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Chemical pumps are core equipment used in chemical, petrochemical, pharmaceutical and environmental protection industries to transport corrosive, high-viscosity, particle-laden, flammable and explosive media. Many technical procurement personnel tend to confuse pump models during type selection. Teffiko, an expert in fluid equipment, has sorted out a complete classification and selection framework based on practical working conditions.

Dry running (dry operation/idling) of a centrifugal pump refers to an abnormal operating condition where the pump cavity lacks liquid, has insufficient liquid volume or loses suction fluid while the pump keeps running. It is a highly destructive fault that frequently occurs in industrial centrifugal pumps. Centrifugal pumps rely on conveyed liquid for lubrication, cooling and hydraulic pressure stabilization. Once deprived of medium protection, internal components will rub directly against each other and accumulate heat rapidly. Even a short period of idling can cause irreversible damage and even complete pump failure leading to shutdown.

Chemical process pumps are core fluid transportation equipment in industries such as chemical engineering, petroleum, and pharmaceuticals. As special types of centrifugal pumps, they convert mechanical energy into fluid kinetic energy and pressure energy by centrifugal force, and are engineered for harsh operating conditions involving high temperature, high pressure, corrosion resistance and continuous operation.

Centrifugal pumps are core equipment used in industrial and municipal fields and generate severe vibration during operation. The equipment foundation, preformed anchor holes and anchor bolts constitute key concealed works that guarantee unit stability. Many on-site faults such as pump body deviation, resonance, bearing overheating and bolt fracture are usually caused by non-standard construction of preformed holes or substandard bolt installation. This document elaborates on the key guidelines for construction of preformed anchor holes and installation of anchor bolts for centrifugal pumps.

Pumps are core equipment for fluid transportation. Most pump failures stem from improper operation, installation, model selection and maintenance, rather than product quality issues. Such issues may lead to air binding, cavitation, leakage, insufficient flow rate and increased power consumption. In severe cases, they can result in equipment damage and production shutdowns. Teffiko has long been dedicated to the field of fluid transportation equipment.

API PLAN 53B flush plan is a mainstream barrier fluid circulation and pressurization system for zero-leakage seals under working conditions with high-pressure, toxic and flammable media, which strictly complies with the API 682 industry standard. Many pump manufacturers and operation & maintenance engineers fail to distinguish the pressurization logic of Plan 53A, 53B and 53C. This document fully explains the working principle of API PLAN 53B flush plan.