Does anyone recognize this style of access fitting? The brass hex is threaded into the round brass body. The shredder core inside is larger than the industry standard schrader core so can not remove core with standard tool like normal cores. A standard 1/4 service hose fits the 1/4 flare and also depresses the core ~~~ you just can not remove or tighten the larger core. This is on a 2 ton McQuay WSHP. Have also seen on Carrier RTU 5 years ago. Anybody know the brand name or any other info. Thanks.