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NSN: 4310-00-005-2025
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Part Numbers

Item Number Item Description
1625097-1 Vacuum Pump Unit, Reciprocating
13902 Vacuum Pump Unit, Reciprocating

Master Requirement Codes

Code Translation
AAYX Indicates the type of connection between the prime mover and the shaft.
ABEM Consists of plating, dip, and/or coating that cannot be wiped off. plating and/or coating is any chemical and/or metallic additive, electrochemical, or mild mechanical process which protects a body surface.
ACZV The cooling medium used to maintain the required operating temperature of the item.
AMPS The electrical current rating, expressed in amperes.
ACDC Indicates the type of current whether alternating, direct, or both.
AAYA The style designation indicating the configuration that most nearly corresponds to the angular arrangement of the cylinders.
AAYV The number of discharge connections included on the item.
ASAZ Designates the thread diameter, series/type, and number of threads per measurement scale of the discharge connection.
AAYW Indicates the type of discharge connection included on the item.
AAXX Indicates the type of mount utilized to support the item.
AEQC The speed of the drive shaft required to produce the rated capacity of an item, expressed in revolutions per minute.
ABKW The distance measured in a straight line from the bottom to the top of an item.
AENC The number of pumps incorporated in the item.
AAYT The number of intake connections included on the item.
ASWT Designates the thread diameter, series/type, and number of threads per measurement scale of the intake connection.
AAYU Indicates the type of intake connection included on the item.
ABHP The dimension measured along the longitudinal axis with terminated points at the extreme ends of the item.
ABMK An overall measurement taken at right angles to the length of an item, in distinction from thickness.
CXCY The name assigned to the item by the government agency or commercial organization controlling the design of the item.
AKDJ Indicates the type of prime mover included with the unit.
AENG Indicates the type of pumping element included on the item.
AENE The element, compound, or mixture of which the pump body is fabricated, excluding any surface treatment.
AENH The number of cylinders included in the pump.
AENF The specific gas with which the item is designed to be used.
AAYD The number of stages incorporated in the item.
AERP An indication of the system for which the item is designed.
ADLE The ultimate maximum vacuum, expressed in terms of absolute pressure, that may be produced by or applied to an item.
ELEC The total electrical voltage.

13902 Reciprocating Vacuum Pump Unit

Cage 27637

Technical Definition

Vacuum Pump Unit, Reciprocating, also referenced with federal logistics item name code 29902 - An assembled unit consisting of a commonly mounted reciprocating vacuum pump(s), prime mover(s), and the necessary components to provide for a complete operation. it may include a vacuum storage tank(s).

Technical Characteristics

Drive Connection Type (AAYX):
Close coupled
Body Surface Treatment (ABEM):
Any acceptable
Cooling Medium (ACZV):
Current Rating In Amps (AMPS):
Current Type (ACDC):
Cylinder Arrangement Style (AAYA):
Horizontal design
Discharge Connection Quantity (AAYV):
Discharge Connection Thread Size And Series/type Designator (ASAZ):
9/16-18 unf
Discharge Connection Type (AAYW):
Threaded internal
Mounting Type (AAXX):
Operating Speed At Rated Capacity In Rpm (AEQC):
Overall Height (ABKW):
3.125 inches nominal
Pump Quantity (AENC):
Intake Connection Quantity (AAYT):
Intake Connection Thread Size And Series/type Designator (ASWT):
9/16-18 unf
Intake Connection Type (AAYU):
Threaded internal
Overall Length (ABHP):
5.790 inches nominal
Overall Width (ABMK):
3.000 inches nominal
Part Name Assigned By Controlling Agency (CXCY):
Pump assembly
Prime Mover Type (AKDJ):
Electric motor
Pumping Element Type (AENG):
Pump Body Material (AENE):
Any acceptable
Pump Cylinder Quantity (AENH):
Specific Gas For Which Designed (AENF):
Stage Quantity (AAYD):
System Design (AERP):
Vacuum Rating (ADLE):
4.0 millitorr
Voltage In Volts (ELEC):

National Stock Number (NSN)