seal oil barrier

7/27/2019 Seal Oil Barrier

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Complete Source for Mechanical Seal Support Systems

Seal Support Systems



Mechanical Seal Support Systems

John Crane Lemco is your complete source for mechanical seal support

systems. Providing unrivaled expertise, innovation and reliability,

John Crane Lemco is the solution. For over 80 years John Crane has

been redefining the limit of seal support technology.

John Crane is the acknowledged leader in the design and manufacture

of engineered seal support systems. Our customers benefit from our

global presence with over 200 facilities throughout the world.

Our product offering is

unmatched

Lemco provides an extensive product offering,covering the complete spectrum of sealing

applications from liquids to gasses, cryogenic

to boiling, abrasive liquids to the purest

finished product.

A full range of standard product offerings,

including buffer/ barrier fluid reservoirs, heat

exchangers — both air- and water-cooled,

abrasive separators, and pump seal gas

control panels, provide the short lead timesrequired of a pre-engineered product.

Custom engineered systems, such as closed

loop barrier fluid circulators, multiple seal

systems, and compressor gas seal panels,

focus on the specific mechanical seal

application. A close working relationship with

seal design engineers provides a packaged

solution to your sealing challenges.



PLAN 53A

PLAN 52

PS

Reservoirs

RE-1203 / RE-1205

Rated to 200 psig and designed for light

duty applications in the Chemical, Food,

Pharmaceutical, Paper and Pulp, and Water

Treatment Industries.

Capacity: 2.2 Gallons / 8 Liters

Materials: 316 Stainless Steel

RE-1618

Designed for API Plans 52 and 53 applications

in the Refinery, Petrochemical, Chemical

Processing, and Pipeline Industries.

Capacity: 2 to 5 Gallons / 8 to 18.5 Liters

Materials: Carbon Steel, 304 and

316 Stainless Steel

RE-1603

Designed for ANSI Plans 7352 and 7353

applications in the Chemical and

Petrochemical Industries.


Materials: Carbon Steel, 316 Stainless Steel

RE-1518

Ellipsoidal head reservoir for API Plans 52 and

53 applications in the Refinery, Petrochemical,

Chemical Processing, and Pipeline Industries.


Materials: Carbon Steel, 304 and

316 Stainless Steel

RE-1518RE-1618RE-1603RE-1205



Mobile Refill Carts

Available in 10 and 50 gallon capacity, these portable units provide a means to refill a seal reservoir whilestill in operation. Each unit is complete with an atmospheric reservoir, hand pump, and hose assembly

with quick connect end.

Abrasive SeparatorsAbrasive separators improve mechanical seal life by cleaning the stream of process fluid used

to flush the mechanical seal. John Crane provides a range of separators to suit a variety of

pressure, flow, and material requirements.

Flow Rate: 1 to 33 gpm

Materials: 316 Stainless Steel, Monel®, Duplex, and Super Duplex

Max. Pressure: 3000 psi / 207 bar

Leakage Detection Systems

Used in single seal applications to capture and monitor leakage. Available in Carbon Steel

or 316 Stainless Steel construction and equipped with a high level switch.

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Refill Carts, Abrasive Separators,

and Leakage Detection Systems

50 Gallon10 Gallon

Monel is a registered trademark of Inco Alloys International, Inc.



PLAN 52

PLAN 53C

LSL

API 682 Plans 52 and 53A Reservoirs

These reservoirs are designed to meet the requirements of API 682 for Plans 52and 53A. The systems are supplied as complete assemblies ready to install.

These 3 and 5 gallon capacity reservoirs are offered in two versions; welded

ellipsoidal head, and flanged removable bottom head for ease of internal

cleaning. Instruments available are Pressure Indicator, Pressure Switch and

Level Switches.

The API 682 Reservoir Systems are designed for the Refinery, Petrochemical, and

Chemical Industries.

Capacity: 3 Gallon and 5 Gallon Working Capacity

Materials: 316L Stainless Steel

API 682 Plan 53B

Plan 53B is a dual pressurized system that eliminates direct gas contact with the barrier liquid.

The Plan 53B uses a bladder accumulator as a physical barrier between the gas and the barrier

fluid. The bladder is pressurized with gas prior to filling the system with barrier liquid. As the

system is filled, the bladder is compressed thus providing a positive pressure on the barrier liquid.

Circulation is via a pumping ring, and a heat exchanger (air- or water-cooled) is added to the seal-

ing loop to provide cooling.

Capacity: 2.5 / 5 / 10 Gallon Accumulator Size

Materials: Stainless Steel, Monel, Carbon Steel


API 682 Plan 53C

Plan 53C is a dual pressurized system that eliminates the use of gas for pressurization through

the use of a piston reservoir. Barrier liquid is stored on the top side of the piston, which

travels the length of the vessel dependent upon the change in barrier liquid volume.A reference pressure, typically taken from the seal chamber, is provided on the bottom

of the piston. The difference in area on either side of the piston creates a 10% increase in

the barrier liquid pressure across a full range of operating pressures. This system is ideal

for applications that have fluctuating pressures.

Circulation is via a pumping ring, and a heat exchanger (air- or water-cooled) is added to

the sealing loop to provide cooling.

Capacity: 5.25 Gallons

Materials: 316L Stainless Steel


API 682 2nd Edition Products



PLAN 72

FSH

PLAN 75

PSH

API 682 Plan 72 Gas Control Panel

Used in a dual un-pressurized seal arrangement where the secondary seal is dry running. A low-pressuregas, typically nitrogen, is introduced in the area between the two seals to sweep primary seal leakage

away from the secondary seal, thus preventing fugitive emissions from escaping into the atmosphere.

Used in conjunction with Plans 75 or 76.

API 682 Plan 75 Condensate Collection Reservoir

Used in a dual un-pressurized seal arrangement where the secondary seal is dry running. Connected to

the drain port of the seal gland, condensed primary seal leakage is collected and monitored. Constructed

of carbon steel, the minimum system components include a sight level gauge, pressure switch, andremovable head for cleaning of the system. Can be accompanied by Plan 72 to ensure fugitive emissions

are not released into the atmosphere.

API 682 Plan 76 Vent to Flare Panel

Used in a dual un-pressurized seal arrangement where the secondary seal is dry running. Connected to

the vent port of the seal gland, non-condensing primary seal leakage is monitored and routed to the flare

or vapor recovery system. Can be accompanied by Plan 72 to ensure fugitive emissions are not released

into the atmosphere.

API 682 Plan 74 Gas Control Panel

Used on non-contacting, dual pressurized seals, this system filters, regulates,

and monitors the gas supply, typically nitrogen, used to lubricate the seals.

Type 2800 Seals

6

Plan 72 or 74 Gas Control Panel

Note: API 682 is equivalent to ISO Standard 20149.



PLAN 21

PLAN 23

Water-Cooled Heat Exchangers

Primarily for use in Plan 21 and 23 applications, this heat exchanger is alsoavailable in compliance with API 682. Designed for easy installation and

maintenance, the HXR model is ideal for Refinery, Petrochemical, Chemical

Processing, and Pipeline Industries. These heat exchangers can also be

incorporated into seal support system packages.

Standard Materials: Carbon steel shell with 316 Stainless Steel tube

Available Cooling Area: 1.9 Ft2

2.6 Ft2

3.9 Ft2

5.9 Ft

2

7.07 Ft2

Air-Cooled Heat Exchangers

Primarily for use in Plan 21 and 23 applications, these heat exchangers can also be used

as an integral part of a packaged seal support system. Designed for easy installation and

maintenance, the LHXF model is ideal for Refinery, Petrochemical, Chemical Processing,

and Pipeline Industries.

The use of Air-Cooled Heat Exchangers eliminates the need for cooling water and

provides substantial savings in reduced water usage, waste-water treatment, and the

elimination of cooling water piping.

Standard Materials: 316 Stainless Steel tube with 304 Stainless Steel tension

wrapped fins, 304 Stainless Steel base and frame

Available Cooling Area: 19 Ft2

29 Ft2

39 Ft2

Heat Exchangers in Packaged Systems

Seal support systems can be designed and packaged using the John Crane heat

exchangers. These systems are varied in their duty and design, and can be used in

seal oil systems, lube oil systems, and closed loop circulation systems.

Heat Exchangers



8

Compressor Gas Control Panels

Application-specific control systems ensure a clean,

controlled flow of gas to non-contacting seals used in

compressor applications, while monitoring seal perfor-

mance. John Crane Lemco seal support systems create the

ideal seal environment to maximize seal performance,

increase seal life, extend Mean Time Between Planned

Maintenance, and improve emissions control.

John Crane Lemco seal support systems

include Type 28XP and 28AT panels in

tandem and double configurations.

John Crane Lemco works closely with all parties in order to match theproper panel with the application. Each panel is tailored to meet the end-

user’s specifications, which ensures integration with the plant’s control

system and maintains commonality of components.

Complete packages include filtration and systems for monitoring process gas

supply, seal leakage, and separation gas supply. The systems reliably control and

monitor pressure and/or flow with signals for alarm annunciation and automatic

shutdown when specific limits are exceeded.

Type 28 Gas Panel Gas Conditioning Unit(patent number 6715985)

Filter Assembly

Type 28XP Cutaway



API Plan 54

When barrier liquid requirements for dual pressurized seals exceed the capabilities of a traditionalPlan 53, a Seal Oil System is used. Designated as Plan 54 by API 682, these systems provide flow and

heat removal capabilities exceeding that of a traditional Plan 53 system.

Standard units are available in 10, 20, and 30 gallon capacities, with flows ranging from 1.5 to 4.5 gpm,

and pressures to 3000 psi.

Custom units are available in a wide variety of configurations and can be built to service multiple seals.

Available options include:

• Spare pump assembly

• Duplex filters with

isolation valves

• Air-cooled heat exchangers

• Multiple seal kits

• Pressure maintenance

package

Seal Oil Systems

Note: These systems can also be configured for use in lube oil applications.

Shown with Air-Cooled Heat Exchanger

Standard 10 and 20 Gallon Units



Our capabilities also include a wide range of custom, closed loop seal oil systems. Used in conjunction with

dual pressurized seals, closed loop systems remain under constant pressure and typically provide the means

to automatically replenish the barrier fluid as required.

10

Shown with Accumulator Safety Package

Custom Lube Oil Skid

System used in mining application,providing seal water to autoclave seals.

System supports six dual pressurized seals, consistsof bladder accumulators and automated refill system.



For your nearest John Crane facility, please contact one of the locations above.

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 of continuous development, John Crane Companies reserve the right to alter designs and specifications without prior notice. It is dangerous to smoke while handlingproducts made from PTFE. Old and new PTFE products must not be incinerated.

©2004 John Crane Inc. Print 4/04 www.johncrane.com B-LEMCO

John Crane Lemco

Tulsa, Oklahoma USA

Tel: 1-918-835-7325Fax: 1-918-835-5823

NorthAmerica

Morton Grove, Illinois USA

1-800-SEALINGTel: 1-847-967-2400Fax: 1-847-967-3915

Europe

Slough, UK

Tel: 44-1753-224000Fax: 44-1753-224224

Latin America

São Paulo, Brazil

Tel: 55-11-3371-2500Fax: 55-11-3371-2599

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