Parts database: Petrochemical industry

This page lists 59 typical spare and wear parts from petrochemical industry plants, sorted into 7 groups. Each card briefly explains what the part is and what it does.

The list shows examples, not a fixed range: we also source parts that are not listed here. “Request” copies the part name straight into the request form, where you add manufacturer and part number.

Parts by group

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Pumps and seals
Process centrifugal pump
Pump that conveys liquids with a fast-rotating impeller; standard in refineries and chemical plants.
Request: Process centrifugal pump
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Pumps and seals
Impeller
Rotating bladed wheel of the centrifugal pump; material matched to the fluid.
Request: Impeller
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Pumps and seals
Pump shaft
Shaft that carries the impeller and is driven by the motor.
Request: Pump shaft
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Pumps and seals
Mechanical seal
Seal that closes the rotating shaft against the pump casing; two faces run against each other.
Request: Mechanical seal Read more in the knowledge base: Mechanical seal
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Pumps and seals
Seal face and seat
Wear parts of the mechanical seal made of carbon, silicon carbide or carbide.
Request: Seal face and seat
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Pumps and seals
Seal support system
Vessel with barrier fluid that supplies and monitors double mechanical seals.
Request: Seal support system
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Pumps and seals
Wear ring
Ring between impeller and casing that limits back-flow; replaced when worn.
Request: Wear ring
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Pumps and seals
Diaphragm metering pump
Pump that adds chemicals in precise small quantities.
Request: Diaphragm metering pump
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Pumps and seals
Pump diaphragm
Diaphragm of a metering or diaphragm pump; separates drive and fluid.
Request: Pump diaphragm
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Pumps and seals
Magnetic drive pump
Sealless pump in which a magnetic field transmits torque through a containment shell.
Request: Magnetic drive pump
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Pumps and seals
Pump bearing
Rolling bearing in the pump bearing frame; its condition affects smooth running and seal life.
Request: Pump bearing
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Valves
Industrial valve
Generic term for valves, gates, plugs and butterflies that shut off or control fluids.
Request: Industrial valve Read more in the knowledge base: Industrial valve
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Valves
Ball valve
Shut-off valve with a bored ball that opens and closes with a quarter turn.
Request: Ball valve
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Valves
Butterfly valve
Valve with a rotating disc; compact, also for large nominal sizes.
Request: Butterfly valve
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Valves
Gate valve
Valve in which a wedge moves across the flow; almost no pressure loss when fully open.
Request: Gate valve
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Valves
Control valve
Valve that controls flow, pressure or temperature according to a control signal.
Request: Control valve
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Valves
Check valve
Valve that allows flow in one direction only.
Request: Check valve
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Valves
Valve actuator
Pneumatic or electric actuator that opens, closes or positions a valve.
Request: Valve actuator
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Valves
Valve positioner
Device on the control valve that matches the valve position exactly to the set point.
Request: Valve positioner
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Valves
Gland packing
Packing rings that seal the stem of a valve to the outside.
Request: Gland packing
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Valves
Valve seat and plug
Sealing parts inside the valve; leak when worn and are replaced or reworked.
Request: Valve seat and plug
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Valves
Solenoid valve
Electrically switched valve, often as a pilot for pneumatic actuators.
Request: Solenoid valve
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Heat exchange and vessels
Shell-and-tube heat exchanger
Heat exchanger in which one fluid flows through tubes and the other around them.
Request: Shell-and-tube heat exchanger
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Heat exchange and vessels
Plate heat exchanger
Compact heat exchanger made of corrugated plates; gaskets are wear parts.
Request: Plate heat exchanger
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Heat exchange and vessels
Plate gasket
Elastomer gasket between the plates of a plate heat exchanger.
Request: Plate gasket
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Heat exchange and vessels
Heat exchanger tube
Tube of the tube bundle; material depends on the fluid, replaced or plugged when corroded.
Request: Heat exchanger tube
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Heat exchange and vessels
Manway gasket
Gasket for manway and handhole covers of vessels and columns.
Request: Manway gasket
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Heat exchange and vessels
Column tray
Internal in distillation columns on which vapour and liquid come into contact.
Request: Column tray
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Heat exchange and vessels
Random packing
Loose elements in columns that provide a large surface for mass transfer.
Request: Random packing
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Heat exchange and vessels
Agitator
Drive with shaft and impeller that mixes the contents of vessels and reactors.
Request: Agitator
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Heat exchange and vessels
Sight glass
Pressure-resistant glass in a vessel or line for viewing level or flow.
Request: Sight glass
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Piping and flanges
Flange gasket
Gasket between two flanges; spiral wound, kammprofile or flat depending on pressure and fluid.
Request: Flange gasket
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Piping and flanges
Spiral wound gasket
Gasket of wound metal strip and filler for high pressures and temperatures.
Request: Spiral wound gasket
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Piping and flanges
Stud bolts and nuts
Threaded studs with nuts that tighten flange joints; strength matched to temperature.
Request: Stud bolts and nuts
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Piping and flanges
Expansion joint
Bellows that absorbs thermal expansion and vibration in pipelines.
Request: Expansion joint
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Piping and flanges
Pipe bend and fitting
Elbow, tee or reducer for connecting pipelines.
Request: Pipe bend and fitting
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Piping and flanges
Pipe support
Clamp, sliding or fixed support that carries and guides pipelines.
Request: Pipe support
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Piping and flanges
Spectacle blind
Plate for safely blanking a line between two flanges, for example during maintenance.
Request: Spectacle blind
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Piping and flanges
Strainer
Strainer insert in the line that protects pumps and valves from debris.
Request: Strainer
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Compressors and blowers
Screw compressor
Compressor with two screw rotors for air or process gas.
Request: Screw compressor
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Compressors and blowers
Reciprocating compressor
Compressor with pistons and valves for high pressures.
Request: Reciprocating compressor
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Compressors and blowers
Compressor valve
Suction or discharge valve of a reciprocating compressor; plates and springs wear.
Request: Compressor valve
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Compressors and blowers
Piston and rider ring
Rings that seal and guide the piston; a wear part.
Request: Piston and rider ring
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Compressors and blowers
Intake filter
Filter that keeps dust out of the intake air.
Request: Intake filter
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Compressors and blowers
Oil separator
Element that separates oil from the compressed air.
Request: Oil separator
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Compressors and blowers
Centrifugal fan
Fan for flue gas, process air or extraction.
Request: Centrifugal fan
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Measurement and control
Pressure transmitter
Sensor that converts pressure into an electrical signal for the control system.
Request: Pressure transmitter
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Measurement and control
Pressure gauge
Dial gauge showing pressure locally.
Request: Pressure gauge
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Measurement and control
Thermocouple with thermowell
Temperature sensor in a thermowell that separates it from the process fluid.
Request: Thermocouple with thermowell
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Measurement and control
Flow meter
Device that measures the flow of liquids or gases, for example electromagnetic or Coriolis.
Request: Flow meter
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Measurement and control
Level measurement
Radar, pressure or float sensor that records the level in vessels.
Request: Level measurement
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Measurement and control
Gas analyser
Instrument that measures the composition of process or flue gas.
Request: Gas analyser
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Safety and explosion protection
Safety valve
Valve that opens automatically on overpressure and protects the vessel or line.
Request: Safety valve
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Safety and explosion protection
Rupture disc
Membrane that bursts at a set pressure, safely relieving overpressure.
Request: Rupture disc
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Safety and explosion protection
Flame arrester
Device that prevents a flame from propagating through lines or tank vents.
Request: Flame arrester
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Safety and explosion protection
Gas detector
Fixed or portable sensor that warns of flammable or toxic gases.
Request: Gas detector
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Safety and explosion protection
Explosion-proof motor
Electric motor of a design intended for hazardous areas.
Request: Explosion-proof motor
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Safety and explosion protection
Ex luminaire
Luminaire for hazardous areas.
Request: Ex luminaire
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Safety and explosion protection
Ex junction box
Enclosure for cable connections in hazardous areas.
Request: Ex junction box

Part not listed?

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