SIMPLE DIFFERENTIAL PRESSURE SWITCH
ATHLD series
*Product Overview
1. For use with fluorinated refrigerants as well as with air and liquid；
(Allowable fluid temperature：-45°C~+120°C)
2. Differential pressure of the pressure control is adjustable.
3. Novel micro-switch ensures reliable switching.
4. It can be used at water system reaching to a constant rate of flow
through the control of the differential pressure between in & out pipes.
5. The differential pressure control can be used as protective devices for
maintaining oil pressure of compressor for air-conditioning purpose.
6. The differential pressure have two patterns：without time setting
differential pressure control (frozen water) and with time setting
differential pressure control (oil protective)
7. Max working pressure is 17 or 33 bar. It is can be used as protective
the oil filter drier.
8. Models with max. bellow pressure 33 bar (see table below) can be
used at oil pressure protection of screw compressor or blocking
protection system of hydraulic inspection programme.
9. Suitable media：refrigerants R134a R22 R407C R404A/R507, water,
air, engine oil with viscosity less than 4E°.
*SPECIFICATIONS
Application：Non-corrosive, non-viscous, non-crystalline air and liquid
Case：Plastic
Measuring Principle：Brass
Connection：
Material－Brass
Standard－1/4" SAE Female thread
7/16"-20 UNF Male thread
Option－1/4" Flare Nut；Φ3.0 x 1.0 capillary tube
Temperature Limit：-45~120°C
