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Small metal valve block with four ports and pilot fittings

Parker

Parker B340000XXC 4-Way Air Pilot Trap 1/8 in Port

SKU CH-BGHA-VYAHM MPN B340000XXC

A 4-way air pilot valve with 1/8 in ports, 145 psi max pressure and 20 psi pilot requirement

  • TypeDrain Components
  • 4-way 2-position valve directs airflow in two states
  • 1/8 in NPT port connects to standard pneumatic lines
  • 75 cfm flow coefficient delivers responsive actuation
  • 145 psi maximum pressure handles demanding compressed-air systems
  • 5 to 120 °F temperature range suits industrial environments

Parker 4-Way Air Pilot Valve

The Parker B340000XXC is a 4-way, 2-position pilot air control valve designed for pneumatic systems requiring directional flow control. It suits automation engineers and maintenance technicians building or servicing compressed-air circuits. The valve operates with remote pilot actuation on both ends, using a 10-32 UNF pilot port. It is not for installers needing a 3-way function or a larger port size than 1/8 in.

Thermals noise and power draw

The valve body is rated for a maximum operating pressure of 145 psi and a pilot pressure of 20 psi, with a temperature range of 5 to 120 degrees F. It delivers a flow coefficient of 0.75 and a maximum flow of 0.75 cfm under standard conditions. The centre position is not applicable for this 2-position design. No electrical power is consumed by the valve itself, as actuation relies entirely on external pilot air supply.

Build quality and connectors

The compact housing measures 3 11/32 in length, 71/100 in width, and 1 1/8 in height, allowing installation in confined manifold assemblies. Ports use 1/8 in NPT threads for the main flow paths and 10-32 UNF for pilot connections, requiring compatible fittings and tubing. The vacuum-rated external pilot capability supports specialised circuit designs. Buyers needing integrated electrical solenoids or manual override levers should specify a different valve series.

Highlights

  • 4-way 2-position valve directs airflow in two states
  • 1/8 in NPT port connects to standard pneumatic lines
  • 75 cfm flow coefficient delivers responsive actuation
  • 145 psi maximum pressure handles demanding compressed-air systems
  • 5 to 120 °F temperature range suits industrial environments

Specifications

TypeDrain Components
BrandParker
ModelB340000XXC

Questions about this item

How do I install the Parker B340000XXC 4-way air pilot trap and what is the common mistake?

Connect the 1/8 in supply ports and the 10-32 UNF pilot ports, then secure the valve using its 3 11/32 in length and .71 in width footprint; the step often missed is verifying the external pilot vacuum line is routed before pressurising the system to 145 psi.

What maintenance or replacement will the Parker B340000XXC need over time?

Inspect the pilot seals and spool bore every few million cycles; if leakage appears at the 1/8 in ports or pilot pressure drops below 20 psi, replace the valve assembly as internal components are not field-serviceable.

What limit appears first when the Parker B340000XXC runs continuously?

The 120 °F maximum temperature rating is typically reached before the 145 psi pressure limit during sustained cycling, especially if ambient heat pushes the fluid temperature toward the upper end of the 5 to 120 °F range.

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