Spool valve construction of modular parts

Claim 2

A spool valve for high pressure fluid distribution comprising interchangeable valve body members and housing end cap members holding said body members therebetween in a stacked end to end assembly, each body member having a longitudinal passage formed with a central valve chamber and longitudinally aligned cylindrical valve seating sections at the ends thereof, a conduit connector passage extending laterally between said chamber and an outer side wall of the member, and first and second end faces, said first end face having an annular flange concentric with the valve seating sections and inwardly of the flange provided with a recessed concentric annular groove, said second end face having a recessed annular seat and groove inwardly thereof longitudinally aligned, respectively, with the flange and groove of the first end face, the flange and seat of first and second end faces, respectively, of adjoining body members being interengaged and holding the valve seating sections thereof axially aligned, and a flexible ring seal pocketed between adjoining sections by said annular grooves of said engaged end faces, and a movable spool member extending through the longitudinal passages of said body members having a land portion thereof movable to and from valve seating relation with said pocketed ring seal.

Claim 3

A spool valve for high pressure fluid distribution comprising interchangeable valve body members and housing end cap members holding said body members therebetween in a stacked end to end assembly, each body member having a longitudinal passage formed with a central valve chamber and longitudinally aligned cylindrical valve seating sections at the ends thereof, a conduit connector passage extending laterally between said chamber and an outer side wall of the member, and first and second end faces, said first end face having an annular flange concentric with the valve seating sections and inwardly of the flange provided with a recessed concentric annular groove, said second end face having a recessed annular seat and groove inwardly thereof longitudinally aligned, respectively, with the flange and groove of the first end face, the flange and seat of first and second end faces, respectively, of adjoining body members being interengaged and holding the valve seating sections thereof axially aligned, and a flexible ring seal pocketed between adjoining sections by said annular grooves of said engaged end faces, and a movable spool member extending through the longitudinal passages of said body members having a land portion thereof movable to and from valve seating relation with said pocketed ring seal.

Claim 4

A spool valve for high pressure fluid distribution comprising interchangeable valve body members and housing end cap members holding said body members therebetween in a stacked end to end assembly, each body member having a longitudinal passage formed with a central valve chamber and longitudinally aligned cylindrical valve seating sections at the ends thereof, a conduit connector passage extending laterally between said chamber and an outer side wall of the member, and first and second end faces, said first end face having an annular flange concentric with the valve seating sections and inwardly of the flange provided with a recessed concentric annular groove, said second end face having a recessed annular seat and groove inwardly thereof longitudinally aligned, respectively, with the flange and groove of the first end face, the flange and seat of first and second end faces, respectively, of adjoining body members being interengaged and holding the valve seating sections thereof axially aligned, and a flexible ring seal pocketed between adjoining sections by said annular grooves of said engaged end faces, and a movable spool member extending through the longitudinal passages of said body members having a land portion thereof movable to and from valve seating relation with said pocketed ring seal.

Claim 5

The structure of claim 1, in which, the housing end cap members have first and second end faces interengaged with the end faces of the assembled body members, and ring seals therebetween form fluid tight end sealing seats engaged by the spool member at said ends.

Claim 6

The structure of claim 1, in which, said ring seals are T-shaped in cross section and said concentric annular grooves of the end faces are adjacent said flange and said seat in spaced relation to the end openings of adjoining valve seat sections.

Claim 7

The structure of claim 3, in which, said body members are square in overall cross sectional outline, and longitudinal through passages are provided at the corners thereof at 90* spaced intervals with tie bolts, anchored to said housing end members, extending through said passages.

Claim 8

A modular spool valve body member for stacking a plurality of identical members in end to end assembled relation between end cap elements and encasing a movable spool member for high pressure fluid distribution, said body member having a longitudinal passage therethrough provided with aligned cylindrical bores aT each end defining spool seating sections, and, between said end bores a central chamber and a conduit passage laterally connecting the chamber with an outside wall of said body, said member having a first end face with a projecting annular flange and inwardly thereof a recessed surface, each concentrically surrounding the adjacent bore opening, and the other end face having a recessed annular flange seat aligned with said flange and a recessed surface matching said recessed surface of the first end face, and longitudinal tie-bolt openings at the corners of said members at 90* spaced intervals about the axis of said seating sections for rotative selection of the angular direction of said lateral conduit passage in assembling a plurality of like modular members in end to end relation, the first and second end faces of a pair of modular members being adapted for a self-aligning interengagement of said members by seating said flange on said flange seat and the pocketing in the spacing between opposed recessed surfaces of a flexible sealing ring.

Claim 9

A modular spool valve body member for stacking a plurality of identical members in end to end assembled relation between end cap elements and encasing a movable spool member for high pressure fluid distribution, said body member having a longitudinal passage therethrough provided with aligned cylindrical bores aT each end defining spool seating sections, and, between said end bores a central chamber and a conduit passage laterally connecting the chamber with an outside wall of said body, said member having a first end face with a projecting annular flange and inwardly thereof a recessed surface, each concentrically surrounding the adjacent bore opening, and the other end face having a recessed annular flange seat aligned with said flange and a recessed surface matching said recessed surface of the first end face, and longitudinal tie-bolt openings at the corners of said members at 90* spaced intervals about the axis of said seating sections for rotative selection of the angular direction of said lateral conduit passage in assembling a plurality of like modular members in end to end relation, the first and second end faces of a pair of modular members being adapted for a self-aligning interengagement of said members by seating said flange on said flange seat and the pocketing in the spacing between opposed recessed surfaces of a flexible sealing ring.