valve head

[′valv ‚hed]

(mechanical engineering)

The disk part of a poppet valve that gives a tight closure on the valve seat.

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References in periodicals archive ?

As-Schneider offers anti-tamper valve head units, which protect valves against unauthorised access.

Pressures at the combustion chamber and exhaust port channel are applied on the exhaust valve head surfaces with opposite sign.

Effect of Valvetrain Components Misalignment on Valve and Guide Interactions in Automotive Engines

The relationship between the exhaust valve head diameter and the valve stem diameter are shown in Figure 16.

Development of heat resistant titanium alloy for exhaust valves applicable for motorcycles

The engine is a solid performer with a 90bhp output from just under 1,500cc and because it's an eight valve head the noise level is low when accelerating.

Ambiance is good with a bargain buy

All of them simulate the VL fault using valve clearance change [16-21]; however, significant causes exist besides clearance that eventuate in VL such as valve head crack and valve head notch.

Valve fault diagnosis in internal combustion engines using acoustic emission and artificial neural network

Newell did not explicitly state the reasoning for his comments, but they are believed to be the result of Microsoft's introduction of the Windows Store, which could compromise the openness of the platform according to the Valve head.

Windows 8 Release Doesn't Scare Blizzard: 'There's No Particular Fear We Have' Engineer Says

* The most basic model, the RV-E, includes only the valve head assembly for use with a system's preexisting stepper motors.

Electric rotary valves

If it isn't using much or any salt, the problem is most likely a bad valve head, meaning the resin bed isn't getting recharged with brine water at all.

Resurface a pitted garage floor

Two fillet radius to diameter ratio's R/D=0.2 and 0.3 were investigated and their influence on the flow behaviour were examined for the various valve seat and valve head configurations.

CFD modelling for parametric investigation of flow through the inlet valve of a four-stroke engine

It was a minter back then, with big valve head, stainless steel exhaust, Spax shockers, braided hoses and Minilite alloys.

MG Car Club

Look closely at the valve head for proper thread count.

Count threads for faulty exintinguishers

This only left the safety valve to relieve the pressure situation, but it failed as scale had accumulated around the valve head and its seat.