 1045 | 1 |
| 6 | Shaft | Stainless steel AISI 303 | 1 |
| 7 | Axial needle bearing | AXK-AS | 2 |
| 8 | Tightness joint | Nitrile/Silicone | 1 |
| 9 | Joint | Nitrile | 2 |
| 10 | Grease | Lithium/Calcium | 1 |
| 11 | Plain bearing | Permaglide P-10 | 2 |
| 12 | Inserts | Steel | 1 |
| 13 | Screw | Steel 45H : DIN 915 | 2 |
Range of reducers MDV-2A to MDV-4 (Series Q)
| Type | A | B | C | D | E | F | H | J |
|---|---|---|---|---|---|---|---|---|
| MDV-2A | 135 | 187 | 69 | 72.5 | 278 | 90.5 | 300 | F-10/F-14 |
| MDV-3 | 180 | 235 | 96.5 | 91.5 | 321 | 100 | 400 | F-12/F-16 |
| MDV-4 | 282 | 326 | 137.5 | 140 | 408 | 128 | 500 | F-16/F-25 |
| Type | Maxi output torque | Maxi input torque | Ratio | Number of turns to close | Mass | Mechanical advantage |
|---|---|---|---|---|---|---|
| MDV-2 | 800Nm | 60 Nm | 40:1 | 10 | 8.9 | 13.3% |
| MDV-3 | 2000 Nm | 131 Nm | 48:1 | 12 | 18.4 | 15.3% |
| MDV-4 | 4000 Nm | 185 Nm | 72:1 | 18 | 34.2 | 21.6% |
| Item | Description | Material | Quantity |
|---|---|---|---|
| 1 | Body | Cast iron GG-25 - ASTM A48 | 1 |
| 2 | Cover plate | Cast iron GG-25 - ASTM A48 | 1 |
| 3 | Position indicator | Cast iron GG-25 - ASTM A48 | 1 |
| 4 | Quadrant | Cast iron GGG-40 - ASTM A356 | 1 |
| 5 | Worm | Carbon steel C45/AISI 1045 | 1 |
| 6 | Shaft | Stainless steel AISI 303 | 1 |
| 7 | Axial needle bearing | AXK-AS | 2 |
| 8 | Tightness joint | Nitrile/Silicone | 1 |
| 9 | Joint | Nitrile | 2 |
| 10 | Grease | Lithium/Calcium | 1 |
| 11 | Plain bearing | Steel | 2 |
| 12 | Screw | Steel 45H : DIN 915 | 2 |
Range of reducers MDV-5 to MDV-9 (Series Q)
| Type | A | B | C | D | E | F | H | J |
|---|---|---|---|---|---|---|---|---|
| MDV-5 | 282 | 326 | 137.5 | 140 | 456 | 128 | 600 | F-16/F-25 |
| MDV-6 | 376 | 396 | 180.0 | 156 | 510 | 135 | 700 | F-25/F-30 |
| MDV-7 | 376 | 396 | 180.0 | 156 | 579 | 135 | 700 | F-25/F-30 |
| MDV-8 | 510 | 536 | 252.5 | 201 | 593 | 189 | 700 | F-25/F-40 |
| MDV-9 | 510 | 536 | 252.5 | 201 | 593 | 189 | 700 | F-25/F-40 |
| Type | Maxi output torque | Maxi input torque | Ratio | Number of turns to close | Mass | Mechanical advantage |
|---|---|---|---|---|---|---|
| MDV-5 | 6500Nm | 95 Nm | 267:1 | 67 | 41.0 | 68.4% |
| MDV-6 | 12000 Nm | 168.48 Nm | 267:1 | 67 | 60.6 | 71.0% |
| MDV-7 | 16000 Nm | 120 Nm | 648:1 | 162 | 66.4 | 133.3% |
| MDV-8 | 24000 Nm | 140 Nm | 720:1 | 180 | 196.0 | 171.5% |
| MDV-9 | 32000 Nm | 140 Nm | 960:1 | 240 | 196.0 | 228.6% |
| Item | Description | Material | Quantity |
|---|---|---|---|
| 1 | Body | Cast iron GG-25 - ASTM A48 | 1 |
| 2 | Cover plate | Cast iron GG-25 - ASTM A48 | 1 |
| 3 | Position indicator | Cast iron GG-25 - ASTM A48 | 1 |
| 4 | Quadrant | Cast iron GG-25 - ASTM A48 | 1 |
| 5 | Worm | Carbon steel C45/AISI 1045 | 1 |
| 6 | Shaft | Stainless steel AISI 303 | 1 |
| 7 | Axial needle bearing | AXK-AS | 2 |
| 8 | Tightness joint | Nitrile/Silicone | 1 |
| 9 | Joint | Nitrile | 2 |
| 10 | Grease | Lithium/Calcium | 1 |
| 11 | Plain bearing | Steel | 2 |
