was tempted the other day to use a 22mm push fit elbow on 3/4 copper tube,, tried it it was OK but then used a 3/4 olive and comp elbow,, i know thay make 3/4 by 22m push fit ,,,but will 22mm hold ??? cant find any warning about using them on 3/4 pipe have you removed one thats been on years ??? have you been to one thats blown off ??? whats your veiws