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C20B-.028 — VALVE,CHECK

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

C20B-.028: VALVE,CHECK.

The VALVE,CHECK is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY BODY, connection_type: THREADED INTERNAL PIPE ALL ENDS, connection_style: PLAIN, OPTIONAL END (PIPE) FIRST END, style_designator: STRAIGHT THRU, thread_direction: RIGHT-HAND FIRST END, mounting_position: HORIZONTAL OR VERTICAL. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-181-5598, 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
C20B-.028
NSN: 4820-01-181-5598
FSC: 4820 — Valves, Nonpowered
CAGE: 29771 — DELTROL CORP (USA)
SPECIFICATIONS
materialCOPPER ALLOY BODY
connection_typeTHREADED INTERNAL PIPE ALL ENDS
connection_stylePLAIN, OPTIONAL END (PIPE) FIRST END
style_designatorSTRAIGHT THRU
thread_directionRIGHT-HAND FIRST END
mounting_positionHORIZONTAL OR VERTICAL
flow_control_deviceBALL
nominal_thread_size0.250 INCHES FIRST END IN
valve_operation_methodAUTOMATIC
thread_series_designatorNPT FIRST END
NSN4820-01-181-5598
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: C20B-.028 · 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: BALL
•
CONNECTION STYLE: PLAIN, OPTIONAL END (PIPE) FIRST END
•
MOUNTING POSITION: HORIZONTAL OR VERTICAL
•
CONNECTION TYPE: THREADED INTERNAL PIPE ALL ENDS
•
STYLE DESIGNATOR: STRAIGHT THRU
•
THREAD DIRECTION: RIGHT-HAND FIRST END
•
NOMINAL THREAD SIZE: 0.250 INCHES FIRST END IN
•
MATERIAL: COPPER ALLOY BODY
TECHNICAL CHARACTERISTICS
FLOW CONTROL DEVICEBALL
CONNECTION STYLEPLAIN, OPTIONAL END (PIPE) FIRST END
MOUNTING POSITIONHORIZONTAL OR VERTICAL
CONNECTION TYPETHREADED INTERNAL PIPE ALL ENDS
STYLE DESIGNATORSTRAIGHT THRU
THREAD DIRECTIONRIGHT-HAND FIRST END
NOMINAL THREAD SIZE0.250 INCHES FIRST END IN
MATERIALCOPPER ALLOY BODY
THREAD SERIES DESIGNATORNPT FIRST END
VALVE OPERATION METHODAUTOMATIC
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
12775-004-00Reference document
Same NSN cross-reference
Reference document — Vendor item drawing 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 C20B-.028?
C20B-.028 is a VALVE,CHECK.
What parts can replace C20B-.028?
There is 1 known substitute for C20B-.028: 12775-004-00. Substitute compatibility should be verified for your specific system.
What is the NSN for C20B-.028?
C20B-.028 is cataloged in the U.S. Government catalog under NSN 4820-01-181-5598. This indicates validated use in U.S. government and defense supply chains.
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