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DA20E — VALVE,SAFETY RELIEF

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

DA20E: VALVE,SAFETY RELIEF.

The VALVE,SAFETY RELIEF is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY BODY, flange_shape: ROUND WITH HOLES ALL ENDS, connection_type: FLANGE ALL ENDS, style_designator: ANGLE FLANGED ENDS, nominal_thickness: 0.437 INCHES ALL ENDS IN, bolt_hole_quantity: 4 ALL ENDS. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-260-8295, 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
DA20E
NSN: 4820-01-260-8295
FSC: 4820 — Valves, Nonpowered
CAGE: 01343 — ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY (USA)
SPECIFICATIONS
materialCOPPER ALLOY BODY
flange_shapeROUND WITH HOLES ALL ENDS
connection_typeFLANGE ALL ENDS
style_designatorANGLE FLANGED ENDS
nominal_thickness0.437 INCHES ALL ENDS IN
bolt_hole_quantity4 ALL ENDS
disk_loading_methodSPRING
flow_control_deviceDISK
maximum_operating_temp200.0 FAHRENHEIT SINGLE RESPONSE DEGF
valve_operation_methodAUTOMATIC
nominal_outside_diameter4.250 INCHES ALL ENDS IN
opening_pressure_setting285.0 POUNDS PER SQUARE INCH LBS
NSN4820-01-260-8295
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: DA20E · 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
•
FLANGE SHAPE: ROUND WITH HOLES ALL ENDS
•
BOLT CIRCLE NOMINAL DIAMETER: 3.125 INCHES ALL ENDS IN
•
CONNECTION TYPE: FLANGE ALL ENDS
•
STYLE DESIGNATOR: ANGLE FLANGED ENDS
•
BOLT HOLE NOMINAL DIAMETER: 0.562 INCHES ALL ENDS IN
•
MAXIMUM OPERATING TEMP: 200.0 FAHRENHEIT SINGLE RESPONSE DEGF
•
NOMINAL OUTSIDE DIAMETER: 4.250 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS
FLOW CONTROL DEVICEDISK
FLANGE SHAPEROUND WITH HOLES ALL ENDS
BOLT CIRCLE NOMINAL DIAMETER3.125 INCHES ALL ENDS IN
CONNECTION TYPEFLANGE ALL ENDS
STYLE DESIGNATORANGLE FLANGED ENDS
BOLT HOLE NOMINAL DIAMETER0.562 INCHES ALL ENDS IN
MAXIMUM OPERATING TEMP200.0 FAHRENHEIT SINGLE RESPONSE DEGF
NOMINAL OUTSIDE DIAMETER4.250 INCHES ALL ENDS IN
DISK LOADING METHODSPRING
BOLT HOLE QUANTITY4 ALL ENDS
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 1
DA20E CDS-628 IReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 DA20E?
DA20E is a VALVE,SAFETY RELIEF.
What parts can replace DA20E?
There is 1 known substitute for DA20E: DA20E CDS-628 I. Substitute compatibility should be verified for your specific system.
What is the NSN for DA20E?
DA20E is cataloged in the U.S. Government catalog under NSN 4820-01-260-8295. 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.