4820-00-494-0899, VALVE,STOP-CHECK

5998-00-494-0898 ELECTRONIC COMPONENTS ASSEMBLY

National Stock Number:
4820-00-494-0899

Federal Supply Class:
4820

National Item Identification Number:
004940899

Description:
VALVE,STOP-CHECK

Detail:
A VALVE WITH A BOLT OR STEM THAT MAY BE MECHANICALLY ACTUATED TO TWO DIFFERENT POSITIONS BY ROTARY OR LINEAR MOTION. IN THE FIRST POSITION, THE VALVE DISK IS LOCATED AND LOCKED AGAINST THE SEAT PERMITTING NO FLUID FLOW THROUGH THE VALVE. IN THE SECOND POSITION, ONE SIDE OF THE VALVE DISK IS LOCATED AGAINST THE SEAT PERMITTING MOVEMENT OF THE DISK IN A MANNER THAT WILL ALLOW A FLOW OF FLUID IN ONE DIRECTION THROUGH THE VALVE. THE VALVE DISK MAY BE SPRING LOADED. IT MAY BE INLINE OR CARTRIDGE (MANIFOLD) DESIGN. SEE ALSO VALVE (1), LIFT-CHECK AND VALVE (1), STOP-LIFT-CHECK.

Manufacturer Information:

B12-2084P-02TS	57574	VELAN VALVE CORP.
CS4820-0015DBDTBRQD	16236	DLA LAND AND MARITIME DBA ENGINEERING AND TECHNICAL SUPPORT DIV DOCUMENT STANDARDIZATION DIVISION (VENDOR ITEM DRAWINGS)
MC-025-D 4IN	61661	NEWMANS INC NEW JERSEY DIV
MIL-DTL-22052	81349	MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
MILV22052	81349	MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M

Techincal Specification:

MATERIAL	STEEL BODY
	STEEL FLOW CONTROL DEVICE
	STEEL SEAT
	STEEL CORROSION RESISTING STEM
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM A105, GRADE 2 ASSN STD SINGLE MATERIAL RESPONSE BODY
	MIL-R-17131,MIL-RCOCR-A MIL SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
	MIL-R-17131,MIL-RCOCR-A MIL SPEC SINGLE MATERIAL RESPONSE SEAT
STYLE DESIGNATOR	STRAIGHT THRU
FLOW CONTROL DEVICE	DISK
MEDIA FOR WHICH DESIGNED	STEAM SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE	600.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP	775.0 DEG FAHRENHEIT SINGLE RESPONSE
VALVE OPERATION METHOD	MANUAL
CONNECTION TYPE	BUTT WELD PIPE ALL ENDS
CONNECTION STYLE	BEVELED (PIPE) ALL ENDS
NOMINAL PIPE SIZE ACCOMMODATED	4.000 INCHES ALL ENDS
MOUNTING POSITION	HORIZONTAL
BONNET TYPE	OUTSIDE SCREW-YOKE
BONNET ATTACHMENT METHOD	PRESSURE SEAL, RING TYPE
FEATURES PROVIDED	BONNET PACKING
SPECIAL FEATURES	VALVE SIZE 4 IN.
NONDEFINITIVE SPEC/STD DATA	D COMPOSITION
SPEC/STD CONTROLLING DATA
MANUFACTURERS CODE	81349
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE	MIL-DTL-22052

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