GE offers Goyen® and ASCO® valves. We can provide technical support, complete rebuild instructions, and an in-house engineering staff to assist your crews with site-specific valve problems.

Typical pulsing problems:

Problem	Cause	Solution
Valve will not open	No power to timer or solenoids, or faulty steps in timer Solenoid coil continuity Buildup of debris (oil, dirt, etc.) in solenoid plunger sleeve Tubing between solenoid and pulse valve blocked Tubing ID too small (< 0.167") or tubing too long (> 8ft.) Solenoid plunger worn Holes in diaphragm Blocked exhaust ports	Check wiring, may need new timer board Replace coil Unplug lines- replace if needed Install correct tubing Rebuild w/ Solenoid Repair Kit Replace diaphragm Remove blockage
Valve will not close (leaks air)	Solenoid leaks air Tubing between solenoid and pulse valve leaks Solenoid energized continuously Insufficient air supply Blocked bleed ports in pulse valve housing Bad seal on diaphragm Broken diaphragm spring	Rebuild or replace solenoid Replace tubing and/or connectors Check power - replace timer board Check compressor supply lines, and the header is properly sized Lightly tap housing near bleed port to release blockage or disassemble valve and clean out bleed port Replace w/ diaphragm kit

Goyen® is a registered trademark of Goyen Controls Co. Pty Ltd.
ASCO® is a registered trademark of Automatic Switch Company.