Piston valve assembly working procedure is commonly: prepare a clean check a shaded check a pack master disc one with the piston of a pulse valve installed with the regulating spring a diaphragm installed a pack cover a quality acceptance a sorting items (such as Note: in the middle of several working procedures appropriate adjustments can be made according to assembly is a habit) 。 Piston vacuum Que its working content and technical requirements in table 4. The regulation of 15, when assembling, mainly cooperate with precision and surface roughness requirements refer to figure 4. 17. In addition, the spring diaphragm pressure reducing valve its action principle and structure similar to piston type pressure reducing valve. Spring is made of rubber diaphragm pressure reducing valve in the film, to replace the diaphragm piston type pressure reducing valve, the pulse valve and piston, its structure is more simple. Diaphragm spring pressure reducing valve assembly program can be modeled on the piston type pressure reducing valve assembly. Program to clean check color check with the main valve piston installed with the pulse valve adjusting spring loaded diaphragm installed on the cover quality acceptance complete finishing work content and fixed valve parts; Production and prepare gasket, the diaphragm; Ready to the tools and materials needed for clean with kerosene or gasoline combination valve piece, scrubbing the valve body, valve cap, cap, protective cap. Cleaning, wipe, and check valve check valve and valve seat, a shaded pulse valve and piston ring and piston, piston cylinder contact printing film, the method can be according to the structure of local assembly check assembly main valve, main valve spring, end cover, make the main valve disc and seat, guide bar set in the guide sleeve. Cover and the body with a gasket seal, tighten bolts, superior end cover plug to use special tools to install piston ring and piston pulse disc spring on the disc guide bar set one seat, together into the valve cover hole, and screw down the seat, to enable pulse valve spring disc. Installed filters, according to the logo on the adjustable screw adjusting spring loaded up and down, make the reds to match the adjustment screw on the valve cap concave flange according to the working condition, the best coating a layer of sealant, aligning. Screw down the bolt strength, sensitivity, sealing experiment was carried out by the regulation, dry the valve and the characteristics of flow and pressure test, paint, listing or steel grade. Fill out the repair and test records, sealing and packaging technology for valve parts, tools, materials conform to the requirements of the technology, in order to put in the position of cleaning valve parts should be no oil, rust, burrs, etc. , valve should comply with the technical requirements for printing film should comply with the technical requirements for assembly is correct, the main valve disc up and down flexible, no jam phenomenon. Should not leak sealing gasket place with correct piston ring, piston, piston cylinder, conform to the requirements of the technology, flexible assembly up and down movements, not seal face seal assembly, right accords with a requirement to adjust screw, flexible adjustment, reliable sealing and equilibrium of diaphragm correct orientation, hole is open. Bolt tightening, meets the requirements should meet the technical requirements specified in the Industrial Valves is dry, paint conforms to the requirement, fill in record, writing is concise, clear, steel grade, the brand should be in prominent place, the packaging is strong
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