Established in 1993, Guanfa Valve Manufacture Co., Ltd. is specialized China valve train manufacturer and distributor of valves, hoses, tubes and pipes. Our oem valve trains are suitable for acid, alkali, water, steam, seawater, coal gas and natural gas. They are widely used in petroleum, chemical, paper making, fertilizer, brewing and metallurgy. The use of specialized software of Pro/E and CAD has shorted the P&D and trial manufacture cycle, and greatly improved the service life and dependability of products. Our high-quality products have been exported to the North Amercia, UK, USA, Germany, Italy, India, France, Australia, Japan.

Lifters, rocker arms, injector clamps, Citation has the design, production, and assembly capabilities to meet its customers' needs. We can utilize standard processes and sophisticated molding, which produces a near net shape component. The reduced machining time helps the customer meet the project's quality and cost objectives. Citation facilities have the experience, capability and expertise to be the tier one to the OEM to cast and forge, precision finish machine these items. Citation's Engineers are experienced and can assist in the design and development of these components and produce added value to the process. The nitrided layer adheres to the base material at a microscopic level and does not flake or break when the valves bend due to impacts with the pistons The micro hardness is higher than the stainless steel base material, keeping good ductility beneath the hard nitrided layer (micro hardness is 800HV minimum) , Surface finish is smoother than chromed stems--that means less friction between stem and guide Valve seat surface is harder with the nitrided layer--that means they last longer with lead free fuels.

Our valve train kits include new valves, new guides, new springs and new locks all made from the highest quality materials. All valve kits include all the necessary parts for your antique tractor. (Retainers not included)
For strength, weight, fit, and finish KMS retainers can go head-to-head with any leading brand. KMS makes the best retainers at a better price. Blockguard Features:CAD design and CNC milled from 6061 Aluminum , Turns an open deck into a semi- closed deck , Machined coolant passages in key areas promote critical coolant flow, particularly where cylinders join. , Without these coolant passages, other brand block guards may create destructive hotspots around the cylinders ,Fits turbo or NA engines.Machined to be slightly oversized to compensate for the cylinder "walk" flaw common in open-block designs Valve Features:One piece forged stainless steel , Heat treated to obtain hardness and ductility for street performance or racing , Surface finish is smoother than chromed stems--that means less friction between stem and guide , Matches any seat (nodular iron, steel powder metal, hard aluminum-copper, or beryllium copper).

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