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1-PCV valve controls emissions — it takes the gases produced by the crankcase and routes them back into your engine's combustion chambers to be safely burned without harming your vehicle or the environment.
2-The most common types of pressure control valves are the pressure relief valve and the pressure reducing valve.

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a PCV valve controls emissions  it takes the gases produced by the crankcase and routes them back into your engine's combustion chambers to be safely burned without harming your vehicle or the environment.

2 Pcv13 ppsv23

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keeping system pressures below a desired limit to maintaining a set pressure level in part of a circuit.

Pressure relief valves are the safeguards that limit maximum pressure in a system by diverting excess gases when pressure gets too high. The pressure at which a relief valve first opens to allow fluid to flow through is known as cracking pressure. Sequencing valves are normally closed two-way valves, and they regulate the sequence that various functions in a circuit will occur. They resemble direct-acting relief valves. Direct-acting valves arepressure-reducing valves that limit the maximum pressure available in the secondary circuit regardless of pressure changes in the main circuit. This assumes the work load generates no back flow into the reducing valve port. Counterbalance valves are typically closed and are often used to maintain a set pressure in a portion of a circuit, usually to counterbalance a weight. The style of valve is ideal for counterbalancing an external force or to counteract a weight like in a press to keep it from free-falling

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Types  of PCV: relief, reducing, sequence, counterbalance, safety, and unloading. All of them are typically closed valves, except for reducing valves, which are usually open.

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pick up gases produced by the crankcase and routes them back into the  engine's safley

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1.to maintain steady oil pressure in your system, to maintain oil seal integrity throughout your engine, to maintain correct emissions levels and to prevent excessive engine wear.

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it takes the gases produced by the crankcase and routes them back into your engine's combustion chambers to be safely burned without harming your vehicle or the environment.

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1-keeping system pressures below a desired limit to maintaining a set pressure level in part of a circuit.
2-pressure relief valve and the pressure reducing valve

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1- Pressure-control valves are found in practically every pneumatic and hydraulic system. They help in a variety of functions, from keeping system pressures below a desired limit to maintaining a set pressure level in part of a circuit.

2-include relief, reducing, sequence, counterbalance, safety, and unloading.

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1: keeping system pressures below a desired limit to maintaining a set pressure level in part of a circuit..

2: relief, reducing, sequence, counterbalance, safety, and unloading.

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1: it takes the gases produced by the crankcase and routes them back into your engine's combustion chambers to be safely burned

2: PCV13 and PPSV23

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1-to maintaining a set pressure level in part of a circuit.
2-the pressure relief valve and the pressure reducing valve

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Function of PCV:keeping system pressures below a desired limit to maintaining a set pressure level in part of a circuit.

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1- What is the function of PCV?
2- What are the common types of PCV?