Valve assembly having rigid seating surfaces

A valve assembly comprising:

• a valve body including a bore and a port extending to an end of the bore;
• an orifice member received in the bore of the body and including an end wall received on the end of the bore and a side wall extending from the end wall, and wherein the end wall defines an orifice providing fluid communication with the port of the body;
• a valve member received in the orifice member that is movable along an axis with respect to the orifice;
• a flat spring secured on an end of the side wall of the orifice member and including arms extending radially inwardly and secured to the valve member, whereby the flat spring acts to bias the valve member with respect to the orifice;
• a valve seat secured to the end wall of the orifice member and defining an opening providing fluid communication with the orifice;
• and
• a plug secured to an end of the valve member opposite the valve seat such that, when the valve member is moved along the axis towards the orifice, the plug contacts the valve seat to seal the opening of the valve seat and prevent fluid flow through the orifice and the port of the body.