What is Federal Supply Class 4820?

FSC 4820 is the Federal Supply Class (formally known as NATO Supply Classification Class NSC 4820) in the USA for supply items codified in the category of Valves, Nonpowered.

What is NATO Supply Classification Class 4820?

NSC 4820 is the NATO Supply Classification Class (also known as Federal Supply Class FSC 4820 in the USA) for supply items codified in the category of Valves, Nonpowered.

Which Federal Supply Group is FSC 4820 in?

FSC 4820 is in Federal Supply Group (FSG) 48 which contains Valves.

Which NATO Supply Classification Group is NSC 4820 in?

NSC 4820is in NATO Supply Classification Group (NSG) 48 which contains Valves.

What is a Gate Valve?

A Gate Valve (VALVE,GATE) is a valve having a flat or tapered disk (gate) which moves transversely to the axis of flow by rotating or sliding movements of the stem to open or close the orifice. It may also contain an oval or rectangular shaped slide which may be manually, motor, or pressure operated through the means of an arm or arm assembly. The body flange may be designed to accommodate tube type connectors. It may or may not contain thermal relief features. Includes valve (gate) specifically designed for the control of fluid systems in aircraft or missiles.

What is an Angle Valve?

An Angle Valve (VALVE,ANGLE) is a valve with one inlet and one outlet connection with outlet flow at an angle to inlet flow. The flow is controlled by the action of a stem which lifts disks perpendicularly off the center axis of its seat. It may be inline or cartridge (manifold) design. Excludes VALVE (1), Y; VALVE, STOP-CHECK; and COCK, SHUTOFF, SCREW STEM.

What is a Globe Valve?

A Globe Valve (VALVE,GLOBE) is a valve with one inlet and one outlet connection with outlet flow parallel to inlet flow. The flow is controlled by the action of a stem which lifts the disk perpendicularly off the center axis of its seat. The stem is at a 90 degree (1.5708 radians) angle to axis of flow. Excludes VALVE, STOP-CHECK; COCK, SHUTOFF, SCREW STEM; and VALVE, SOLENOID.

What is a Check Valve?

A Check Valve (VALVE,CHECK) is a valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.

What is a Safety Relief Valve?

A Safety Relief Valve (VALVE,SAFETY RELIEF) is a valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes VALVE (1), RELIEF, PRESSURE AND TEMPERATURE.

What is an Exhaust Control Valve?

An Exhaust Control Valve (VALVE,EXHAUST CONTROL) is a manually operated valve having one inlet and two outlets. It is designed to control the direction of exhaust gases into either of the outlets, one outlet discharging directly into the atmosphere, the other discharging under water.

What is a Foot Valve?

A Foot Valve (VALVE,FOOT) is a valve used on the free end of a suction line permitting flow in only one direction. It is always equipped with a strainer at the inlet end. See also VALVE, CHECK.

What is a Drain Cock?

A Drain Cock (COCK,DRAIN) is an item with one mounting end and one free flowing end with a metal to metal valve closure. It is designed to drain fluids from radiators, boilers, and similar items.

What is a Pressure And Temperature Relief Valve?

A Pressure And Temperature Relief Valve (VALVE,RELIEF,PRESSURE AND TEMPERATURE) is a valve designed to release under excessive pressure and/or excessive temperature by opening at a predetermined pressure and/or temperature. Thermostatically operated valves close when the pressure is relieved or the temperature is reduced. Fusible plug valves require replacement of the plug. See also VALVE, SAFETY RELIEF and VALVE, REGULATING. TEMPERATURE.

What is a Ball Valve?

A Ball Valve (VALVE,BALL) is a multi-ported, nonlubricated valve designed to provide straight through flow or ability to direct a number of flows or pressure through a single valve. The flow is controlled by the rotation of a ported ball within a suitable ported seat(s). The ball is usually engaged by a stem. It is normally operated in an open or closed position. Excludes VALVE, CHECK.

What is a Valve Seat?

A Valve Seat (SEAT,VALVE) is a replaceable item designed to provide a stationary seating surface for a mating, moveable item such as a valve disk or the like. The body may have a flange of various shapes. For diesel and gasoline reciprocating engines, see INSERT, ENGINE VALVE SEAT.

What is a Fluid Pressure Regulating Valve?

A Fluid Pressure Regulating Valve (VALVE,REGULATING,FLUID PRESSURE) is a valve designed to automatically maintain within close limits a predetermined outlet pressure which may be adjustable within a specified range regardless of the higher fluctuating or constant inlet pressure. It is designed for use with compressed gas(es) and various liquids and may include gauges. It may be inline or cartridge (manifold) design. Excludes REGULATOR, PRESSURE, MEDICAL GAS ADMINISTRATION APPARATUS; REGULATOR, OXYGEN, BAROMETRIC CONTINUOUS FLOW; REGULATOR, OXYGEN DEMAND; REGULATOR, OXYGEN DILUTER DEMAND; and valve(1), fluid pressure regulating, aircraft.

What is a Valve Stem Guide?

A Valve Stem Guide (GUIDE,VALVE STEM) is a replaceable cylindrical item designed to provide wear surface and maintain alignment of a reciprocating valve stem and the like, it may have a flange(s) and/or grooves.

What is a Valve Disk?

A Valve Disk (DISK,VALVE) is an item of various shapes (usually circular, conical, cylindrical, or rectangular) used to prevent or regulate the flow of liquids or gases through the valve. May include a retainer, screw, holder, and the like.

A Valve Cap (CAP,VALVE) is a cap designed to mate with a fluid valve body. It may have an orifice through which a rod, shaft, stem, or an adjusting screw passes. For ported items, see HEAD, VALVE. Excludes CAP, PNEUMATIC VALVE.

What is a Valve Body?

A Valve Body (BODY,VALVE) is an item designed to enclose and support the internalpart(s) of a valve.

What is a Throttle Valve?

A Throttle Valve (VALVE,THROTTLE) is a valve designed with multiple outlets of various sizes that are reduced to control the rate of flow and/or increased to reduce pressure. Excludes VALVE, REGULATING FLUID PRESSURE and VALVE, CALIBRATED FLOW.

What is a Hydraulic System Bleeder Valve?

A Hydraulic System Bleeder Valve (VALVE,BLEEDER,HYDRAULIC SYSTEM) is a metallic, threaded, screw-shaped item used in hydraulic brake cylinders, hydraulic power units, missile launching hydraulic systems, and the like, for the purpose of providing a means of releasing air form and/or flushing a hydraulic system. It may be furnished with or without a dust cap. Excludes spring loaded or automatic type air pressure relief valves, and BOLT, FLUID PASSAGE.

What is a Globe-Check Valve?

A Globe-Check Valve (VALVE,GLOBE-CHECK) is a valve with one inlet and one outlet connection designed for precise, adjustable control of the flow in one direction and free flow in the opposite direction. Precise control is provided by a threaded needle or stem which is lifted perpendicularly off the center axis of its seat. Free flow is provided by an internal by-pass check valve which operates independently of the needle or stem.

What is a Flow Control Valve?

A Flow Control Valve (VALVE,FLOW CONTROL) is an inline or cartridge type item designed to control the flow of fluids within a closed system. Excludes items actuated by a predetermined pressure and/or temperature, items designed for use with breathing gasses, or those designed to vent or calibrate fluids.

What is a Valve Assembly?

A Valve Assembly is an assembly of items consisting of two or more complete valves on a common mounting; mounted on each other; or joined together with fitting(s), hose(s), tube(s), pipe(s), or the like. For items consisting of two or more valves in a common body, See VALVE ASSEMBLY, MANIFOLD.

Valves, Nonpowered - Korea (KR)

Federal Supply Class (FSC): 4820

NATO Supply Classification Class (NSC): 4820

Federal Supply Group (FSG): 48 Valves

NATO Supply Classification Group (NSG): 48 Valves

Items Managed by Korea (KR) - NCB is 37

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NSN Format for Valves, Nonpowered
Codified by Korea

48	20	37	XXX
Group FSG	Class	NCB	Identifier
FSC Federal Supply Class		NIIN
NSN

NATO Supply Class 4820 is a classification within NATO Supply Group 48, which is specifically for valves. More specifically, NATO Supply Class 4820 is for nonpowered valves.

Valves are mechanical devices used to control the flow of fluids (liquids, gases, or slurries) through a system of pipes or tubes. They are essential components in various industries, including manufacturing, oil and gas, water treatment, and many others.

Nonpowered valves, as the name suggests, do not require external power sources to operate. They rely on manual or mechanical means to control the flow of fluids. This can include hand-operated valves, lever-operated valves, or valves that are actuated by mechanical systems such as springs or diaphragms.

NATO Supply Class 4820 includes a wide range of nonpowered valves, such as gate valves, globe valves, check valves, ball valves, butterfly valves, and many others. These valves are designed to meet specific requirements for different applications, including controlling the flow rate, regulating pressure, preventing backflow, or isolating sections of a system.

The classification of valves into NATO Supply Groups and Classes helps standardize the identification and categorization of these essential components for military and defense purposes. It ensures that the right valves can be easily identified, procured, and used in various military operations and equipment.

If you need more specific information about a particular type of nonpowered valve within NATO Supply Class 4820, please let me know, and I'll be happy to assist you further.

FSC 4820 Valves, Nonpowered - Korea (KR)

Includes Automatic Nonpowered Valves; Gate, Globe, Angle, Check, and Relief Valves; Cocks.

Excludes Fire Hydrants (FSC 4210); Sprinkler Heads (FSC 4210); Valves specifically designed for use with fire fighting Equipment (FSC 4210); plumbing equipment, and the like (FSC 4540).

Note-This group may include specially designed valves for use on individual types of equipment or systems. Excluded are such items as tire valves, engine intake and exhaust valves, explosive valves, carburetor valves, water mixing valves, and flush valves.

Frequently Asked Questions(FAQ) for Federal Supply Class 4820

Supply Items Included in Federal Supply Class 4820

Stock Items From Supply Class 4820 Page 1 of 4