MS17982D
REQUIREMENTS
Dimensions and configuration. See figure 1 and tables I through IV.
Intended use. The thermostatic expansion valves covered by this specification are intended for use with military standard and high-temperature refrigerating and air-conditioning equipment.
Identification of product. The PIN for the valve consists of the MS number plus the dash number from table III or IV as applicable. Example: MS17982-1.
Definitions.
Factory superheat setting: The factory superheat setting of a thermostatic expansion valve is the final adjustment made by the manufacturer during production tests.
Superheat change: The superheat change (superheat gradient) of a thermostatic expansion valve is the difference between no-flow superheat and the superheat required to produce rated capacity or required flow.
Operating characteristics.
Superheat:
Type: Adjustable
Setting:
R-12 parts:
-1 through -5: Factory set at 7 ±2 °F (-14 ±1°C) at bulb reference temperature of 0°F (-18°C).
-6 through -12: Factory set at 10 ±2 °F (-12 ±1°C) at bulb reference temperature of 32°F (0°C).
R-22 parts:
-13 through -17: Factory set at 6 ±2°F (-14 ±1°C) at bulb reference temperature of 32°F (0°C).
-18 through -24: Factory set at 6 ±1°F (-14 ±0.6°C) at bulb reference temperature of 32°F (0°C).
Superheat change of a thermostatic expansion valve shall no be more than 7°F (4°C) throughout the range of temperature in which the evaporator is specified to operate to produce the required capacity at these conditions.
Pressure limit means (R-12 only).
Setting: Parts -1 and -2; factory set at maximum operating pressure of 30 psig (2.07 bar), +7 psi. (0.48 bar), - 0 psi.
Connection ends:
Flare: External, in accordance with SAE-J513. Female: In accordance with ASME-816.22.
7
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business