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Hartzell Engine Tech Wastegates And Valve Assemblies

From $399.00 to $13194.00
Description Part Number Price Buy
470944-9029 HARTZELL VALVE ASSY
07-02679
$1294.00
Quantity
HARTZELL CONTROLLER, VARIABLE ABSOLUTE PRESSURE; REPLACES CMI 633388-10, 641434-4
07-18865
$9983.00
Quantity
470836-9003 HARTZELL CONTROLLER
07-02334
$2465.00
Quantity
470836-9019 HARTZELL CONTROLLER
07-02333
$2519.00
Quantity
470836-9020 HARTZELL CONTROLLER
07-02332
$2558.00
Quantity
470836-9021 HARTZELL CONTROLLER
07-02336
$2524.00
Quantity
HARTZELL CONTROLLER, DENSITY; REPLACES LYC LW-10682
07-18869
$13194.00
Quantity
470884-9004 HARTZELL CONTROLLER
07-02335
$6523.00
Quantity
470884-9010 HARTZELL CONTROLLER
07-02329
$4795.00
Quantity
470886-9002 HARTZELL CONTROLLER
07-02286
$1905.00
Quantity
470948-9001 HARTZELL CONTROLLER
07-02367
$4094.00
Quantity
HARTZELL CONTROLLER HSG 476644-0000
07-18958
$1118.00
Quantity
481008-9025 HARTZELL CONTROLLER
07-02328
$2971.00
Quantity
HARTZELL CONTROLLER, SLOPED; REPLACES CESSNA C165004-0701
07-18885
$8927.00
Quantity
481058-9001 HARTZELL CONTROLLER
07-02305
$3290.00
Quantity
470780-9015 HARTZELL WASTEGATE
07-02320
$3227.00
Quantity
470818-9003 HARTZELL WASTEGATE
07-02324
$3315.00
Quantity
470830-9010 HARTZELL WASTEGATE
07-02311
$5594.00
Quantity
470830-9020 HARTZELL WASTEGATE
07-02312
$5599.00
Quantity
470842-9007 HARTZELL WASTEGATE
07-02313
$3326.00
Quantity
470842-9004 HARTZELL WASTEGATE
07-02310
$4673.00
Quantity
470892-9002 HARTZELL WASTEGATE
07-02330
$2631.00
Quantity
470908-0011 HARTZELL WASTEGATE
07-02375
$7191.00
Quantity
470908-9011 HARTZELL WASTEGATE
07-02315
$3198.00
Quantity
470908-9012 HARTZELL WASTEGATE
07-02316
$3822.00
Quantity
470908-9013 HARTZELL WASTEGATE
07-02317
$3795.00
Quantity
470908-9015 HARTZELL WASTEGATE
07-02318
$3703.00
Quantity
HARTZELL FACTORY REBUILT WASTEGATE; REPLACES CESSNA C165006-0114
07-18892
$3614.00
Quantity
470944-9015 HARTZELL VALVE ASSY
07-02278
$1460.00
Quantity
470944-9024 HARTZELL VALVE ASSY
07-02269
$1464.00
Quantity
470944-9026 HARTZELL VALVE ASSY
07-02270
$1464.00
Quantity
470954-0005 HARTZELL NEW WASTEGATE ASSY
07-02374
$6733.00
Quantity
HARTZELL WASTEGATE; REPLACES LYC 47J21296
07-18881
$7159.00
Quantity
HARTZELL FACTORY REBUILT WASTEGATE; REPLACES LYC LW-12960
07-18894
$4094.00
Quantity
HARTZELL FACTORY REBUILT WASTEGATE; REPLACES CESSNA C165006-0601
07-18895
$4079.00
Quantity
HARTZELL VALVE, POPPET 477285-0001
07-18975
$825.00
Quantity
HARTZELL VALVE, POPPET 477285-0002
07-18976
$825.00
Quantity
HARTZELL VALVE COVER 477306-0000
07-18977
$399.00
Quantity
481064-9001 HARTZELL WASTEGATE
07-02322
$3290.00
Quantity
481064-9002 HARTZELL WASTEGATE
07-02321
$3293.00
Quantity
Subtotal $0.00
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Overview

Hartzell Wastegate 470842-9003

Controllers may be found in multiples or combined in a common housing. Regardless of the arrangement, they operate in parallel, even while responding to differing stimuli. Depending upon their installation, controllers may be plumbed directly into the upper deck air-stream or remotely mounted and referenced by means of hoses. Most systems are automatic but not all turbocharging systems are automatically actuated. Instead, systems like those found in the Turbo Arrow and some Mooney's have a simple, built-in exhaust leak upstream of the turbo that allows a fraction of the exhaust gases to be dumped overboard and the remainder to be routed through the turbine. A "fixed" wastegate arrangement.

The controller(s) could be appropriately thought of as the brains or command center for the entire charge-air system. As engine power, speed, or altitude is changed, the controller constantly strives for equilibrium within the system. The exhaust bypass valve (wastegate assembly) simply acts as a slave to the dictates of the controller. Engine oil becomes the muscle of the system, providing the power to actuate the movements of the wastegate assembly.

Hartzell Valve Assemblies

The Pilots' responsibility is to ensure that manifold pressures stay within their prescribed limits. But, humans are known to be fallible. With this in mind, thoughtful engineers sought to incorporate a secondary safety feature known as an absolute Pressure Relief Valve ("pop-off valve"). This valve is strategically positioned between the compressor outlet and the fuel injector/carburetor to prevent engine-damaging surges in manifold pressure. The valve head is normally held in the closed position by a spring/bellows combination. It is set to off-seat at approximately two inches above normally rated MAP.

Continental Motors compares the operation of this spring-loaded valve to a safety valve in a steam boiler. As excessive pressure builds, the valve opens and stays open until the manifold pressure again falls within acceptable limits. The aneroid-style bellows allows the valve to "crack" open at a specified pressure regardless of the operational altitude of the engine.

   
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

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Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

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