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WM87A — VALVE,FLOW CONTROL

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

WM87A: VALVE,FLOW CONTROL.

The VALVE,FLOW CONTROL is a the manufacturer industrial component. Key specifications include body_material: ZINC ALLOY, stem_material: COPPER ALLOY, connection_type: THREADED INTERNAL PIPE, special_features: VALVE PERMITS REVERSE FLOW, flow_control_device: POPPET, nominal_thread_size: 0.375 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-135-2199, 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
WM87A
NSN: 4820-01-135-2199
FSC: 4820 — Valves, Nonpowered
CAGE: 11331 — WILLIAMS CONTROLS INC (USA)
SPECIFICATIONS
body_materialZINC ALLOY
stem_materialCOPPER ALLOY
connection_typeTHREADED INTERNAL PIPE
special_featuresVALVE PERMITS REVERSE FLOW
flow_control_devicePOPPET
nominal_thread_size0.375 INCHES IN
valve_operation_methodAUTOMATIC
end_connection_quantity2
thread_series_designatorNPT
operating_pressure_and_type150.0 POUNDS PER SQUARE INCH (PSI) AIR MAXIMUM REQUIRED LBS
maximum_operating_temp_and_media_for_which_designed200.0 FAHRENHEIT AIR DEGF
NSN4820-01-135-2199
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: WM87A · 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
•
STEM MATERIAL: COPPER ALLOY
•
FLOW CONTROL DEVICE: POPPET
•
MAXIMUM OPERATING TEMP AND MEDIA FOR WHICH DESIGNED: 200.0 FAHRENHEIT AIR DEGF
•
OPERATING PRESSURE AND TYPE: 150.0 POUNDS PER SQUARE INCH (PSI) AIR MAXIMUM REQUIRED LBS
•
CONNECTION TYPE: THREADED INTERNAL PIPE
•
END CONNECTION QUANTITY: 2
•
NOMINAL THREAD SIZE: 0.375 INCHES IN
•
BODY MATERIAL: ZINC ALLOY
TECHNICAL CHARACTERISTICS
STEM MATERIALCOPPER ALLOY
FLOW CONTROL DEVICEPOPPET
MAXIMUM OPERATING TEMP AND MEDIA FOR WHICH DESIGNED200.0 FAHRENHEIT AIR DEGF
OPERATING PRESSURE AND TYPE150.0 POUNDS PER SQUARE INCH (PSI) AIR MAXIMUM REQUIRED LBS
CONNECTION TYPETHREADED INTERNAL PIPE
END CONNECTION QUANTITY2
NOMINAL THREAD SIZE0.375 INCHES IN
BODY MATERIALZINC ALLOY
SPECIAL FEATURESVALVE PERMITS REVERSE FLOW
THREAD SERIES DESIGNATORNPT
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is WM87A?
WM87A is a VALVE,FLOW CONTROL.
What is the NSN for WM87A?
WM87A is cataloged in the U.S. Government catalog under NSN 4820-01-135-2199. 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.