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Diaphragm hydraulic control valve
Product model：800系列
        The 800-type diaphragm basic valve of Juhan Valve is the basis of all hydraulic control valves. It can be used with different control devices to adapt to different occasions from the function. ; With the pressure relief valve, the entire valve becomes a pressure relief valve, and so on. The valve is available in a variety of caliber and flange standards, and is widely used in municipal water supply, building water supply, air conditioning, fire protection, industrial water, power and irrigation facilities.
         
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Product Highlights
        This type of hydraulic control valve has a simple structure, and the movable parts in the valve body only have a diaphragm. When the valve is repaired or maintained, it is not necessary to remove the entire valve from the pipeline, and the diaphragm can be removed and replaced only after removing the upper cover.
        Simple structure, easy repair and maintenance, strong valve flow capacity and small head loss; excellent and reliable sealing performance; can be equipped with various pilot sub-valves to form various functions of hydraulic control valves; the valve body and diaphragm have various options Choose materials, suitable for various media environments. There are multiple interface standards to choose from; valves are not easy to be blocked; valves are 100% tested in the factory.

Product parameters
Part name Material
Valve body Ductile iron / stainless steel
Valve cover Ductile iron / stainless steel
Spring Stainless steel
Diaphragm NBR / VITON
Catheter Stainless steel
 
DN 50 65 8 0 10 0 125 150 200 250 300 350 400 450 500 600
L 230 290 310 350 400 480 600 730 850 850 1100 1100 1250 1450
H 139 159 179 214 214 333 407 476 526 526 624 624 720 835
H1* 85 95 102 112 127 145 172 205 232 262 292 325 360 425
ФK 173 198 226 265 265 351 436 524 606 606 741 741 1002 1308
S 3/8 " 3/8" 3/8" 1/2" 1/2" 1/2" 3/4" 1" 1" 1 " 1 1/2" 1 1/2" 2" 2"
Weight(Kg) 1 4 1 9 23 32 45 68 125 200 260 310 560 620 880 1300

Applications
Installation instructions
(1) Compare the rated parameters required by the equipment with the rated parameters marked on the product to ensure that the product meets the requirements of the application
(2) The installation personnel must be trained and experienced to ensure the successful completion of the installation work;
(3) After the installation is completed, a thorough inspection must be performed to ensure that the installation is correct;
(4) In order to ensure that there are no accidents during the installation, the piping system must be thoroughly cleaned (chemical reagents are used if necessary) before product installation to ensure that the piping system is clean, free of rust and dirt, and must be removed before flushing. Go to all filtering devices to ensure that the pipeline is unobstructed;
(5) It is recommended to install temporary pipelines at the equipment installation pipeline during the initial green cleaning of the system, and install the equipment on the pipeline after the flushing work is completed;.
(6) Note that the device should not be used in places where the medium contains more grease, mineral oil, etc. with higher viscosity or corrosiveness;
(7) Use standard flanges and corresponding bolts for fixing;
(8) When installing, please note that the flow direction of the medium must be consistent with the arrow direction of the valve body;
relevant information
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