An oil-spray tube assembly includes a tube having an outer circumferential surface, an inner circumferential surface defining a hollow center, a closed distal end, an open proximal end defining an axially recessed annular seat, and an orifice extending between the inner and outer surfaces. A poppet valve has a radially extending flange and is received in the hollow center with the flange disposed on the annular seat. The valve defines an inlet, a cylindrical valve chamber in fluid communication with the inlet, an outlet exiting the valve chamber, and a valve seat between the inlet and the outlet. A ball is disposed within the valve chamber and is movable between a closed position in which the ball is seated on the valve seat to sever fluid communication between the inlet and the outlet and an open position in which the ball is spaced from the valve seat to place the inlet and outlet in fluid communication.

An apparatus and method for valve cartridge extraction from a valve assembly, wherein the assembly includes a valve member body, a cartridge, and a valve cartridge extraction (VCE) tool comprising at least one pin disposed on the upper surface of the VCE tool. During cartridge removal, the VCE tool is uncoupled from the valve member body and is coupled to the cartridge with the at least one pin. The cartridge is rotated with the coupled VCE tool to assist in cartridge removal. The valve assembly may also include a hood covering the VCE tool.

A one-piece flap valve (150) comprising first and second portions hingedly connected to one another by a flexible strip, the first portion having a hingeable internal valve flap (152) and the second portion comprising an at least partially annular valve seat (154). The first and second portions being socket-fitted together by relative movement, such that the valve seat (54, 154) is spanned by the flap (152), the second portion comprising first and second legs (121a, 121b) having first and second locking lugs (127a, 127b) extending radially outwardly therefrom, the locking lugs for location within locking apertures (125a, 125b) of a tube body (10) of a dispenser. The flap valve (150) comprising a retaining mechanism configured and arranged such that once the flap valve is installed in a tube body of a dispenser, the retaining mechanism resists against radially inward displacement of the first and second legs.

A backflow prevention assembly is disclosed including a backflow prevention valve having a valve housing including a valve inlet end and a valve outlet end; a spool spacer of predetermined length having a first end and a second end; an inlet shut-off valve; and an outlet shut-off valve, wherein the spool spacer extends between the backflow prevention valve and one of the inlet shut-off valve and the outlet shut-off valve. The entire assembly, including the backflow prevention valve, the spool spacer, the inlet shut-off valve, and the outlet shut-off valve, is a certified assembly, certified by a certifying authority prior to installation. Methods of manufacturing a backflow prevention assembly and replacing a backflow prevention assembly are also disclosed.

A check valve mounting structure includes a seat plate including a mounting hole and linked notches, a tubular bottom fitting with the top end thereof aimed at the mounting hole and having lugs extended from the periphery, and a holder block including a top receptacle, a shoulder and a bottom receptacle, which includes protruding portions outwardly extended from the periphery, first channels upwardly extended from the bottom side to a predetermined distance and second channels respectively and horizontally extended from the top ends of the first channels toward the periphery thereof. The bottom receptacle is attached onto the tubular bottom fitting, allowing the protruding portions to pass through the notches. The lugs are respectively inserted into the first channels and the second channels.

A backflow prevention assembly is disclosed including a backflow prevention valve having a valve housing including a valve inlet end and a valve outlet end; a spool spacer of predetermined length having a first end and a second end; an inlet shut-off valve; and an outlet shut-off valve, wherein the spool spacer extends between the backflow prevention valve and one of the inlet shut-off valve and the outlet shut-off valve. The entire assembly, including the backflow prevention valve, the spool spacer, the inlet shut-off valve, and the outlet shut-off valve, is a certified assembly, certified by a certifying authority prior to installation. Methods of manufacturing a backflow prevention assembly and replacing a backflow prevention assembly are also disclosed.

An oil-spray tube assembly includes a tube having an outer circumferential surface, an inner circumferential surface defining a hollow center, a closed distal end, an open proximal end defining an axially recessed annular seat, and an orifice extending between the inner and outer surfaces. A poppet valve has a radially extending flange and is received in the hollow center with the flange disposed on the annular seat. The valve defines an inlet, a cylindrical valve chamber in fluid communication with the inlet, an outlet exiting the valve chamber, and a valve seat between the inlet and the outlet. A ball is disposed within the valve chamber and is movable between a closed position in which the ball is seated on the valve seat to sever fluid communication between the inlet and the outlet and an open position in which the ball is spaced from the valve seat to place the inlet and outlet in fluid communication.

A backflow prevention assembly is disclosed including a backflow prevention valve having a valve housing including a valve inlet end and a valve outlet end; a spool spacer of predetermined length having a first end and a second end; an inlet shut-off valve; and an outlet shut-off valve, wherein the spool spacer extends between the backflow prevention valve and one of the inlet shut-off valve and the outlet shut-off valve. The entire assembly, including the backflow prevention valve, the spool spacer, the inlet shut-off valve, and the outlet shut-off valve, is a certified assembly, certified by a certifying authority prior to installation. Methods of manufacturing a backflow prevention assembly and replacing a backflow prevention assembly are also disclosed.

A resiliently mounted valve body has a sealing face and, by way of spring arms, is resiliently-elastically connected to a holding ring which encompasses the valve body in at least one position, so that the valve body is repositionable in a parallel manner in the axial direction. The holding ring is in one piece with and materially integral to a latching body for fastening a check valve element in a latching manner in a fluid-conducting installation of a check valve assembly. The latching body extends in the axial direction, facing away from the valve body, and has at least one latching protrusion which is resiliently-elastically repositionable in the radial direction.

An apparatus and method for valve cartridge extraction from a valve assembly, wherein the assembly includes a valve member body, a cartridge, and a valve cartridge extraction (VCE) tool comprising at least one pin disposed on the upper surface of the VCE tool. During cartridge removal, the VCE tool is uncoupled from the valve member body and is coupled to the cartridge with the at least one pin. The cartridge is rotated with the coupled VCE tool to assist in cartridge removal. The valve assembly may also include a hood covering the VCE tool.