Product Introduction: Cylinder Liner Flange 1. Product Overview Cylinder liner flange is a high-pressure connecting and positioning component installed on the fluid end of triplex mud pumps, used to lock and fix cylinder liners, cooperate with cylinder covers and stuffing box assemblies, and bear the alternating impact pressure of high-pressure drilling fluid. It is a key pressure-bearing structural part connecting the pump housing and cylinder liner. 2. Material & Processing The whole piece is forged from high-strength alloy steel, followed by quenching and tempering for overall strengthening, with strong compressive and anti-fatigue performance against long-term slurry shock. The sealing surface is precision milled to ensure flatness; multiple evenly distributed bolt holes are arranged around the circumference for uniform clamping force. The inner hole is machined with positioning steps to tightly limit the axial displacement of the cylinder liner, avoiding liner loosening and jumping during pump operation. The surface adopts shot blasting plus anti-rust coating treatment to resist erosion from mud, lubricating oil and humid outdoor construction environments. The built-in sealing ring groove is matched with special sealing rings to block high-pressure mud leakage at the liner joint. 3. Core Structural Features 1. Dual positioning step structure: Inner step restricts cylinder liner radial offset, outer shoulder fits the fluid end pump body, dual limitation ensures coaxiality of liner, extension rod and piston. 2. Integrated pressure-bearing thick wall: Thickened transition section eliminates stress concentration, no deformation or cracking under rated maximum working pressure. 3. Standardized matching interface: Unified thread and bolt specifications, fully interchangeable with mainstream mud pump cylinder liners, cylinder covers and stuffing boxes. 4. Detachable split assembly structure: Can be disassembled separately without cutting off the entire fluid end pipeline, greatly shortening the time for replacing worn cylinder liners on site. 4. Main Functions 1. Fix cylinder liner firmly: Lock the liner inside the fluid end pump cavity to prevent axial movement caused by reciprocating hydraulic impact, reduce liner eccentric wear. 2. Auxiliary sealing: Cooperate with sealing rings to form a static sealing surface between the pump body and cylinder liner, avoid high-pressure mud seepage from the gap of the liner base. 3. Support stuffing box assembly: Provide stable installation base for stuffing box, maintain the straight running track of piston rod and extension rod. 4. Buffer hydraulic impact: Disperse the periodic pressure shock transmitted by the cylinder liner to the pump body, reduce overall vibration of the fluid end. 5. Application Scenarios Widely supporting various models of triplex mud pumps for oil drilling, horizontal directional crossing and geological exploration. Installed at the rear end of the cylinder liner, matched with cylinder liner, sealing ring, cylinder cover and stuffing box to form a complete fluid end pressure-bearing cylinder assembly. 6. Product Value It maintains the stable installation position of the cylinder liner, reduces abnormal wear of liners, pistons and packing consumables, and eliminates safety hazards such as mud leakage caused by liner looseness. It is an indispensable pressure-bearing positioning fitting for the fluid end of mud pumps, ensuring stable output of circulation pressure and long-term safe operation of the Pump Unit.