Pneumatic Tuffy®
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Catalog excerpts

Pneumatic Tuffy® - 1

TUFFY® T3Side Mounting Level Controls Tuffy liquid level switches are float actuated devices designed for horizontal mounting in a tank or vessel through threaded or flanged pipe connections. The compact size allows for installation in small vessels, while its many features provide a variety of application uses. The single switch mechanism is available in SPDT or DPDT forms on units designed for adjustable, narrow or wide differential and interface service. FEATURES * Maximum Process temperature: +400 °C (750 °F). Minimum Process temperature: -55 °C (-65 °F). * Maximum process Pressure: 150 bar abs (2160 psi). * Specific gravities as low as 0.4. * Wetted parts in 316/316L (1.4401/1.4404) or Hastelloy C (2.4819). * Available as: - Flanged - Threaded - Flanged or sealed cage mounted. ® Consult factory for proper partnumbers MODELS * Narrow differential switch (for alarm functions) - standard pressure (up to 50 bar abs (720 psi) - high pressure (up to 150 bar (2160 psi). * Wide adjustable differential switch (for control functions) * Interface switch (detection of interface level between liquids). * External cages. * Compact versions: - pneumatic narrow differential switch - electric narrow differential switch. APPLICATIONS * Sour service (NACE). * High/low alarm. * Single pump control. * Day storage tanks. * Corrosive processes. * Process vessels. * Boiler low water cut off. * Interface level. * Dirty process high level w/offset. * Installations in hazardous area. AGENCY APPROVALS

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Pneumatic Tuffy® - 2

SWITCH MECHANISMS All TUFFY® are available with a selection of switch modules that vary in switch rating (Amp) and max process temperature allowance. The max temperature is dependent upon the housing material selected. Consult table below, before selecting the proper module in the order number structure on pages 3, 5, 7 or 9.

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Pneumatic Tuffy® - 3

The Tuffy achieves switching action through the use of a magnetic switch mechanism and a magnet attached to the float assembly. Separating the two magnets is a non-magnetic pressure barrier. As the liquid level changes, the float, and therefore the float magnet, moves. The float and switch magnets repel each other causing movement of the switch mechanism, tripping the switch and making or breaking an electrical circuit. Float Magnet Non-magnetic Float holder (pressure boundary) Switch Magnet SELECTION DATA Narrow Differential: Wide Differential: Interface Service: Single Liquid: Adjustable...

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Pneumatic Tuffy® - 4

T31 AND T35: THREADED NARROW DIFFERENTIAL DIMENSIONS in mm (inches) ORDER CODE Process connection: 2" NPT Max temperature: switch selection dependant – see table on page 2 Max pressure: 50 bar abs. (720 psi) / 103 bar abs. (1500 psi) Level Differential: 13 mm (0,5") T 3 1 - 0 0 2 N T 3 5 - 0 0 2 N Threaded Tuffy with 316/316L (1.4401/1.4404) float - min. S.G. 0,4 / max 50 bar abs. ( 720 psi) Threaded Tuffy with 316/316L (1.4401/1.4404) float - min. S.G. 0,6 / max 103 bar abs. (1500 psi) DESIGN CODE (All wetted parts in 316/316L (1.4401/1.4404)) Standard design ANSI/ASME B31.3 design NACE...

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Pneumatic Tuffy® - 5

ORDER CODE Process connection: up to 600 lbs ANSI / PN 63 flanges Max temperature: switch selection dependant - see table on page 2 Max pressure: 50 bar abs. (720 psi) /103 bar abs (1500 psi), or limited to flange rating. Level Differential: 13 mm (0.5")

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Pneumatic Tuffy® - 6

ORDER CODE Process connection: up to 900 lbs ANSI / PN 160 flanges Max temperature: switch selection dependant - see table on page 2 Max pressure: 150 bar abs. (2160 psi) Level differential: 13 mm (0,5") Flanged Tuffy with 316/316L (1.4401/1.4404) float - min. S.G. 0,6 / max 150 bar abs. (2160 psi) PROCESS CONNECTION - EN/DIN Flanges complete order code for flanged high pressure TUFFY®

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Pneumatic Tuffy® - 7

Process connection: up to 300 lbs ANSI / PN 40 flanges Max temperature: switch selection dependant - see table on page 2 Max pressure: 50 bar abs. (720 psi) Level Differential: adjustable from 35 mm (1.36") to 464 mm (18.26") T 3 C Adjustable diff. Tuffy with 316/316L (1.4401/1.4404) float - min. S.G. 0,78 / max 50 bar abs. (720 psi) STEM EXTENSION LENGTH - DIMENSION "A" PROCESS CONNECTION - ANSI Flanges PROCESS CONNECTION - EN/DIN Flanges DESIGN CODE AND FLANGE MATERIAL

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Pneumatic Tuffy® - 8

ORDER CODE Process connection: up to 300 lbs ANSI / PN 40 flanges Max temperature: switch selection dependant - see table on page 2 Max pressure: 50 bar abs. (720 psi) Min S.G. of lower liquid: 0,81 kg/dm3 Min S.G. difference between both liquids: 0,1 kg/dm3 Level differential: 44 mm (1.72") Interface Tuffy with 316/316L (1.4401/1.4404) float - max 50 bar abs. (720 psi)

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Pneumatic Tuffy® - 9

039: PNEUMATIC COMPACT TUFFY (Narrow differential) DIMENSIONS in mm (inches) SP. GR. 0.4 min – 226 (8.91) Float size = 51 ø x 130 long (2.00 x 5.12) SP. GR. 0.6 min – 202 (7.96) Float size = 51 ø x 116 long (2.00 x 4.57) 1/4" NPT inlet connection standard (B) 1/4" NPT inlet connection standard (A) NPT outlet connection standard (C) Switch actuates rising level Switch actuates falling level float minimum clearance 95 (3.75) ORDER CODE Process connection: 2" NPT Max temperature: 150 °C (300 °F) @ 103 bar (1500 psi) - S.G: 0,6 and 34 bar (500 psi) - S.G: 0,4 Max pressure: 103 bar (S.G: 0,6), 34...

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Pneumatic Tuffy® - 10

CAGE - STYLE Flanged type 035 cage Sealed type 033 cage chamber flange CAGE - PROCESS CONNECTION

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Pneumatic Tuffy® - 11

ORDER CODE complete order code for external cage

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Pneumatic Tuffy® - 12

QUALITY ASSURANCE - ISO 9001:2000 THE QUALITY ASSURANCE SYSTEM IN PLACE AT MAGNETROL GUARANTEES THE HIGHEST LEVEL OF QUALITY DURING THE DESIGN, THE CONSTRUCTION AND THE SERVICE OF CONTROLS. OUR QUALITY ASSURANCE SYSTEM IS APPROVED AND CERTIFIED TO ISO 9001:2000 AND OUR TOTAL COMPANY IS COMMITTED TO PROVIDING FULL CUSTOMER SATISFACTION BOTH IN QUALITY PRODUCTS AND QUALITY SERVICE. PRODUCT WARRANTY ALL MAGNETROL MECHANICAL LEVEL CONTROLS ARE WARRANTED FREE OF DEFECTS IN MATERIALS AND WORKMANSHIP FOR FIVE FULL YEARS FROM THE DATE OF ORIGINAL FACTORY SHIPMENT. IF RETURNED WITHIN THE WARRANTY...

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