PartsTable
Technical Data Sheet

5-R285A-166AA-1AM/920H172 — VALVE,BUTTERFLY

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

5-R285A-166AA-1AM/920H172: VALVE,BUTTERFLY.

The VALVE,BUTTERFLY is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR PACKING, valve_size: 5.000 INCHES IN, special_features: RESILIENT LINER, style_designator: STRAIGHT THRU, operating_pressure: 285.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS, maximum_operating_temp: 250.0 FAHRENHEIT SINGLE RESPONSE DEGF. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-312-5037, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
5-R285A-166AA-1AM/920H172
NSN: 4820-01-312-5037
FSC: 4820 — Valves, Nonpowered
CAGE: 1NB39 — DOVER RESOURCES, INC. DIV NORRISEAL (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR PACKING
valve_size5.000 INCHES IN
special_featuresRESILIENT LINER
style_designatorSTRAIGHT THRU
operating_pressure285.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
maximum_operating_temp250.0 FAHRENHEIT SINGLE RESPONSE DEGF
valve_operation_methodMANUAL
furnished_items_and_quantity1 HANDLE
material_document_and_classificationASTM A395 ALLOY 60-40-18 ASSN STD SINGLE MATERIAL RESPONSE BODY
NSN4820-01-312-5037
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 5-R285A-166AA-1AM/920H172 · OEM ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
FURNISHED ITEMS AND QUANTITY: 1 HANDLE
•
STYLE DESIGNATOR: STRAIGHT THRU
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A395 ALLOY 60-40-18 ASSN STD SINGLE MATERIAL RESPONSE BODY
•
OPERATING PRESSURE: 285.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
VALVE SIZE: 5.000 INCHES IN
•
MAXIMUM OPERATING TEMP: 250.0 FAHRENHEIT SINGLE RESPONSE DEGF
TECHNICAL CHARACTERISTICS
FURNISHED ITEMS AND QUANTITY1 HANDLE
STYLE DESIGNATORSTRAIGHT THRU
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A395 ALLOY 60-40-18 ASSN STD SINGLE MATERIAL RESPONSE BODY
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-288 COMP A OR E FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
OPERATING PRESSURE285.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
VALVE SIZE5.000 INCHES IN
MAXIMUM OPERATING TEMP250.0 FAHRENHEIT SINGLE RESPONSE DEGF
SPECIAL FEATURESRESILIENT LINER
MATERIALNICKEL ALLOY FLOW CONTROL DEVICE
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR PACKING
OTHER ITEMS IN FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097 4820-00-001-0010 4820-00-001-0020 4820-00-001-0021 4820-00-001-0032 4820-00-001-0037 4820-00-001-0042 4820-00-001-1230
SUBSTITUTES & CROSS-REFERENCES 2
5IN-R285A-166AA-1AM/920H172Reference document
Same NSN cross-reference
Reference document — Secondary reference
R285A-166AA-1AM/920H172Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5-R285A-166AA-1AM/920H172?
5-R285A-166AA-1AM/920H172 is a VALVE,BUTTERFLY.
What parts can replace 5-R285A-166AA-1AM/920H172?
There are 2 known substitutes for 5-R285A-166AA-1AM/920H172: 5IN-R285A-166AA-1AM/920H172, R285A-166AA-1AM/920H172. Substitute compatibility should be verified for your specific system.
What is the NSN for 5-R285A-166AA-1AM/920H172?
5-R285A-166AA-1AM/920H172 is cataloged in the U.S. Government catalog under NSN 4820-01-312-5037. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.