PTV Series constant pressure expansion valve is used to adjust the refrigerating output of a compressor and make it match with the load of evaporator. PTV valve is mountable on the by-pass line of high-pressure side or low-pressure side of the refrigeration system. PTV valve transported the hot air of high-pressure side to low-pressure side through by-pass line to substitute partial load. Thereby the compressor's aspirating pressure will not be as low as the minimum limiting value.
Characteristics
1. Small and exquisite angle design makes easy mounting;
2. Nice and convenient pressure regulation;
3. A wide range of operation;
4. It is useful for various refrigeration agents CFC, HCFC and HFC;
|
Model |
Normal capacity
(KW |
|
|
Connection
(in.) |
|
Adjusting
range (MPa) |
Medium
temperature
ºC |
Max. working
pressure
(MPa) |
Max. testing
pressure
(MPa) |
|
|
R134a |
R22/R407C |
R404A/R507 |
Inlet |
Outlet |
0.03→0.6 |
-50→50 |
2.5 |
3 |
|
PTV8 |
7 |
11 |
7 |
3/8 SAE |
1/2SAE |
0.03→0.6 |
-50→150 |
2.5 |
3 |
|
PTV8W |
7 |
11 |
7 |
3/8 ODF |
1/2ODF |
0.03→0.6 |
-50→150 |
2.5 |
3 |
|
PTV10W |
14 |
22.5 |
16.2 |
1/2 ODF |
5/8ODF |
0.03→0.6 |
-50→150 |
2.5 |
3 |
|
PTV12W |
30 |
40 |
25 |
1/2 ODF |
5/8ODF |
0.03→0.6 |
-50→150 |
2.5 |
3 |
|
|
|
|
|
|
|
|
|
|
|
Shanghai Fengshen Refrigeration Controls Co., Ltd., pecializes in the development and manufacturing of automatic controller, which matches refrigerator, air conditioner, boiler, air compressor, and fire control, etc. In use. Our products include: Solenoid valve (uni-directional and bi-directional), discharge solenoid valve, thermostatic expansion valve (uni-directional and bi-directional), temperature responsive expansion valve, liquid injection valve, pressure actuated regulating valve, temperature water valve, constant pressure expansion valve, safety valve, pressure control, differential pressure control, temperature control, flow switch and fluid sight glass, etc.
It was founded in June, 2000, and passed the certification of ISO9001: 2000 Quality Management System in 2001, of 3C in 2003, and of CE in 2004. In 2006, it passed the testing of RoHS. It has a batch of talents in design and research of refrigerating auto device and well-experienced professional technicians, so it has powerful strength in development of new products and the provision of solutions. Under the development and trial of new products, engineers must undergo the testing in simulated condition and durability, which assures and enhances the reliability and accuracy. In addition, it has a powerful service force, which can help the clients solve some technical problems in type selection, use and debugging, etc.
