A:  Hi, GKRH - We have never gone through the approval process for the City of Los Angeles.

A:  Yes, stiffeners are included.  Although one of the packages I bought initially for store pickup was opened (had obviously been returned) and one of the stiffeners was missing so had to return for an unopened package with both stiffeners.

A:  Hi, David - Yes, stiffeners are included with each fitting. 2 for the coupler and elbow; 3 for the tee.

A:  Hi, Peter - The O-rings are not separate but attached to the spacer component. Please see page 5 at this link: https://cdn2.assets-servd.host/fixed-puma/production/AAAAHOME-FLEX_Underground_Manual_2021_12.pdf. If you'd like, please call me (Dave) at 661-257-3923 x 1026 M-F 7:30a - 2p. I may be able to assist. Thanks.

A:  It appears that the fittings are compression type so if you are having leaks it is probably a dirty joint or an incorrectly tightened joint. Gas leaks are hard to find but I have found that Big Blue Micro Leak detector is much better than using soapy water. It is a gel type product that doesn't evaporate as quickly as water soap mix. Hope this helps. ET PS try to test with dry nitrogen or compressed air. I have used both but have found that my 20V Max Cordless Tire Inflator works best.

A:  Hi, Dale - All of our HomeFlex Underground Fittings are approved by NFPA, ICC, IAPMO, and UPC as shown in our Design & Installation Manual at HomeFlex.com. However, we have heard on some rare occasions where a local propane company won't allow their use. Our polypipe is o.k. but fittings are not. As far as we've determined, this is because the propane company may own the equipment and wants to sell and/or use only their own fittings. Since the poly pipe is made to specific dimensional and materials standards, fittings from other companies will work fine on our pipe.

A:  I don’t have everything installed and flowing. Lack of directions.