Masoneilan 37002 Series MiniTork II Butterfly Control Valves
Overview
This page is the family overview of the Masoneilan 37002 Series MiniTork II: body, liner, size, rating and flow data for the whole range. Actuator-specific configuration details are covered on separate pages.
For configuration details of a specific actuator (mounting positions, valve action, installation and maintenance from the instruction manual), see the Masoneilan 37002 with Model 33 spring-diaphragm actuator and Masoneilan 37002 with Model 35 heavy duty actuator.
The Masoneilan 37002 Series MiniTork II is a heavy-duty throttling control butterfly valve from Baker Hughes. Its reverse-cupped 316 stainless steel disc produces a dynamic torque considerably lower than conventional butterfly valves, allowing a compact actuator and stable throttling with universal flow direction.
The valve is a cast wafer body with integral extension bonnet, clamped between ANSI Class 125, 150, 250 or 300 line flanges, and is supplied with the Masoneilan Model 33 spring-diaphragm pneumatic actuator. It belongs to the Masoneilan conventional butterfly control valve range.
Key Features
- Low dynamic torque reverse-cupped disc
- Universal (bi-directional) flow
- Triple bearing system for shaft support and guiding
- Integrally cast extension bonnet for a wide temperature range
- Model 33 spring-diaphragm actuator with enclosed moving parts, field-reversible fail action
- Replaceable elastomer liner for Class VI shutoff or unlined metal-seal design
- Highly visible valve position indicator
Technical Specifications
| Parameter | Value |
|---|---|
| Model | 37002 Series MiniTork II |
| Sizes | 2 to 12 in (DN 50 to 300) |
| Body type | Cast wafer with integral bonnet |
| Body materials | Carbon steel ASTM A216 WCB; stainless steel ASTM A351 CF8M |
| Rating | ANSI Class 300 |
| Connections | Flangeless, between ANSI Class 125, 150, 250 and 300 flanges |
| Disc | Reverse-cupped, 316 stainless steel |
| Shaft | 17-4 PH stainless steel (316 optional) |
| Liners | Buna-N +10 to +180 °F; Nordel -30 to +250 °F; Viton -10 to +400 °F |
| Temperature, unlined | SS body -250 to +500 °F; CS body -20 to +500 °F |
| Seat leakage | Metal seal 2% (2-4 in) / 1% (6-12 in) of rated Cv; elastomer seat ANSI/FCI 70.2 Class VI |
| Flow characteristic | Equal percentage |
| Rangeability | 100:1 |
| Rated Cv (75° opening) | 2 in: 90; 3 in: 280; 4 in: 480; 6 in: 1330; 8 in: 2370; 10 in: 3700; 12 in: 5300 |
| Actuator | Model 33 spring diaphragm, bench range 7-14 psig (B) / 9-15 psig (C) |
| Pressure recovery factor FL | 0.65 at maximum opening |
| Actuator effective area | Size B 70 sq in (450 cm²); size C 140 sq in (900 cm²) |
| Actuator size by valve | Size B on 2 to 6 in valves; size C on 8 to 12 in valves |
| Actuator stroke | 2.25 in (57 mm) |
| Actuator air connection | 1/4 in NPT |
| Shaft diameter | 0.500 in (2, 3 in); 0.625 in (4, 6 in); 1.000 in (8 to 12 in) |
| Guide bushings | Stellite Alloy 6 |
| Packing | Carbon-core braided PTFE; PTFE fibre ring or EF seal (fugitive emission) optional |
| Assembly weight | 27 kg (2 in) to 84 kg (12 in); add 10 kg with handwheel |
| Metric flange compatibility | Also fits between DIN PN 10, 16, 25 and 40 flanges |
| Handwheel (optional) | 10 in (254 mm) diameter, push-type tilting |
Applications
- Throttling control of water, cooling water and seawater services in power and desalination plants
- Gas and liquid flow control in oil and gas and petrochemical units
- Utility air and steam lines within the liner temperature limits
- Chemical and wastewater treatment processes
Masoneilan 37002 MiniTork II Ordering Code and Options
The MiniTork II model number is written as actuator type followed by body series, for example 33-37x2y. The first two digits, 33, identify the Model 33 spring-diaphragm actuator, which always extends its stem on increasing air and can be supplied with or without an auxiliary handwheel. The body series is 37.
The next digit gives the actuator mounting and the resulting valve action. Codes 1, 3 and 5 are air-to-close arrangements and codes 2, 4 and 6 are air-to-open. Codes 1 and 2 place the actuator horizontal above the shaft centre line, 3 and 4 vertical above centre, and 5 and 6 horizontal below centre. Positions 3 and 4 are the standard mounting. The following digit, 2, is the design series, and the last digit is the bore type: 1 for an unlined (metal seal) valve and 2 for an elastomer-lined valve.
Because the stem always extends on air, fail action is changed in the field by moving the actuator to the other hole in the bracket. Handwheel and positioner are optional and should be stated on the order, together with size, body material and liner material.
Masoneilan 37002 MiniTork II Installation Notes
Install the valve with the disc closed and with the actuator in one of the recommended positions; flow may be in either direction. Lined valves are fitted without gaskets because the liner acts as its own seal, and the mating flange bore must match the liner bore and cover its whole face. Unlined valves need gaskets. Baker Hughes recommends weld-neck or flat-face flanges with Schedule 40 bore and does not recommend slip-on or screwed flanges with lined valves. Do not insulate the bonnet. After bolting up, rotate the disc by hand through 90 degrees to confirm clearance.
Why Seven Star LLC
Seven Star LLC supplies Masoneilan 37002 MiniTork II valves, liners, discs and actuator parts across Oman and the GCC. Before quoting, we check the valve serial number or nameplate data so that size, body material, liner and actuator action match the installed valve.
Request a Quote for Masoneilan 37002 Series MiniTork II Butterfly Control Valves
Send the valve size, quantity, body material, liner or metal-seal requirement, flange class, fail action and process conditions, or the serial number of an installed valve, through our Inquiry Form. We will confirm availability and respond with a formal quotation.
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- Datasheet Masoneilan 37002 Series MiniTork II Butterfly Control Valves Datasheet Download
Masoneilan control valves and actuator series
The globe valve listing centers on the 21000 series, including the cryogenic version with extension bonnet, and the 41005 cage-guided series in high pressure, API 6A and VRT anti-cavitation executions. The 80385 and 80386 are three-way combining and diverting valves. Rotary products include the 35002 Camflex II and the 37002 MiniTork II butterfly control valve. Actuators cover spring-diaphragm, cylinder and rack-and-pinion designs, among them the 5A cylinder actuator for Camflex II. Masoneilan also makes pressure regulators, SVI digital valve positioners and displacer-type level instruments, and offers Lo-dB trim for noise control.Where Masoneilan valves are used
Throttling duty on steam, hydrocarbons, gas and water is the daily work of these valves: feedwater and steam conditioning in power plants, separator and compressor loops in gas processing, high pressure drop letdown, cryogenic service in LNG and air separation, and general flow, pressure and level control in refineries and chemical plants.Ordering Masoneilan valves and spare parts: what we need
For spare parts the serial number is decisive, since the factory record behind it lists trim, materials and actuator. Send a clear nameplate photo with serial number, model number, size and pressure class. For a new valve add the process data: fluid, inlet and outlet pressure, temperature, minimum, normal and maximum flow, required leakage class, fail position, air supply and control signal.Browse Masoneilan products by category: Control Valves, Valve Actuator, Regulators, Valve Positioner, Level Transmitter.
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