FSG 48 Valves

Question 1

What is Federal Supply Group 48?

Accepted Answer

FSG 48 is the Federal Supply Group (formally known as NATO Supply Classification Group NSG 48) in the USA for supply items codified in the category of Valves.

Question 2

What is NATO Supply Classification Group 48?

Accepted Answer

NSG 48 is the NATO Supply Classification Group (also known as Federal Supply Group FSG 48 in the USA) for supply items codified in the category of Valves.

Question 3

Which Federal Supply Classes are in FSG 48?

Accepted Answer

FSG 48 contains the following Federal Supply Classes (FSC) (formally known as NATO Supply Classification Class [NSC]): 4820,4810

Question 4

Which NATO Supply Classification Classes are in NSG 48?

Accepted Answer

NSG 48 contains the following NATO Supply Classification Classes (NSC) (also known as Federal Supply Class [FSC] in the USA): 4820,4810

Question 5

When did the transition from Federal Supply Groups (FSG) to NATO Supply Groups (NSG) occur?

Accepted Answer

The transition from Federal Supply Groups (FSG) to NATO Supply Groups (NSG) occurred on January 1, 1997. This change was implemented to align the classification and coding systems used by NATO member countries for military supplies and equipment. Federal Supply Groups (FSG) are now obsolete.

Question 6

What is a Float Valve?

Accepted Answer

A Float Valve (VALVE,FLOAT) is a valve designed to utilize a valve float which controls the opening or closing of the valve as the valve float is lowered or raised by the level of the fluid being controlled. Excludes VALVE, FLOAT, WATER CLOSET TANK.

Question 7

What is a Gate Valve?

Accepted Answer

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.

Question 8

What is an Angle Valve?

Accepted Answer

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.

Question 9

What is a Cross Valve?

Accepted Answer

A Cross Valve (VALVE,CROSS) is a valve with two connections on the run and a third and sometimes fourth connection at 90 degree (1.5708 radians) angle(s) to the run. The flow is controlled by the action of a stem which lifts a disk perpendicularly off of the center axis of its seat.

Question 10

What is a Globe Valve?

Accepted Answer

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.

Question 11

What is a Stop-Check Valve?

Accepted Answer

A Stop-Check Valve (VALVE,STOP-CHECK) is 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 &#40;manifold&#41; design. See also VALVE &#40;1&#41;, LIFT-CHECK and VALVE &#40;1&#41;, STOP-LIFT-CHECK.

Question 12

What is a Check Valve?

Accepted Answer

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 &#40;manifold&#41; design.

Question 13

What is a Safety Relief Valve?

Accepted Answer

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.

Question 14

What is a Butterfly Valve?

Accepted Answer

A Butterfly Valve (VALVE,BUTTERFLY) is a valve that controls flow by a circular disk, or a pair of semicircular disks, attached to a common spindle or lever turning on a diametral axis.

Question 15

What is a Plug Valve?

Accepted Answer

A Plug Valve (VALVE,PLUG) is a valve designed to control the flow of a fluid by the rotation of a ported plug or plug sector within a suitable ported seat. The plug requires lubrication for ease of operation or contains a bonded composition seal(s). See also VALVE, SEATLESS and COCK, PLUG.

Question 16

What is a Temperature Regulating Valve?

Accepted Answer

A Temperature Regulating Valve (VALVE,REGULATING,TEMPERATURE) is a self-acting valve designed for controlling, by means of a thermostatic element, the flow of liquids or gases therethrough. The thermostatic element is located in liquid or gas whose temperature is controlled by the heat of the liquid or gas flowing through the valve. See also VALVE, RELIEF, PRESSURE AND TEMPERATURE.

Question 17

What is an Expansion Valve?

Accepted Answer

An Expansion Valve (VALVE,EXPANSION) is a self-acting valve specifically designed for use in refrigeration systems for continual control of rate of flow of refrigerant. It may be actuated by a thermostatic element or self-actuated.

Question 18

What is a Pneumatic Tank Valve?

Accepted Answer

A Pneumatic Tank Valve (VALVE,PNEUMATIC TANK) is a valve, designed for attachment to pressure tanks and/or mechanical equipment for the purpose of permitting an increase, decrease, and the gaging of pressure (similar to tire valves) within a confining chamber carrying compressed air, gases or oil.

Question 19

What is a Valve Float?

Accepted Answer

A Valve Float (FLOAT,VALVE) is a floatation device used to actuate an inlet or outlet valve. It may be airtight and hollow, or of solid construction. Excludes floats designed for carburetors.

Question 20

What is an Exhaust Control Valve?

Accepted Answer

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.

Question 21

What is a Vacuum Breaking Valve?

Accepted Answer

A Vacuum Breaking Valve (VALVE,VACUUM BREAKING) is an item designed to automatically relieve vacuum, by the intake of air, when the internal pressure falls below atmospheric pressure. See also VALVE, VACUUM REGULATING.

Question 22

What is an Automatic Tempering Valve?

Accepted Answer

An Automatic Tempering Valve (VALVE,AUTOMATIC TEMPERING) is a self-acting valve with a thermostatic element inside the body. It is specifically designed to mix fluids of different temperatures, such as hot and cold water or steam and water, and to discharge at a predetermined temperature. See also VALVE, REGULATING, TEMPERATURE.

Question 23

What is a Gaseous Products Pressure Equalizing Valve?

Accepted Answer

A Gaseous Products Pressure Equalizing Valve (VALVE,PRESSURE EQUALIZING,GASEOUS PRODUCTS) is a valve consisting of a single deadweight loaded disk, or two deadweight loaded disks each with a seperate seat. It is specifically designed for the relief of small pressure and vacuum conditions within a tank or other container to or from the atmosphere. The center of a single deadweight loaded disk may contain a spring loaded disk forming an additional seat or aperture. It may be spring loaded and/or equipped with a manual unloader on either the pressure or vacuum side. Exclude VALVE, VACUUM BREAKING.

Question 24

What is a Seatless Valve?

Accepted Answer

A Seatless Valve (VALVE,SEATLESS) is a valve that controls flow by a cylindrical piston sliding vertically through packing rings separated by a metal cage having ports through which flow may proceed when the valve is open. Rotation of the threaded stem is used to regulate the position of the piston. See also VALVE, PLUG and VALVE, WEIGHTED CONTROL, PISTON.

Question 25

What is a Stop Diaphragm Valve?

Accepted Answer

A Stop Diaphragm Valve (VALVE,DIAPHRAGM,STOP) is a valve designed specifically so the diaphragm seals the flow stream from the valve operating mechanism. The flow is controlled by the lifting of the diaphragm from or compressing it against an integral seat. For packless diaphragm valves which utilize a diaphragm as packing and a disk to control the flow, see VALVE, Y.

Question 26

What is a Foot Valve?

Accepted Answer

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.

Question 27

What is a Pressure Regulating Valve Parts Kit?

Accepted Answer

A Pressure Regulating Valve Parts Kit (PARTS KIT,PRESSURE REGULATING VALVE) is a parts kit used for a VALVE, PRESSURE REGULATING. It may contain such items as a diaphragm, diaphragm spring, valve spring, valve seat, valve seat gasket, needle valve, relief ball, relief spring, dome gasket, and the like.

Question 28

What is a Drain Cock?

Accepted Answer

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.

Question 29

What is a Poppet Drain Cock?

Accepted Answer

A Poppet Drain Cock (COCK,POPPET DRAIN) is an item designed to drain fluids from fuel systems, tanks, filters, or similar items. It has a mounting end, a free flowing end, and a quick-acting nonmetallic sealed closure, usually spring loaded, that holds it in an "off" position. It requires no lubrication other than from the fluid being drained.

Question 30

What is a Screw Stem Shutoff Cock?

Accepted Answer

A Screw Stem Shutoff Cock (COCK,SHUTOFF,SCREW STEM) is a compact two-way type of valve mechanism having a one piece body and seat and a one piece stem and disk. It has no bonnet, and is not used for fine control of flow. It is used extensively in the automotive field.

Question 31

What is a Plug Cock?

Accepted Answer

A Plug Cock (COCK,PLUG) is an item that controls the flow of a fluid by rotation of a ported plug within a suitable ported seat. It must not have any lubrication other than from the fluid controlled, nor contain any nonmetallic seal between plug and seat. See also VALVE, SEATLESS and VALVE, PLUG.

Question 32

What is a Y Valve?

Accepted Answer

A Y Valve (VALVE,Y) is a valve with one inlet and one outlet connection that provides unobstructed fluid flow. The flow is controlled by the action of a stem which lifts disk perpendicularly off center axis of its seat. The stem is at angle of less than 90 degrees (1.5708 radians) to parallel inlet and outlet flow. It may utilize a diaphragm as packing. Excludes VALVE, STOP-CHECK.

Question 33

What is a Piston Weighted Control Valve?

Accepted Answer

A Piston Weighted Control Valve (VALVE,WEIGHTED CONTROL,PISTON) is a valve consisting of a ported, dead weighted, hollow piston which moves vertically across the inlet passage within the valve body. Changes in the pressure controlled position of the piston vary the effective area of the ports exposed to the inlet flow in such a manner as to maintain a constant outlet line pressure. It has no seats or disk. For dead weight loaded pressure regulating valve of seat and disk construction, see also VALVE, REGULATING, FLUID PRESSURE.

Question 34

What is a Pressure And Temperature Relief Valve?

Accepted Answer

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.

Question 35

What is a Fire Check Valve?

Accepted Answer

A Fire Check Valve (VALVE,FIRE CHECK) is a valve which works on a thermostatic principle to stop and extinguish backfire in gas-air pipelines by utilizing the heat generated by the fire to actuate the mechanism which closes the valve. It also contains a swing check on the inlet connection which closes immediately upon shock caused by backfire, shutting off the gas-air mixture. It is designed for installation in a pipeline to feed gas-air mixtures to burners and the like.

Question 36

What is a Restrictor Check Valve?

Accepted Answer

A Restrictor Check Valve (VALVE,RESTRICTOR CHECK) is a valve having an orifice in the poppet, disk, or the like, to permit restricted fluid flow when the valve is seated. It does not have a stem or provisions for pressure adjustments, and is similar to a VALVE, CHECK with the exception of the orifice which permits fluid flow in more than one direction.

Question 37

What is a Shuttle Valve?

Accepted Answer

A Shuttle Valve (VALVE,SHUTTLE) is a valve having one outlet and two inlets that are usually opposite each other. It has a fluid pressure operated pistonlike item, called a shuttle, that controls either inlet. It is commonly used to provide an emergency passage for fluid in an aircraft hydraulic or pneumatic system in case of loss of pressure in the normal service lines.

Question 38

What is a Hydraulic System Fuse?

Accepted Answer

A Hydraulic System Fuse (FUSE,HYDRAULIC SYSTEM) is a valve-like safety device used on hydraulic lines to prevent loss of hydraulic fluid from the system when the lines are ruptured or fail for any reason.

Question 39

What is a Ball Valve?

Accepted Answer

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.

Question 40

What is a Valve Seat?

Accepted Answer

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.

Question 41

What is a Valve Core?

Accepted Answer

A Valve Core is a cylindrical, spring loaded self-sealing unit designed to be (1) fitted into the valve stem of a pneumatic tire or inner tube or other inflatable item to retain inflation or (2) fitted into hydraulic, pneumatic or oxygen equipment and the like to permit pressure charging. Excludes VALVE CORE, HAND PUMP, DRAINAGE AND SUCTION APPARATUS.

Question 42

What is a Vacuum Regulating Valve?

Accepted Answer

A Vacuum Regulating Valve (VALVE,VACUUM REGULATING) is a device designed to regulate vacuum within the desired operating limits. See also VALVE, VACUUM BREAKING.

Question 43

What is a Pneumatic Inflator Valve?

Accepted Answer

A Pneumatic Inflator Valve (VALVE,PNEUMATIC INFLATOR) is a valve designed to control the inflation of life preservers, life rafts, watercraft and the like. The inlet end may be designed for oral inflation, to mate with an inflation adaptor or to connect to a compressed gas cylinder. The outlet end may be designed to connect the valve to a pneumatic chamber valve stem or to mount directly to the pneumatic chamber.

Question 44

What is a Fluid Pressure Regulating Valve?

Accepted Answer

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.

Question 45

What is a Lift-Check Valve?

Accepted Answer

A Lift-Check Valve (VALVE,LIFT-CHECK) is a valve with a stem that may be mechanically actuated to two different positions by rotary or linear motion. In the first 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. In the second position, the valve disk is lifted from the seat to allow a flow of fluid in either direction through the valve. The valve disk may be spring loaded. See also VALVE, STOP-CHECK and VALVE, STOP-LIFT-CHECK.

Question 46

What is a Stop-Lift-Check Valve?

Accepted Answer

A Stop-Lift-Check Valve (VALVE,STOP-LIFT-CHECK) is a valve with a stem that may be mechanically actuated to three 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. In the third position, the valve disk is lifted from the seat to allow a flow of fluid in either direction through the valve. The valve disk may be spring loaded. See also VALVE, LIFT-CHECK and VALVE, STOP-CHECK.

Question 47

What is a Rupturable Disk?

Accepted Answer

A Rupturable Disk (DISK,RUPTURABLE) is a thin, circular, metallic or nonmetallic item with a flat or prebulged cross-sectional shape, designed to rupture at a predetermined pressure to prevent damage to hydraulic or pneumatic systems, or the like. It may include multiple pieces, such as a retainer ring, disk and vacuum support. It can be used independently or as a component part of a HEAD, SAFETY, PRESSURE RELIEF. For items furnished with a holder, see HEAD AND DISK, SAFETY, PRESSURE RELIEF. For items without a rupture pressure rating, see DISK, SOLID, PLAIN. Excludes DIAPHRAGM, VALVE, FLAT; DIAPHRAGM, VALVE, SPECIAL SHAPED; DISK, VALVE; and INSULATOR, DISK.

Question 48

What is a Pressure Relief Safety Head?

Accepted Answer

A Pressure Relief Safety Head (HEAD,SAFETY,PRESSURE RELIEF) is an item of varying shape and size consisting of a metallic body which incloses a nonreusable metallic or nonmetallic disk(s), which is designed and calibrated to burst at a given pressure. It may be used independently, or in conjunction with relief valves to relieve overpressure, and to protect relief valve(s) from corrosive conditions. Excludes VALVE, SAFETY RELIEF and PLUG, FUSIBLE.  For items furnished with a disk, see HEAD AND DISK, SAFETY, PRESSURE RELIER.

Question 49

What is a Needle Valve Stem?

Accepted Answer

A Needle Valve Stem (STEM,NEEDLE VALVE) is a metallic, needle shaped item having a one-piece stem threaded for securing to, or positioning into, a mating part. The point may be of various angles or shapes, such as conical or tapered, to correspond with the mating seat. The item is designed for the fine control flow or restriction of liquids or gases in a given system. It may be provided with a knurled head for rotation by thumbs and fingers, or be driven with either a wrench, handle, or inserted driver. Excludes VALVE, FUEL-AIR MIXTURE CONTROL, AUTOMATIC.

Question 50

What is a Tee Valve?

Accepted Answer

A Tee Valve (VALVE,TEE) is a valve with three connections positioned parallel and/or 90 degrees (1.5708 radians) from each other and are not on a run. The flow is controlled by the action of a stem which lifts a disk perpendicularly off the center axis of its seat.

Question 51

What is a Fluid Valve Stem?

Accepted Answer

A Fluid Valve Stem (STEM,FLUID VALVE) is an item usually metallic, threaded or unthreaded, used for securing to or positioning into a mating part. It is designed to be used in a globe, relief, regulator valve and the like as a means of controlling the flow of liquids or gases in a given system. One end may have an integral disk or be designed to accommodate a metallic or nonmetallic disk. The other end is designed for a handwheel, lever, spring, diaphragm and the like for nonpowered operation or to accommodate a gear, solenoid, air motor and the like for powered operation. The handwheel and/or disk may be furnished with the item. Excludes STEM, FAUCET; and STEM, NEEDLE VALVE.

Question 52

What is a Ported Valve Ball?

Accepted Answer

A Ported Valve Ball (BALL,VALVE,PORTED) is a spherical shaped device with two or more ports used to prevent or regulate the flow of fluids in a valve, nozzle, or the like. It may include an integral valve stem. For valve balls that do not include ports see BALL, CHECK. Excludes PLUG, ROTARY, VALVE.

Question 53

What is a Valve Stem Guide?

Accepted Answer

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.

Question 54

What is a Calibrated Flow Valve?

Accepted Answer

A Calibrated Flow Valve (VALVE,CALIBRATED FLOW) is a valve specifically designed to automatically maintain a predetermined discharge flow rate which may be adjustable within a specific range. It is designed to be used with various fluids and may be preset and/or adjustable. It may be in-line or cartridge (manifold) design. Excludes VALVE, REGULATING, FEED WATER; VALVE, REGULATING, FLUID PRESSURE; VALVE, REGULATING, FUEL OIL; VALVE, REGULATING, OIL PRESSURE, AUTOMATIC PILOT; VAVLE, REGULATING, TEMPERATURE; VALVE, ANGLE; and VALVE, GLOBE.

Question 55

What is a Diaphragm Replacement Parts Kit?

Accepted Answer

A Diaphragm Replacement Parts Kit (PARTS KIT,DIAPHRAGM REPLACEMENT) is a parts kit used to replace diaphram(s) in a brake chamber, clutch cylinder, valve, and the like.

Question 56

What is a Valve Disk?

Accepted Answer

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.

Question 57

What is a Valve Cap?

Accepted Answer

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.

Question 58

What is a Valve Head?

Accepted Answer

A Valve Head (HEAD,VALVE) is an item designed to mate with a hydraulic or pneumatic valve body. It must have inlet and/or outlet port(s). For items without ports see CAP (1), VALVE.

Question 59

What is a System Pressure Regulating Valve?

Accepted Answer

A System Pressure Regulating Valve (VALVE,REGULATING,SYSTEM PRESSURE) is a value designed to automatically maintain within close limits a predetermined pressure within a closed system regardless of the higher fluctuating or constant inlet pressure. The excess pressure is by-passed to the accumulator or reservoir in lieu of passing through the entire system. It is designed primarily for use in refrigeration and air conditioning systems. Excludes VALVE, REGULATING, FLUID PRESSURE and VALVE, CALIBRATED FLOW.

Question 60

What is a Valve Disk Retainer?

Accepted Answer

A Valve Disk Retainer (RETAINER,DISK,VALVE) is an item of various shapes and cross-sections, that may be flanged and that is designed to fit over a valve disk, allowing proper position of disk-to-valve seat within a valve body.

Question 61

What is a Saddle Valve?

Accepted Answer

A Saddle Valve (VALVE,SADDLE) is a valve with an outlet end connection, straight thru or at an angle. The flow of liquid or gases may be controlled by the action of stem which lifts the disks perpendicularly off the center axis of its seat or by rotation of a suitable ported seat. This valve has a connection facility which is saddled over a line and bolted, may be line drilled or line self piercing.

Question 62

What is a Vent Valve?

Accepted Answer

A Vent Valve (VALVE,VENT) is a valve designed to relieve internal pressure from gear housings, automotive axles, differentials, transmissions and the like. May or may not be threaded on one end. For items with relief pressure ratings see VALVE (1), SAFETY RELIEF.

Question 63

What is a Valve Body?

Accepted Answer

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

Question 64

What is a Valve Piston?

Accepted Answer

A Valve Piston (PISTON,VALVE) is a cylindrical item of various configurations which reciprocates in a valve body, assisting in the movement of the disk to open or close a valve. May include additional components such as ring(s), collar(s), spring(s) and the like. Excludes DISK, VALVE.

Valves

Federal Supply Group (FSG): 48

NATO Supply Classification Group (NSG): 48

NSN Format for Valves

Additional Information for Valves

Types of Valves

Quality and Standards

Applications

Choosing the Right Valves

Valves, Nonpowered

Valves, Powered

Frequently Asked Questions (FAQ) for Federal Supply Group 48

Top 20 Supply Items Included in Federal Supply Group 48

Stock Items for FSG 48 Page 71 of 1178