In the lubrication system of Perkins engines, the 140036220 oil pressure relief valve acts as a vigilant guardian, monitoring and adjusting oil pressure to avoid extremes. When pressure rises too high—due to cold starts, system blockages, or mechanical stress—the valve opens to release excess oil, redirecting it back to the oil pan. This prevents damage to delicate components that rely on controlled lubrication, such as crankshaft bearings and camshafts, where excessive pressure could cause leaks or cracks.
The valve operates silently but continuously, adapting to changing engine conditions. During warm-up, when oil is thicker, it helps relieve initial high pressure; during heavy loads, it ensures pressure stays within safe bounds. Over time, wear on its internal seals or springs can reduce responsiveness. Signs of a failing valve include fluctuating oil pressure readings, unusual engine noise (from insufficient lubrication), or leaks around the valve housing. Addressing these issues promptly helps avoid costly damage to the lubrication system.
Ningbo Qiuning Trading Co., Ltd., a trusted supplier, offers both genuine and aftermarket options for the 140036220 valve. Genuine valves are manufactured to Perkins’ original specifications, ensuring precise pressure regulation and long-term reliability—ideal for users prioritizing the engine’s original performance standards. Aftermarket valves, designed to meet basic functional requirements at a more economical price, suit those seeking practical solutions that maintain essential pressure control.
Whether you need the reliability of genuine parts or the affordability of aftermarket alternatives, our team is ready to assist with inquiries. For more information or to discuss your needs, contact us via WeChat/WhatsApp: +8615888032469 or E-mail: allen@perkins-rx.com.
