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TYPE 2800MB
8Pages

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Catalog excerpts

TYPE 2800MB - 1

john crane**.. TYPE 2800MB METAL BELLOWS, GAS-LUBRICATED, NON-CONTACTING, DUAL CARTRIDGE SEAL Technical Specification A - Inner Bellows Assembly B - Stator/Primary Ring C - Rotor/Mating Ring D - Inner Gland E - Outer Gland F -Sleeve G - Rotor/Mating Ring ^ H -Stator/Primary Ring^HB^Kj I -Outer Bellows & Assembly Product Description Performance Capabilities Type 2800MB is a state-of-the-art welded metal bellows, gas-lubricated, non-contacting dual seal cartridge. • 0.0 Fugitive emissions for maximum achievable control technology (MACT) compliance in new or existing large bore seal chambers • For high reliability sealing of volatile fluids in chemical and petrochemical processes • Dual seal alternative for positive sealing of high purity fluids without the potential for product contamination • Extended seal life • Reduced power consumption • Elimination of wet seal lubrication system • Temperature: -40°C to 260°C/-40°F to 500°F (depending on elastomer used) • Seal chamber pressure: up to 16 bar g/230 psig (consult pressure rating limit) • Speed: 1450 rpm minimum/3600 rpm maximum NOTE: Conditions that vary from those listed above can be sealed using other 2800 series products. • Edge-welded metal bellows • Reverse pressure capability* • Spiral groove technology • Non-contacting design • Simplified support system • Static secondary seal • Dual mating ring arrangement meets API 682 design requirements. *Patent number:

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TYPE 2800MB - 2

john crane**,. TYPE 2800MB METAL BELLOWS, GAS-LUBRICATED, NON-CONTACTING, DUAL CARTRIDGE SEAL Technical Specification Type 2800MB Typical Arrangement/Dimensional Data Type 2800MB Dimensional Data (ANSI Sizes, Inches) Seal Dash Seal Dash A B Number Number +.000 +.000 C D K L

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TYPE 2800MB - 3

john crane**.. TYPE 2800MB METAL BELLOWS, GAS-LUBRICATED, NON-CONTACTING, DUAL CARTRIDGE SEAL Technical Specification Type 2800MB Inch-Range Dimensional Data (mm) Seal Dash Seal Dash A B Number Number +.000 +.000 C D K L Inner Outer -0.05 -0.05 Max. Min. E FGHJ (NPT) (NPT)

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TYPE 2800MB - 4

john crane**,. TYPE 2800MB METAL BELLOWS, GAS-LUBRICATED, NON-CONTACTING, DUAL CARTRIDGE SEAL Technical Specification Materials of Construction SEAL COMPONENTS • For pressures higher than 21 bar g/300 psig, apply the Type 2800HP (S-2800HP)* • For standard bore equipment or constrained space, apply the Type 2800E (S-2800E) • For high solids applications, apply the Type 2800EX • For slow speed applications, apply the Type 2800SS** Barrier Pressure (psig) 400 Differential barrier gas pressure minimum 2 bar/30 psi > seal chamber pressure. Minimum barrier gas pressure 4 bar/60 psi recommended....

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TYPE 2800MB - 5

john crane**.. TYPE 2800MB METAL BELLOWS, GAS-LUBRICATED, NON-CONTACTING, DUAL CARTRIDGE SEAL Technical Specification Welded Metal Bellows Bellows design features • Optimum 45° tilt angle • Three-sweep radius • Nesting ripple plate design • Static secondary seal • Light spring loads Bellows benefits • Uniform plate rigidity and stress distribution • Enhanced fatigue strength • Pressure balanced by design • Eliminates problems associated with dynamic O-rings

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TYPE 2800MB - 6

TYPE 2800MB METAL BELLOWS, GAS-LUBRICATED, NON-CONTACTING, DUAL CARTRIDGE SEAL Type 2800MB Barrier Gas Consumption Barrier Gas Consumption (Nl/min) Barrier Gas Consumption (SCFH) 1.375" Barrier Gas Consumption Rate 2.500" Barrier Gas Consumption Rate 8 Barrier Gas Consumption (SCFH) Barrier Gas Consumption (Nl/min) Barrier Gas Consumption (Nl/min) Barrier Gas Consumption (SCFH) 1.750" Barrier Gas Consumption Rate NOTES: 1. Curves are to be used as a guide only. Actual consumption rates may vary. 2. Total barrier gas consumption with 30 psi (2 bar) pressure differential across inner seal. 3....

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TYPE 2800MB - 7

john crane**.. TYPE 2800MB METAL BELLOWS, GAS-LUBRICATED, NON-CONTACTING, DUAL CARTRIDGE SEAL Technical Specification Barrier Gas Supply Systems Available in both standard tamperproof enclosure and panel mounted designs. Standard Components 1 Isolating Ball Valve 2 Coalescing Filter 3 Pressure Regulator 4 Pressure Gauge 5 Flow Meter (Low Range) 6 Flow Meter (High Range) 7 Tubing Clamp 8 Check Valve 9 Coupling (To Seal Piping) 10 Back Panel Options 11 Flow Switch 12 Pressure Switch 13 Enclosure • Isolast™ and Kalrez® for the Check Valve Seat Material • Stand • Enclosures are also available...

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TYPE 2800MB - 8

john crane**,. TYPE 2800MB METAL BELLOWS, GAS-LUBRICATED, NON-CONTACTING, DUAL CARTRIDGE SEAL Technical Specification Isolast is a trademark of Forsheda Palmer Chenard. Kalrez is a registered trademark of DuPont. Latin America Brazil NorthAmerica Europe United States of America United Kingdom Middle East & Africa Asia Pacific United Arab Emirates Singapore smiths bringing technology to life If the products featured will be used in a potentially dangerous and/or hazardous process, your John Crane representative should be consulted prior to their selection and use. In the interest...

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