420WS — VALVE,CHECK

✓ Government record, cited

— · GATE VALVE

PRODUCT OVERVIEW

420WS: VALVE,CHECK.

The VALVE,CHECK is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 922 OVERALL, connection_type: UNTHREADED INTERNAL PIPE ALL ENDS, connection_style: STREAMLINED WITH ONE BRAZING RING (PIPE) ALL ENDS, style_designator: STRAIGHT THRU, mounting_position: HORIZONTAL OR VERTICAL, operating_pressure: 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-116-6691, 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

420WS

NSN: 4820-01-116-6691
FSC: 4820 — Valves, Nonpowered
CAGE: 63686 — THE WALWORTH COMPANY (USA)

SPECIFICATIONS

material	COPPER ALLOY 922 OVERALL
connection_type	UNTHREADED INTERNAL PIPE ALL ENDS
connection_style	STREAMLINED WITH ONE BRAZING RING (PIPE) ALL ENDS
style_designator	STRAIGHT THRU
mounting_position	HORIZONTAL OR VERTICAL
operating_pressure	200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
flow_control_device	DISK
maximum_operating_temp	550.0 FAHRENHEIT FIRST RESPONSE DEGF
valve_operation_method	AUTOMATIC
media_for_which_designed	STEAM FIRST RESPONSE
nominal_pipe_size_accommodated	1.000 INCHES ALL ENDS IN
material_document_and_classification	QQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN	4820-01-116-6691

COMPONENT DIAGRAM

KEY FEATURES

•

FLOW CONTROL DEVICE: DISK

•

NOMINAL PIPE SIZE ACCOMMODATED: 1.000 INCHES ALL ENDS IN

•

CONNECTION STYLE: STREAMLINED WITH ONE BRAZING RING (PIPE) ALL ENDS

•

MOUNTING POSITION: HORIZONTAL OR VERTICAL

•

CONNECTION TYPE: UNTHREADED INTERNAL PIPE ALL ENDS

•

STYLE DESIGNATOR: STRAIGHT THRU

•

MATERIAL DOCUMENT AND CLASSIFICATION: QQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE OVERALL

•

OPERATING PRESSURE: 400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS

TECHNICAL CHARACTERISTICS

FLOW CONTROL DEVICE	DISK
NOMINAL PIPE SIZE ACCOMMODATED	1.000 INCHES ALL ENDS IN
CONNECTION STYLE	STREAMLINED WITH ONE BRAZING RING (PIPE) ALL ENDS
MOUNTING POSITION	HORIZONTAL OR VERTICAL
CONNECTION TYPE	UNTHREADED INTERNAL PIPE ALL ENDS
STYLE DESIGNATOR	STRAIGHT THRU
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OPERATING PRESSURE	400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS
OPERATING PRESSURE	200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
MAXIMUM OPERATING TEMP	550.0 FAHRENHEIT FIRST RESPONSE DEGF

SUBSTITUTES & CROSS-REFERENCES 2

0642 1IN SIL-BRAZEReference document

Same NSN cross-reference

Reference document — Secondary reference

2530-29Reference 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 420WS?

420WS is a VALVE,CHECK.

What parts can replace 420WS?

There are 2 known substitutes for 420WS: 0642 1IN SIL-BRAZE, 2530-29. Substitute compatibility should be verified for your specific system.

What is the NSN for 420WS?

420WS is cataloged in the U.S. Government catalog under NSN 4820-01-116-6691. This indicates validated use in U.S. government and defense supply chains.

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