The tantric sex act is basically, diametrically opposite and different. It is not to relieve, it is not to throw energy out. It is to remain in the act without ejaculation, without throwing energy out; to remain in the act merged - just at the beginning part of the act, not the end part. This changes the quality; the complete quality is different then.
There are two types of climaxes, two types of orgasm. One type of orgasm is known. You reach to a peak of excitement, then you cannot go further: the end has come.
Tantra is centered on another type of orgasm. If we call the first kind a peak orgasm, you can call the tantric orgasm a valley orgasm.
