Pressure regulating valve

A pressure regulating valve for a pressure regulating assembly for regulating a flow of a fluid from a source of the fluid to a fluid consumer, the pressure regulating valve comprising:

• a seal seat defining an opening;
• a seat stem moveable between a closed position in which the seat stem engages the seal seat and prevents a flow of fluid through the opening of the seal seat, and an open position in which the seat stem is spaced from the seal seat and permits a flow of the fluid through the opening of the seal seat;
• a biasing element biasing the seat stem in the closed position;
• a housing defining a passage extending along an axis between an inlet and an outlet;
• the seal seat, seat stem and biasing element positioned in the passage of the housing such that movement of the seat stem between the closed and open positions permits or prevents the flow of the fluid between the inlet and outlet of the housing, and wherein a coupling mechanism fixes the housing inside a channel of a regulator body of the pressure regulating assembly;
• a seat retainer positioned in the passage of the housing adjacent to the seal seat with the seal seat positioned axially between the seat retainer and the seat stem for inhibiting axially movement of the seal seat;
• and
• a stem nut coupled to the housing in the passage axially against the seat retainer for axially holding the seat retainer in place.