Relief Valves

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RD21 (7540 0011-00) Flow Restrictor Plate, Alloy Steel
RD21 (7540 0011-00) Flow Restrictor Plate, Alloy Steel
Boeing Distribution Services
Boeing HFA01-11221D2A Rlf
Boeing HFA01-11221D2A Rlf
Boeing Distribution Services
91/X63858000 Clapet Refoulement, Alloy Steel
91/X63858000 Clapet Refoulement, Alloy Steel
Boeing Distribution Services
ST57D193-1 Flow Restrictor Plate, Corrosion Resistant Steel
ST57D193-1 Flow Restrictor Plate, Corrosion Resistant Steel
Boeing Distribution Services
Valve, Relief, Pressure, Temperature
Valve, Relief, Pressure, Temperature

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Boeing Distribution Services
3315394 Plate Hand Valve, Copper Alloy
3315394 Plate Hand Valve, Copper Alloy
Boeing Distribution Services
PSA135-175 Airflow Patch, Plastic
PSA135-175 Airflow Patch, Plastic
Boeing Distribution Services
2684804 Valve Assy-Relief (Matched Set)
2684804 Valve Assy-Relief (Matched Set)
Boeing Distribution Services
Valve, Steel, Safety Relief
Valve, Steel, Safety Relief
Boeing Distribution Services
491B1360006-024 Aircraft Gusset, Aluminum Alloy with Hinge Cover
491B1360006-024 Aircraft Gusset, Aluminum Alloy with Hinge Cover

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Boeing Distribution Services
Boeing 311W1071-14 Door Assembly-Pressure Relief
Boeing 311W1071-14 Door Assembly-Pressure Relief

Mfr Part#
311W1071-14

M85049-51-1-20N Strain Relief
M85049-51-1-20N Strain Relief

Mfr Part#
M85049-51-1-20N

Boeing 116U1230U69 Press-Relief-Panel-Splice
Boeing 116U1230U69 Press-Relief-Panel-Splice
The Boeing Company

Mfr Part#
116U1230U69

Boeing 116U1230-69 Press-Relief Panel Splice
Boeing 116U1230-69 Press-Relief Panel Splice
The Boeing Company

Mfr Part#
116U1230-69

Boeing 116U1130-28 Lower Pressure-Relief Panel Assembly RHS
Boeing 116U1130-28 Lower Pressure-Relief Panel Assembly RHS

Mfr Part#
116U1130-28

DB0C14AD12J Cap Press
DB0C14AD12J Cap Press

Mfr Part#
DB0C14AD12J

PRLX0509800B Relief Valve, Stainless Steel
PRLX0509800B Relief Valve, Stainless Steel

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Boeing Distribution Services
VALVERELIEF
VALVERELIEF
Boeing Distribution Services
This product is no longer available.
OBIGGS Bleed Relief
OBIGGS Bleed Relief
Boeing Distribution Services
This product is no longer available.
Valve Pressure Relief Service Exchange
Valve Pressure Relief Service Exchange
Boeing Distribution (formerly Aviall)

Frequently Asked Questions

What is a relief valve?

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A relief valve is a type of safety valve used to control or limit the pressure in a system to prevent potentially dangerous conditions with too little or too much pressure.

What are the types of relief valves?

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Types of relief valves include direct-acting, pilot-operated, bellows, vacuum, pressure relief valves, and their variants.

How do relief valves work?

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Relief valves open at a preset pressure level to allow excess pressure to escape or insert air to increase pressure, preventing potential system failure or damage.

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