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 6995

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 Group No. Mk I Mk IA Mk II
Top Drawing No. 6995 6995 7150
Electrical Schematic Diagram 7072 7313 7072
Technical Manual: (all groups) S9514-C7-MMA-010
Part Description HLI Part No.
(NSN)		 Mk I Qty. Mk IA Qty. Mk II Qty.

Inlet Tube Assembly

 7122-G501 1 1 1
O-Ring, Main Air Inlet Union M83248/2-125
(5330-01-184-7576)		 1 1 1

Prefilter Assembly

 7003-G501 1 1 1
Prefilter Element with Gaskets 7139 1 1 1
Seal, Prefilter Housing (Shell Gasket) 7002-04 1 1 1
Top Nut Gasket 7002-03 1 1 1
O-Ring, Face, Pressure Differential Indicator Tubing Fittings M83248/2-008 2 2 2
O-Ring, Thread, Pressure Differential Indicator Tubing Fittings M83248/2-902 2 2 2
O-Ring, Face, Main Air Fittings M83248/2-019 2 2 2
O-Ring, Thread, Main Air Fittings M83248/2-912 2 2 2
Particulate Filter Screen 2653-01 1 1 1
O-Ring, Particulate Filter Screen M83248/2-116 2 2 2
Spring, Particulate Filter Screen 1015-08 1 1 1

Inlet Manifold Assembly

 7051-G501 1
7051-G502 1
7277-G501 1
7277-G502
 1
O-Ring M83248/2-015 1 1
O-Ring M83248/2-013 1 1
• O-Ring M83248/2-015 1
• O-Ring M83248/2-013 1
• Mass Flowmeter 7177-01 1
• Flowmeter Mount 7281-01 1
• O-Ring, Flowmeter Fitting Thread M83248/2-908 2
• O-Ring, Flowmeter Fitting Face M83248/2-019 2

Condensate Discharge System
Trap-Dump Assembly 7045-G501 1 1
7045-G502
 1
• Overhaul Kit, Trap Unit 4400-2/9
(4820-00-12-0079)		 ref ref ref
• O-Ring, Face, Trap Inlet Union M83248/2-015 1 1 1
• O-Ring, Thread, Trap Inlet Union M83248/2-908 1 1 1
• O-Ring, Trap Outlet Union M83248/2-017 1 1 1
• Manual Drain Valve 6380-G501 1 1 1
• O-Ring, Face, Tubing to Manual Drain Valve M83248/2-011
(5330-00-166-1081)		 2 2 2
• O-Ring, Thread, Tubing to Manual Drain Valve M83248/2-904
(5330-00-167-5172)		 2 2 2

Membrane Element Assembly
Membrane Element 7001-G501 3 3 4
O-Ring, Face, Main Air Fitting M83248/2-015 6 6 8
O-Ring, Thread, Main Air Fitting M83248/2-908 6 6 8
O-Ring, Face, Purge Air Inlet M83248/2-011
(5330-00-166-1081)		 3 3 4
O-Ring, Thread, Purge Air Inlet M83248/2-904
(5330-00-167-5172)		 3 3 4

Outlet Manifold Assembly

 7084-G501 1
7084-G503 1
7084-G502
 1
Outlet Manifold Weldment 7093-G501 1 1
7093-G502 1 1
7093-G504 1
7084-G505 1
7084-G506
 1
Overhaul Kit, Ball Valve 7056-03/07 3 ref 3 ref 3 ref
Flowmeter Sight Tube 5923-01 1 1 1
Flowmeter Guide Holder 5924-01 1 1 1
Flowmeter Float Guide 5947-G501 1 1 1
Flowmeter Float 4563
(4820-01-282-2577)		 1 1 1
O-Ring, Flowmeter Body Seal M83248/2-022 1 1 1
O-Ring, Main Air Outlet Union M83248/2-125
(5330-01-184-7576)		 1 1 1
Mass Flowmeter 7177-01 1
Flowmeter Mount 7281-G502 1

Purge Manifold Assembly

 7085-G501 1 1
7085-G502
 1
Purge Orifice Fitting 7083-073 3 3 4

Instrument Panel Assembly

 7038-G501 1
7038-G502   1
7038-G503
 1  
Purge Flowmeter 7058-G501 1 1 1
• Overhaul Kit, Purge Flowmeter 7058-05 ref ref ref
• O-Ring, Face, Purge Flowmeter In/Outlet Fittings M83248/2-013 2 2 2
Calibration Flowmeter 7059-G501 1 1 1
• Overhaul Kit, Calibration Flowmeter 7059-04 ref ref ref
• O-Ring, Face, Calibration Flowmeter In/Outlet Fittings M83248/2-011
(5330-00-166-1081)		 2 2 2
Pressure Gauge 3912-G503
(6685-01-105-2972)		 1 1 1
• O-Ring, Pressure Gauge Fitting M83248/2-008 1 1 1
Calibration Valve, Pressure Gauge 5296-G502 1  
5296-G501 1 1
• O-Ring, Calibration Valve Fittings M83248/2-008 2 2 2
Valve, Manual, Calibration/Calibration Dump 7039-G501 1 1 1
• O-Ring, Manual Valve Fitting M83248/2-904
(5330-00-167-5172)		 1 1 1
Valve, Manual, Purge Selector 7081-G501 1 1 1
• O-Ring, Face, Manual Valve Fitting M83248/2-013 3 3 3
• O-Ring, Thread, Manual Valve Fitting M83248/2-906 3 3 3
Valve, Manual, Sensor Shutoff 7082-G501 1 1 1
O-Ring, Face, Manual Valve Fitting M83248/2-013 2 2 2
O-Ring, Thread, Manual Valve Fitting M83248/2-906 2 2 3
Coupling, Dew Point Sample Connection 5083-G501
(4730-01-387-7234)		 1 1 1
Bulkhead Union, Dew Point Sample Connection 5075-A-90-4 1 1 1
Dust Cover, Dew Point Sample Connection 3965-02
(5935-01-229-8537)		 1 1 1
Humidity Sensor Housing 7040-G501 1 1 1
• O-Ring, Face, Humidity Sensor Housing Tubing Fitting M83248/2-013 2 2 2
• O-Ring, Thread, Humidity Sensor Housing Tubing Fitting M83248/2-906 2 2 2
Purge Pressure Regulator 7044-G501 1 1 1
• Repair Kit for Purge Pressure Regulator 7044-03 ref ref ref
• O-Ring, Face, Purge Pressure Regulator Tubing Fitting M83248/2-013 2 2 2
• O-Ring, Thread, Purge Pressure Regulator Tubing Fitting M83248/2-906 2 2 2
Filter Pressure Differential Indicator 4787-G504
(6685-01-222-8139)		 1 1 1
• O-Ring, Face, Pressure Differential Indicator Fittings M83248/2-011
(5330-00-166-1081)		 2 2 2
• O-Ring, Thread, Pressure Differential Indicator Fittings M83248/2-904
(5330-00-167-5172)		 2 2 2
Humidity Sensor Assembly 3905-G503
(6685-01-386-6547)		 1 1 1
• Humidity Sensor 3905-03
(6685-01-246-0261)		 1 1 1
• O-Ring, Humidity Sensor M83248/2-116 1 1 1
• Cable, Humidity Sensor 3905-06 1 1 1
• Bead, Ferrite, Humidity Sensor 6257-02 1 1 1

Electrical Panel Assembly

 7006-G501 1 1
7006-G503
 1
Lamp-Test Push Button Switch 3917-03
(5930-01-285-6665)		 1 1 1
Alarm Lamp (red) 3907-G503
(6210-01-280-3356)		 1 1 1
Power-On Lamp (white) 3907-G501
(6210-01-170-7327)		 1 1 1
• Lamp Replacement Bulb 3907-06 4 ref 4 ref 4 ref
Toggle Switch 3042-02
(5930-00-642-9188)		 2 2 2
Circuit Board, Humidity Alarm 4994-G502 1 1 1
Transformer 4863 1 1 1
Fuse 3043-12 2 2 2
Flasher 4901
(5945-01-193-0058)		 1 1 1
Potentiometer (humidity alarm controller adjusting knob) 4705-04-02 1 1 1
Potentiometer Dial ?? 1 1 1
Dew Point Meter 5639-G501 1 1
5639-G502 1
Electromagnetic Interference Filter 6777-01 1 1 1
Humidity Alarm Buzzer 6797-01 1 1 1
Resistor RCR42G682JS 1 1 1
Last updated: 03/19/2008
Webmaster: Al Friend
© 2002-2008 Howell Laboratories, Inc. All rights reserved.