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Howell Laboratories, Inc.

P. O. Box 389, 188 Harrison Rd., Bridgton Maine 04009 USA
(207) 647-3327 (888) 744-8359 FAX (207) 647-8273 contracts@howelllabs.com

- An Employee-Owned Company -
Certified to ISO 9001:2000

HLI News
New contract: 7600 ECOLCELL Chlorinators for DDG-113 and follow ships.
[More]
New Products
Portable seawater chlorinator: Port-A-Chlor 8600.
[More]

Upgraded medium-pressure air dehydrator, Model 8785, to replace our obsolete Model 7053.
Call now for more information

Customized potable water treatment systems for Iraqi 35m patrol boats ...
... or for your application!
Call now for more information
Around the World
January 2010:
HLI supporting relief efforts in Haiti
At HLI
September 2008: David Douglas joins HLI as Director of Sales, Marine Products.

Parts for Model 7974 Mk I
Cargo Refrigeration Control Air Dehydrator

(Preliminary)

NOTE: This list does not include hardware items such as bolts, nuts, washers, and O-rings. The manufacturer uses stainless steel hardware in standard U. S. sizes, and MIL-SPEC O-rings.
Howell Laboratories, Inc. is CAGE 22501.

HLI Drawing No. 7974
Electrical Schematic: 8023
Technical Manual TM7974-MI-00

Part Description HLI Part No. Quantity per Unit

Backplate

8030-01 1

Control Box Assembly

8121-G501 1
Panel, Back 8123-01 1
Switch (power-on switch), MIL-S-3950 5560-G501 1
Switch, Toggle, MIL-S-3950 5560-01 1
Switchplate 5560-02 1
Board, Terminal 1031-G508 1
Transformer 4863-01 1
Fuse ?? 1
Fitting, Conduit, Coated 2426-3361 1
Lamp, Red (alarm lamp) 8125-01 1
Bulb, Lamp, Red 8125-05 1
Lamp, White (power-on lamp) 8125-02 1
Bulb, Lamp, White 8125-06 1
Circuit Board Assembly 4855-G502 1

Membrane/Filter Assembly

8018-G501 1
Filter Assembly, Particulate 8192-G501 1
Element, Filter E7-12 1
Auto Drain Assembly AD5417 1
O-Ring, Cartridge to Head M83248/2-112 1
O-Ring, Cartridge to Bowl Face Seal M83248/2-011 1
O-Ring, Housing M83248/2-150 1
Filter Assembly, Coalescing 8193-G501 1
Element, Filter 8193-02 1
Auto Drain Assembly AD5417 1
O-Ring, Cartridge to Head M83248/2-112 1
O-Ring, Cartridge to Bowl Face Seal M83248/2-011 1
O-Ring, Housing M83248/2-150 1
Membrane Assembly 8194-G501 1
Housing, Membrane TD220NB 1
Membrane Cartridge (element) 8194-02 1
O-Ring, Cartridge to Head M83248/2-112 1
O-Ring, Cartridge to Bowl Face Seal M83248/2-011 1
O-Ring, Housing M83248/2-150 1
Connector Kit, Modular, with O-Ring CK200 2

Humidity Sensor Assembly

7212-G501 1
Body, Sensor 7237-01 1
Sensor, Humidity 2140-11 1
Adapter 6927-01 1
O-Ring M83248/2-118 1
Nut, Lock 6932-01 1
Lead, Sensor Electrical, with conduit ?? 1

Miscellaneous

Valve, 3-Way 8031-01 1
Valve Assembly, Check 4730-G501 1
Brazement, Union 8033-G501 2
Tube, Tee to Tee (Bypass) 8034-01 1
Tube, Tee to Filter 8034-02 1
Tube, Membrane to Humidity Sensor 8034-03 1
Tube, Check Valve to Tee 8034-07 1
Tube, Particulate Filter Drain to Tee 8034-08 1
Tube, Coalescing Filter Drain to Tee 8034-09 1
Elbow, Swagelok (Humidity Sensor Inlet & Outlet) 1720-4-2-B 2
Elbow, Swagelok (Manifold Outlet) 1720-4-8-B 1
Fitting, Straight, Swagelok 1770-4-2-B 2
Fitting, Straight, Swagelok 1770-4-4-B 2
Fitting, Straight, Swagelok 1770-4-8-B 1
Tee, Swagelok 4136-G507 1
Tee, Swagelok 7181-B-400-3-4TFT 1
Fitting, Coated Conduit 2426-3321 1
Label Suite 8126-G501 1

Last updated: 10/07/09
Webmaster: Al Friend
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