Howell Labs: Home

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

Parts for Model 6750

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.
Technical Manual S9514-E5-MMA-010
Technical Repair Standard S9514-E5-TRS-010
Part Description NSN HLI Part No. Quantity per Unit
Valve Handle 6843-01 1
Cover, Desiccant Chamber 6862-01 2

Main Air System
O-Ring, Main Air Inlet Union M83248/2-114 1
Prefilter Assembly 4921 1
• O-Ring, Thread, Prefilter Inlet Union M83248/2-906 1
• O-Ring, Face, Prefilter Inlet Union M83248/2-114 1
• O-Ring, Thread, Prefilter Plug M83248/2-906 1
• Filter Element 6789-01 1
• Seal Washer, Filter Element 6776-01 2
• Retainer, Filter 6764-01 1
• O-Ring, Thread, Prefilter Drain Fitting 5330-00-167-5172 M83248/2-904 1
• O-Ring, Housing Seal M83248/2-149 2
• O-Ring, Thread, Prefilter Outlet Union M83248/2-906 1
• O-Ring, Face, Prefilter Outlet Union M83248/2-114 1
Check Valve, Prefilter In-Line 6809-01 1
O-Ring, Face, Check Valve Inlet & Outlet Unions M83248/2-114 2
O-Ring, Face, Inlet Manifold Inlet Union M83248/2-114 1
Inlet Manifold 6837-G501 1
• Needle Valve 6838-01 7
• O-Ring, Thread, Union Thread Piece M83248/2-906 4
• O-Ring, Thread, Tubing Connector 5330-00-167-5172 M83248/2-904 5
• O-Ring, Thread, Plug 5330-00-167-5172 M83248/2-904 3
• Purge Silencer 6824-G501 1
• O-Ring, Thread, Purge Silencer 5330-00-167-5172 M83248/2-904 1
O-Ring, Face, Inlet Manifold Outlet Unions M83248/2-114 3
O-Ring, Face, Desiccant Chamber Inlet Unions M83248/2-114 2
Desiccant Chamber Assembly 6759-G501 2
• Desiccant, Activated Alumina 5243-01 16 lb
• Disc, Desiccant Retainer, Top 6784-G502 2
• Disc, Desiccant Retainer, Bottom 6784-G501 2
• O-Ring, Desiccant Retainer, Top & Bottom M83248/2-342 4
• O-Ring, Chamber Seal M83248/2-343 4
• Backup Ring, Chamber Seal 6759-10 4
O-Ring, Face, Chamber Outlet Unions M83248/2-114 2
O-Ring, Face, Afterfilter Inlet Unions M83248/2-114 2
Afterfilter Manifold 6833-G501 1
• Filter Assembly 6842-G501 2
• O-Ring, Thread, Union Thread Piece M83248/2-906 3
• O-Ring, Thread, Tubing Fitting 5330-00-167-5172 M83248/2-904 2
• Cartridge Check Valve 6840-01 2
O-Ring, Face, Afterfilter Outlet Union M83248/2-114 1
O-Ring, Face, Back Pressure Regulator Inlet Union M83248/2-114 1
Back Pressure Regulator 6808-01 1
O-Ring, Face, Back Pressure Regulator Outlet Union M83248/2-114 1
O-Ring, Face, Sample Manifold Inlet Unions M83248/2-114 2
Sample Manifold 6831-G501 1
• Needle Valve 6838-01 2
• Cartridge Check Valve 6840-01 1
• O-Ring, Thread, Union Thread Piece M83248/2-906 3
O-Ring, Face, Sample Manifold Outlet Union M83248/2-114 1
O-Ring, Face, Sensor Manifold Inlet Union M83248/2-114 1
Sensor Manifold 6829-G501 1
• Needle Valve 6838-01 3
• O-Ring, Thread, Union Thread Piece M83248/2-906 2
• O-Ring, Thread, Plug 5330-00-167-5172 M83248/2-904 3
O-Ring, Face, Sensor Manifold Outlet Union M83248/2-114 1
O-Ring, Face, Main Air Outlet Union M83248/2-210 1

Bypass Air System
O-Ring, Face, Bypass Chamber Inlet & Outlet Unions M83248/2-114 2
Bypass Chamber Assembly 6767-G501 1
• O-Ring, Thread, Bypass Chamber Inlet & Outlet Unions MS83248/2-906 1
• Cartridge, Desiccant 6781-01 1
• O-Ring, Bypass Chamber Seal M83248/2-346 2
• Backup Ring, Bypass Chamber Seal 6767-10 2

Purge Air System
Purge Pressure Regulator 6807-01 1
O-Ring, Thread, Purge Pressure Regulator Inlet & Outlet Unions M83248/2-906 2
O-Ring, Face, Purge Pressure Regulator Inlet & Outlet Unions M83248/2-114 2
Purge Solenoid Valve 6814-G501 1
O-Ring, Thread, Purge Solenoid Valve Inlet & Outlet Unions M83248/2-908 2
O-Ring, Face, Purge Solenoid Valve Inlet & Outlet Unions M83248/2-210 2
External Purge Check Valve 6811-01 1
O-Ring, Thread, External Purge Check Valve Inlet & Outlet Unions M83248/2-906 2
O-Ring, Face, External Purge Check Valve Inlet & Outlet Unions M83248/2-114 2
Heater Assembly 6820-G501 1
• O-Ring, Thread, Heater Inlet & Outlet Unions M83248/2-906 2
• O-Ring, Metal, Heater Thermowell 5330-00-469-6871 3895-01 1
• Heater 6819-G501 1
• O-Ring, Metal, Heater 5330-00-469-6871 3895-01 1
O-Ring, Face, Heater Inlet & Outlet Unions MS9068-114 2
O-Ring, Face, Purge Manifold Inlet Union MS9068-114 2
Purge Manifold Assembly 6835-G501 1
• O-Ring, Thread, Purge Manifold Inlet Union MS9068-904 2
• Needle Valve, High-Temperature 6839-01 1
• Check Valve, High-Temperature 6841-01 2
O-Ring, Face, Purge Manifold Outlet Union MS9068-114 2

Condensate Discharge System
Drain Valve, Prefilter 6858-01 1
• O-Ring, Thread, Prefilter Drain Valve Inlet Fitting M83248/2-906 1
• O-Ring, Face, Prefilter Drain Valve Inlet & Outlet Fittings M83248/2-013 2

Instrumentation
Gauge Panel Assembly 6844-G501 1
• Temperature Controller 6895-G501 1
• Gauge, High-Pressure 6742-01 2
• Gauge, Low-Pressure 6685-01-105-2972 3912-G503 1
• O-Ring, Pressure Gauge M83248/2-004 3
• Valve, Pressure Gauge Calibration 5296-01 3
• O-Ring, Calibration Valve Tubing Fitting M83248/2-004 3
• O-Ring, Calibration Valve/Snubber Interface M83248/2-906 3
• Pressure Snubber, High-Pressure 6815-02 2
• Pressure Snubber, Low-Pressure 6815-01 1
• O-Ring, Pressure Snubber Tubing Fitting M83248/2-004 3
Gauge Protector, Low-Pressure Gauge 6810 1
O-Ring, Thread, Gauge Protector Tubing Fitting 5330-00-167-5172 M83248/2-904 2
O-Ring, Face, Gauge Protector Tubing Fitting 5330-00-166-1081 M83248/2-011 2

Electrical System
Electrical Schematic Diagram 6788 ref
Electrical Point-to-Point Diagram 6861-01 ref
Electrical Enclosure Assembly 6756-G501 1
• Electromagnetic Interference (EMI) Filter 6777-01 1
• Fuse, 10-amp 3966-06 2
• Fuse, 5-amp 5920-01-277-9506 3966-02 1
• Contactor, Heater 6803-01 1
• Relay, Control, 440 VAC 3910-02 1
• Relay, Control, 110 VAC 5945-00-962-0163 3910-01 2
• Transformer 6794-01 1
• Switch, Rotary (power-on) 5930-01-278-3381 4381-G503 1
• Toggle Switch 5930-00-642-9188 3042-02 1
• Buzzer, Audible Alarm 6797-01 1
• Indicator Lamp (white) 6210-01-170-7327 3907-G501 2
• Indicator Lamp (amber) 6210-01-278-4737 3907-G502 2
• Alarm Lamp (red) 6210-01-280-3356 3907-G503 2
• Indicator Lamp (green) 3907-G504 2
• Indicator Lamp (blue) 3907-G505 2
• • Lamp Replacement Bulb 3907-06 20 ref
• Humidity Alarm Controller 6802-G501 1
• Moisture Meter 5639-G501 1
• Lamp-Test Push Button Switch 5930-01-170-5700 3917-02 1
• Switch, Heater Select 6779-01 1
• Timer, Reactivation 6780-G501 1
• Timer, Dehydration 6778-G501 1
• Time Totalizer 6645-01-157-9079 3915-G502 1
• Ferrite Bead 6257-02 1
Humidity Sensor 3905-G504 1
Pressure Switch, Low-Pressure 6827-01 1
Pressure Switch, High-Pressure 6826-01 2
• O-Ring, Thread, Pressure Switch 5330-00-167-5172 M83248/2-904 3
O-Ring, Face, Pressure Switch 5330-00-166-1081 M83248/2-011 3
Last updated: 03/19/2008
Webmaster: Al Friend
© 2002-2008 Howell Laboratories, Inc. All rights reserved.