Pressure balance valve bypass

1. Overview Shanghai Valve Co., Ltd. Tianjin Shield HC800X pressure balance valve bypass is used for an air conditioning system, in order to balance the pressure difference between the backwater valve. Pressure bypass valve can improve the utilization of the system, keeping pressure precision cross set straight, and minimize system noise, and damage to equipment caused by excessive pressure of. HC800X pressure balance valve is superior in that it does not implementing agencies, the pressure difference between the full media itself to achieve functional balance of the system, saving energy and installation space, is an intelligent balancing valve in other places. 2. Design choice points (1) hydraulic engineering applications where the control valve is the result of factory inspection, a variety of logos complete technical documentation to meet the requirements. (2) According to the functional requirements, select the type of valve, according to pipeline medium, temperature, building standards and requirements for owners to determine the valve body and the sealing portion of the material. Commonly used body material cast iron, copper and iron, copper and plastics. Commonly used sealing surface and lining materials are copper alloys, plastics, steel, carbide, rubber. Body material should match the pipe material phase. (3) The valve has a medium 0.6,1.0,1.6,2.5 and nominal pressure 4.0MPa different levels, pipeline transportation, the working pressure should be less than the nominal value of the valve. (4) Engineering hydraulic control valve setting should have enough space for management, operation, installation and maintenance, and shall comply with the requirements of the pipeline valve. (5) when the pipe using flange connection flange connection should be used hydraulic control valve; when the pipeline is connected using the trench, the trench should be connected to the hydraulic control valve. (6) water control valve should be set in the pipeline medium flow in one direction. (7) water control valve main direction of the arrow on the valve must be consistent with the flow of the pipeline system. (8) connected to the hydraulic control valve pipe should not have gas block, vapor lock phenomenon. In the presence of the gas pipeline network segment location should be set up automatic exhaust valve. (9) valve horizontal installation, valve cover, stem should be facing up. When mounted vertically, bonnet, stem should be facing outward. (10) The strength and tightness test should be done before the valve is installed. (11) The strength of the valve and tightness test shall meet the following requirements. A, strength test pressure valve for the nominal 1.5 times; B, the valve tightness test pressure of 1.5 times the nominal pressure; C, the test pressure in the test duration should remain unchanged, and the housing and valve sealing filler surface without leakage; D, valve test duration according to the table. Shanghai Jin Shield HC800X pressure balance valve bypass between the air-conditioning system is a supply / return valve is used to balance the pressure difference. The valve can improve the utilization of the system, keeping pressure precision cross set straight, and minimize system noise, and damage to equipment caused by excessive pressure of. 3. The main connecting dimensions: Nominal Diameter (mm) main installation dimensions (mm) DN L H1 H 20 150 126 520 25 160 126 520 32 180 126 520 40 200 160 610 50 203 160 610 65 216 180 625 80 241 200 642 100 292,270,750,125,330 310,808,150,356,320 8,642,004,953,701,135,250 6,224,301,185,300,698,480 1325 350 7,875,251,385,400,914,580 1445 4509786351445