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AN ASSEMBLY CONSISTING OF A PNEUMATIC ACTUATOR, A BUTTERFLY VALVE , A ROD AND A SPINDLE. THE ASSEMBLY IS WELDED IN TO AUTOMOTIVE EXHAUST SYSTEMS AND IS USED TO CONTROL THE FLOW OF EXHAUST GASSES. WHEN A VACCUUM IS APPLIED TO THE ACTUATOR, THE ROD IS PULLED INSIDE AGAINST A SPRING. THE ROD IS ATTACHED TO A LEVER, WHICH IN TURN IS CONNECTED TO THE SPINDLE IN THE VALVE. AS THE ROD RETRACTS INSIDE THE ACTUATOR THE LEVER AND SPINDLE ROTATE. A BUTTERFLY VALVE IS ATTACHED TO THE SPINDLE WHICH CLOSES THE VALVE AS VACUUM IS APPLIED TO THE ACTUATOR. WHEN THE VACUUM IS 'RELEASED' THE SPRING INSIDE THE ACTUATOR PUSHES THE ROD OUT AND THE VALVE OPENS.

PTFE (PLASTIC) LINED BUTTERFLY VALVES. THESE ARE A QUARTER TURN VALVE PRODUCT USUALLY WITH A PTFE LINER AND PFA DISC.

THE HPTACC (HIGH PRESSURE TURBINE ACTIVE CLEARANCE CONTROL) VALVE HAS INTERGRATED DUAL BUTTERFLY VALVES DRIVEN BY A SINGLE FUEL POWERED ACTUATOR. POSITION FEEDBACK TO THE ECU IS PROVIDED BY A DUAL CHANNEL LVDT INSTALLED ON THE ACTUATOR. ONE BUTTERFLY VALVE CONTROLS THE FLOW FROM THE 4TH STAGE COMPRESSOR BLEED WHILE THE OTHER BUTTERFLY VALVE CONTROLS THE FLOW FROM THE 9TH STAGE COMPREESOR BLEED. THE 4TH STAGE AIR IS MIXED WITH THE 9TH STAGE AIR DOWNSTREAM OF THE VALVE. SIZE 37 X 25 x 21 CMS. NET WEIGHT 9.1 KG.

A VALVE , PRESSURE REGULATOR AND SHUT OFF. MADE OF STEEL, PNEUMATICALLY ACTUATED , SPRING LOADED CLOSED BUTTERFLY TYPE MODULATED VALVE WHICH FITS TO A BOEING 737 CIVIL AIRCRAFT. UNIT DIMENSIONS 32 X 21 X 15CM NET WEIGHT 4.6 KG 9CM BORE DIAMETER.

A PRECOOLER VALVE THAT IS ATTACHED TO THE DISCHARGE PORT OF THE ENGINE FAN. THE PURPOSE OF THE VALVE IS TO CONTROL THE THE FLOW OF COOLING AIR THROUGH THE HEAT EXCHANGER TO REGULATE THE TEMPERATURE OF THE BLEED AIR. THIS A PNEUMATICALLY ACTUATED, TEMPERATURE CONTROLLED, SPRING LOADED OPEN BUTTERFLY MODULATING VALVE WHICH IS FITTED TO A BOEING 737 CIVIL AIRCRAFT . WEIGHT 4.5KG