Abstract: Disclosed is a receptacle for conveying fluid. The receptacle may include a main body, a valve seat body, a poppet, a spring retainer, spring, and a packing. The valve seat body may be disposed in and secured to the main body. The valve seat body may include: a first end portion and an opposing second end portion. The first end portion may include a plurality of first inner surfaces defining an inner annular groove. The valve seat body may include a plurality of second inner surfaces defining an inner void. The plurality of second inner surfaces may include one or more arced surfaces and one or more flats. The packing may be disposed in the inner annular groove.