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203566940SS — VALVE,SAFETY RELIEF

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

203566940SS: VALVE,SAFETY RELIEF.

The VALVE,SAFETY RELIEF is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYTETRAFLUOROETHYLENE FLOW CONTROL DEVICE, style_designator: ANGLE, operating_pressure: 3800.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS, disk_loading_method: SPRING, flow_control_device: DISK, valve_operation_method: AUTOMATIC. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-306-7011, 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
203566940SS
NSN: 4820-01-306-7011
FSC: 4820 — Valves, Nonpowered
CAGE: 15187 — EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP DIV NAVY PRODUCT TEAM (USA)
SPECIFICATIONS
materialPLASTIC POLYTETRAFLUOROETHYLENE FLOW CONTROL DEVICE
style_designatorANGLE
operating_pressure3800.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
disk_loading_methodSPRING
flow_control_deviceDISK
valve_operation_methodAUTOMATIC
media_for_which_designedAIR SINGLE RESPONSE
opening_pressure_setting2201.0 POUNDS PER SQUARE INCH LBS
adjustable_pressure_range+2201.0 TO 3800.0 POUNDS PER SQUARE INCH LBS
nondefinitive_spec/std_data.50IPS SIZE
material_document_and_classificationQQ-N-281 FED SPEC 1ST MATERIAL RESPONSE AND QQ-N-288 FED SPEC 2ND MATERIAL RESPONSE BODY
NSN4820-01-306-7011
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 203566940SS · 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
•
FLOW CONTROL DEVICE: DISK
•
STYLE DESIGNATOR: ANGLE
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-281 FED SPEC 1ST MATERIAL RESPONSE AND QQ-N-288 FED SPEC 2ND MATERIAL RESPONSE BODY
•
OPERATING PRESSURE: 3800.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
ADJUSTABLE PRESSURE RANGE: +2201.0 TO 3800.0 POUNDS PER SQUARE INCH LBS
•
NONDEFINITIVE SPEC/STD DATA: .50IPS SIZE
•
DISK LOADING METHOD: SPRING
•
MEDIA FOR WHICH DESIGNED: AIR SINGLE RESPONSE
TECHNICAL CHARACTERISTICS
FLOW CONTROL DEVICEDISK
STYLE DESIGNATORANGLE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281 FED SPEC 1ST MATERIAL RESPONSE AND QQ-N-288 FED SPEC 2ND MATERIAL RESPONSE BODY
OPERATING PRESSURE3800.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
ADJUSTABLE PRESSURE RANGE+2201.0 TO 3800.0 POUNDS PER SQUARE INCH LBS
NONDEFINITIVE SPEC/STD DATA.50IPS SIZE
DISK LOADING METHODSPRING
MEDIA FOR WHICH DESIGNEDAIR SINGLE RESPONSE
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE FLOW CONTROL DEVICE
MATERIALNICKEL ALLOY BODY
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 4
D41P-30UU-06Reference document
Same NSN cross-reference
Reference document — Secondary reference
MIL-V-22549Reference document
Same NSN cross-reference
Reference document — Identification reference
D41P-30UU-06H-1/2-1/2Reference document
Same NSN cross-reference
Reference document — Secondary reference
D41P-30UUU-06H-1/2-1/2Reference 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 203566940SS?
203566940SS is a VALVE,SAFETY RELIEF.
What parts can replace 203566940SS?
There are 4 known substitutes for 203566940SS: D41P-30UU-06, MIL-V-22549, D41P-30UU-06H-1/2-1/2 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 203566940SS?
203566940SS is cataloged in the U.S. Government catalog under NSN 4820-01-306-7011. 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.