. they are used to connect multi-layer pipes by pressing the coupling on the pipe. press-fitting of the coupling ensures % tightness of the connection. couplings with external or internal thread allow to connect pipeline directly to fixtures such as faucets. the couplings have a plastic ring for seating...
. they are used to connect multi-layer pipes by pressing the coupling on the pipe. press-fitting of the coupling ensures % tightness of the connection. couplings with external or internal thread allow to connect pipeline directly to fixtures such as faucets. the couplings have a plastic ring for seating...
they make are meant to fill large spaces . the earliest pipe organs were water organs , which were powered by the flow of water , sometimes from a natural resource or using a pump . later ones used foot pedals or hand cranks to pump a bellows , which in turn produces the air that goes through the pipes...