Brand: Masoneilan

Masoneilan 37002 Series MiniTork II Butterfly Control Valves

Name: Masoneilan 37002 MiniTork II Butterfly Control Valve
Brand: Masoneilan

Description

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 the lead time and respond with a formal quotation.

Related Products

Also available: Masoneilan 41005 Series Cage-Guided Valve Seal & Packing Kit · Masoneilan 84000 Series SteamForm Steam Conditioning Valve · Bray Series 30/31 Resilient-Seated Butterfly Valve · Neles Series X2 Modular Ball Valve

Datasheets & Documents

Datasheet Masoneilan 37002 Series MiniTork II Butterfly Control Valves Datasheet Download

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About brand

Masoneilan has built control valves since 1882, and its Camflex eccentric plug rotary valve and 21000 series globe valve are fixtures in refineries, gas plants and power stations. Every valve carries a serial number and a long model number that defines the actuator, body and trim.

Seven Star LLC is an independent supplier listing Masoneilan control valves, actuators, regulators, positioners and level instruments for buyers in Oman and the GCC. We source complete valves as well as Masoneilan spare parts against that nameplate data.

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.

Frequently Asked Questions

What sizes of MiniTork II are available?

The 37002 Series MiniTork II is available in sizes from 2 to 12 inches (50 to 300 mm) as a wafer body for mounting between flanges rated ANSI 150-300 or UNI-DIN 10-40.

How does the MiniTork II achieve low operating torque?

The unique cupped disc shape generates considerably lower dynamic torque than conventional butterfly discs, and the reverse-cupped construction maintains that low torque in both flow directions.

What materials are used for the body and liner?

Body materials are carbon steel or stainless steel, with replaceable liners in Buna-N, Viton or Nordel selected for the process media and temperature.

Which actuator does the MiniTork II use?

It is fitted with the Model 33 spring diaphragm actuator, which fully encloses all moving parts for increased resistance to environmental corrosion.

What makes MiniTork II positioning accurate?

The splined and clamped disc-to-shaft construction eliminates backlash, a triple bearing system supports the shaft, and direct-mounted positioners connect feedback directly to the valve shaft to remove lost motion.

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