GG20 Troubleshooting: Leaks, Hard Connections, No Flow, Stiff Lever
Short answer: A small gas release on disconnect is normal (1.7 to 1.9 cm³). A continuous leak is not: release the lever, hit the emergency stop, clear the area and take the nozzle out of service. If the nozzle won't thread on smoothly, disconnect and retry; never force it, and check for a damaged or worn fill point. Low or no flow usually means the coupling isn't fully engaged, a clogged strainer, or a dispenser issue. A pump that won't start on a reed-switch dispenser points to a missing J magnet.
| Symptom | Likely cause | What to do |
|---|---|---|
| Short hiss when unscrewing | Normal release of trapped liquid between nozzle and fill valve | Nothing. Keep hands clear of the coupling. |
| Continuous or uncontrolled gas release | Damaged seal, worn nose piece, damaged fill valve | Release the lever, press the emergency stop, clear the area. Trained personnel inspect the nozzle and the receptacle. Isolate the nozzle if it recurs. |
| Nut won't thread on smoothly | Misalignment, cross-threading, dirty or damaged ACME thread on the fill point | Disconnect and reconnect square to the valve. Never force it. Inspect both threads. |
| Leak at the inlet swivel | Swivel seals worn, grub screw loose | Out of service. Swivel seals are part of the 6 to 12 month inspection and the 24-month seal kit. |
| No flow with lever pulled | Nozzle not fully coupled (the valve won't open uncoupled), pump not running | Check the nut is fully tightened and the dispenser is running. |
| Flow lower than usual | Clogged strainer, pump or hose restriction, adapter in line | Have the strainer inspected and cleaned or replaced (EK172.1). Remove adaptors if fitted. |
| Pump doesn't start when nozzle lifted | Reed-switch boot but nozzle has no magnet | Fit the J magnet option (GGJ assembly) or change the dispenser setting. |
| Lever hard to hold | Normal for single nose piece; or worn lever/valve parts | Consider the GG20H or GG20DN, which have lower lever force. If force has increased over time, inspect the valve. |
| Connector nut won't turn freely | Dirt, worn pawl or spring | Clean; have the pawl and spring checked at inspection. |
Rows on "flow lower than usual" and "lever hard to hold" combine ELAFLEX's component descriptions with common service practice; they are not listed word for word in the manual. Everything involving a leak follows the manual's stop-and-isolate instruction.
Quick answers
My GG20 leaks continuously, what should I do?
Release the lever, press the dispenser emergency stop, clear the area, and take the nozzle out of service for inspection by trained personnel.
Sources
- Installation and Operating Manual, GG1 & GG20 series (ELAFLEX PACIFIC, 5/2016)
- GG20 Repair & Maintenance Manual (ELAFLEX PACIFIC / L.G. Equipment)