1. Home
  2. Products
  3. Discontinued Products
  4. Constant Pressure Expansion Valves (Hot Gas Bypass)

Constant Pressure Expansion Valves (Hot Gas Bypass)

  •  Constant Pressure Expansion Valves (Hot Gas Bypass)
  •  Constant Pressure Expansion Valves (Hot Gas Bypass)

Description
The PTV series constant pressure expansion valve (hot gas bypass valves) can adjust the compressor capacity so that it matches the evaporator load. Placed in a bypass between the high and low pressure side of a refrigeration system, the PTV imposes a lower limit on the compressor suction pressure by supplying the low pressure side with a replacement capacity in the form of hot or cool gas from the high pressure side.

Features
1. Streamlined angle design for easy installation
2. Accurate adjustment pressure
3. Large capacity and wide operating range

Type & Data of of Constant Pressure Expansion Valve
Model Normal capacity (KW) Connection (in.) Adjusting range (MPa) Medium temperature Max. working pressure Max. testing pressure
(℃) (MPa) (MPa)
R134a R22/ R404A/ Inlet Outlet
R407C R507
PTV6 4.2 6.6 4.2 3/8 SAE 1/2 SAE 0.03→0.6 -25 ~ 100 2.5 3
PTV6W 4.2 6.6 4.2 3/8 ODF 1/2 ODF
PTV(E)8B 7 11 7 3/8 SAE 1/2 SAE
PTV(E)8BW 7 11 7 3/8 ODF 1/2 ODF
PTV(E)10W 14 22.5 16.2 1/2 ODF 5/8 ODF
PTV(E)12W 30 40 25 1/2 ODF 5/8 ODF
PTV(E)8W-PL R410A 12.5KW 3/8 ODF 1/2 ODF 0.5~1.0 4.2 4.5
PTV(E)10W-PL R410A 25.5KW 1/2 ODF 5/8 ODF
Notes: 1) Norminal capacity is based on evaporating temperature +5 ℃, condensing temperature +38 ℃;
2) After the model, "W" indicates solder ODF, "E" indicates external equlization.
3) Factory setting opening pressure is 0.4MPa. Adjust regulation knob at clocking rotation for one round, opening pressure increases 0.1 MPa, inversely, opening pressure decrease 0.1 MPa.
4) Internal equalizer or External equalizer. Model name state "E" is External equalizer.
Inquiry Form