Masoneilan 87/88 Extended Temperature Kits, Actuator Spare Parts (-40 to 100 °C)
Overview
The Masoneilan 87/88 extended temperature kits are four actuator spare parts kits that Baker Hughes lists as “Low & High Temp. -40 to 100°C”: 720054349-999-0000 for size 6, 720054350-999-0000 for size 10, 720054351-999-0000 for size 16 and 720054352-999-0000 for size 23. They are the only 87/88 kits whose numbers fall in the 7200543xx series. The wider window is the point: the actuator keeps its design performance from −40°C to +100°C, 10°C colder and 17°C hotter than the standard class.
In Oman and the GCC, Seven Star LLC supplies the Masoneilan 87/88 extended temperature kits to operators in Oman and the GCC whose actuators sit near hot process lines, in sun-exposed skid enclosures or in cold-weather export facilities. We confirm the temperature construction on the actuator serial plate before quoting, because a nitrile kit and a silicone kit are not interchangeable.
Masoneilan 87/88 Extended Temperature Kits: The Four Part Numbers
| Part number | Actuator size | Effective diaphragm area | Fact-sheet description |
|---|---|---|---|
| 720054349-999-0000 | 6 | 60 sq. in. | Low & High Temp. -40 to 100°C |
| 720054350-999-0000 | 10 | 100 sq. in. | Low & High Temp. -40 to 100°C |
| 720054351-999-0000 | 16 | 160 sq. in. | Low & High Temp. -40 to 100°C |
| 720054352-999-0000 | 23 | 230 sq. in. | Low & High Temp. -40 to 100°C |
The fact sheet publishes no −40°C kit for the long-stroke size 23L, so a 23L actuator with this temperature construction should be raised with Baker Hughes through Seven Star LLC rather than assumed to take a size 23 kit.
How the Masoneilan 87/88 Extended Temperature Kits Change the Materials
The 87/88 technical specification gives three design ranges: standard (−30 to +83°C), extended (−40 to +100°C) and ultra-low (−50 to +100°C). In the Masoneilan 87/88 extended temperature kits the O-rings (items 12, 13 and 85) change from Buna-N to silicone, and the diaphragm (item 25) changes to silicone rubber with Dacron fabric. The yoke (item 31) is ASTM A352 Gr. LCC with a hardness limit of HRc 22 maximum. The manual lists the rod scraper (11a), O-rings 12, 13 and 85, diaphragm 25 and yokes 31 and 31a as the items for this option; everything else is “same as standard”. The silicone rubber is orange, so a technician opening the case sees at once whether the existing diaphragm is silicone.
Grease Rules for the Masoneilan 87/88 Extended Temperature Kits
Sections 7 and 8 of the manual warn against silicone grease on the silicone rubber of the high and low temperature option. A fluorinated grease, NIPPON KOYU LTD. “LOGENEST LAMBDA” or equal, replaces the Dow Corning Valve Lubricant and Sealant Compound III used on standard parts. Add it to the job pack when ordering. Other assembly rules match the standard class: tension bolts come off last and in steps, and case bolts are tightened evenly to the Table 3 values, 21 ft-lb on size 6, 25 on size 10, 30 on size 16 and 31 on size 23, each ±10 percent.
Key Features
- Masoneilan 87/88 extended temperature kits in four numbers for actuator sizes 6, 10, 16 and 23
- Design range of −40°C to +100°C for wide temperature swings
- Silicone rubber diaphragm with Dacron fabric and silicone O-rings
- Low-temperature ASTM A352 Gr. LCC yoke specified for the option
- Fits Type 87 (air to close) and Type 88 (air to open) actuators
Industrial Applications
Baker Hughes lists steam turbine generator systems, condensers, heat recovery steam generators, distillation, hydroprocessing, compression, refrigeration, liquefaction and regasification among the markets of the 87/88 actuator family. In Oman these map to combined-cycle power and desalination sites, the Sohar refining and petrochemical complex and gas treatment plants, where an actuator may sit on a hot bypass or near a steam vent. The Masoneilan 87/88 extended temperature kits give 17°C of headroom over the 83°C standard class. The complete actuator is described on the Masoneilan Type 87/88 actuator page, and the standard size 16 kit remains the right choice for ordinary service.
Ordering the Masoneilan 87/88 Extended Temperature Kits
To order the Masoneilan 87/88 extended temperature kits, give us the actuator size (6, 10, 16 or 23), the action (87 or 88), the temperature option shown on the serial plate or order record and the quantity. The fact sheet publishes no −40°C kit for the long-stroke 23L, so a 23L with this construction should be raised with Baker Hughes through Seven Star LLC rather than assumed to take a size 23 kit. If the nameplate carries a special-option appendix number, add it, because the manual states that an appendix prevails over the general instructions.
Compare the Masoneilan 87/88 standard temperature kits and Masoneilan 87/88 ultra-low temperature kits before ordering.
Related published Masoneilan pages: Masoneilan 010865-003-779 size 10 diaphragm.
Technical Specifications
The table lists the data Baker Hughes publishes for the Masoneilan 87/88 extended temperature kits.
| Parameter | Specification |
|---|---|
| Model | Masoneilan 87/88 extended temperature kits (actuator spare parts kits, -40 °C low and high temperature) |
| Manufacturer | Masoneilan (Baker Hughes) |
| Part numbers | 720054349-999-0000 (size 6); 720054350-999-0000 (size 10); 720054351-999-0000 (size 16); 720054352-999-0000 (size 23) |
| Temperature class | Low & High Temp. -40 to 100°C |
| Design range | −40°C to +100°C (−40°F to +212°F) |
| Diaphragm material | Silicone rubber with Dacron fabric |
| O-ring material | Silicone |
| Changed items per manual | 11a, 12, 13, 25, 31, 31a, 85 |
| Yoke grade | ASTM A352 Gr. LCC, HRc 22 maximum |
| Recommended grease | Fluorinated grease (LOGENEST LAMBDA or equal); no silicone grease |
| Source documents | Actuator Rebuild Kits Fact Sheet; 87/88 Technical Specifications; 87/88 Instruction Manual Rev. G |
Request a Quote for Masoneilan 87/88 extended temperature kits
Request a quotation for the Masoneilan 87/88 extended temperature kits from Seven Star LLC with the actuator size, serial number and quantity. In Oman and the GCC, we provide the Baker Hughes rebuild-kit fact sheet and technical specification linked on this page, confirm regional availability and support delivery to your site. Contact our Muscat instrumentation division for a formal RFQ.
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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