WENZHOU DONGYI MACHINERY MANUFACTURING CO,.LTD

1.Multimedia Grooves ——— Large flow area, low loss of the valve 2. The double damping design ——— low impact when opening and closing 3. The tilt motion of the valve is low ——— low impact speed, long life 4. Strong buffer spring ——— resistance to oil viscosity 5. Soil Resistance ———— Resistance to liquid and impurities and oil viscosity, high reliability

FOR A WIDE RANGE OF OPERATING CONDITIONS Our factory manufacture to the highest quality standards a full range of pistons and piston rods in stainless or alloy steels, aluminum and cast iron, for a broad range of applications and operating conditions. Experienced technical knowledge of compressor design and operation ensures that the optimum materials, surface treatments and sealing components are selected for each application. FEA analysis is used to ensure the design meets all of the highest engineered standards to guarantee product integrity and quality. Piston and Rod Reconditioning All pistons and rods are inspected to assess how to proceed with reconditioning and to ensure their suitability for re-use. Piston reconditioning may include re-machining of grooves and re-anodizing. Rod reconditioning may include machining, grinding, polishing and the application of specialized spray coatings. Finally, all parts are re-assembled including piston and rider rings.

our company designs and manufactures a full line of compressor packing cases, intermediate partition packing cases and wiper cases for your reciprocating compressor’s piston rod sealing system. Precision machined from cast iron, bronze alloy steel or stainless steel All packing and wiper cases are designed to be easily reconditioned when needed to maximize service life Available in cooled or non-cooled for use in both oil-free and lubricated applications to satisfy the full spectrum of temperatures, pressures and corrosive conditions Designed to meet all environmental concerns and regulations including available vent and purge designed assemblies for fugitive emissions reductions The packing case assembly is critical to the proper operation of the piston rod packing and the sealing of the cylinder. The packing case has several important features that help to maximize your compressor’s performance

Mail material :3Cr13, 45#steel, 38MoAlA,41CrMoAlA