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RDDTQCN — VALVE,SAFETY RELIEF

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

RDDTQCN: VALVE,SAFETY RELIEF.

The VALVE,SAFETY RELIEF is a the manufacturer industrial component. Key specifications include valve_size: 0.875 INCHES IN, part_name_assigned_by_controlling_agency: RELIEF VALVE. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-720-9844, 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
RDDTQCN
NSN: 4820-01-720-9844
FSC: 4820 — Valves, Nonpowered
CAGE: 54035 — SUN HYDRAULICS CORPORATION (USA)
SPECIFICATIONS
valve_size0.875 INCHES IN
special_featuresDIRECT-ACTING. CAPACITY: 19.8 GALLONS PER MINUTE. ADJUSTMENT RANGE: 100 TO 210 METRIC UNITS OF PRESSURE. MATERIALS: ACRYLONITRILE BUTADIENE RUBBER. WEIGHT: 0.42 POUNDS LBS
part_name_assigned_by_controlling_agencyRELIEF VALVE
NSN4820-01-720-9844
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: RDDTQCN · 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
•
VALVE SIZE: 0.875 INCHES IN
TECHNICAL CHARACTERISTICS
VALVE SIZE0.875 INCHES IN
SPECIAL FEATURESDIRECT-ACTING. CAPACITY: 19.8 GALLONS PER MINUTE. ADJUSTMENT RANGE: 100 TO 210 METRIC UNITS OF PRESSURE. MATERIALS: ACRYLONITRILE BUTADIENE RUBBER. WEIGHT: 0.42 POUNDS LBS
PART NAME ASSIGNED BY CONTROLLING AGENCYRELIEF VALVE
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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is RDDTQCN?
RDDTQCN is a VALVE,SAFETY RELIEF.
What is the NSN for RDDTQCN?
RDDTQCN is cataloged in the U.S. Government catalog under NSN 4820-01-720-9844. 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.