Pressure-regulating valve

1. A pressure-regulating valve comprising:

a core assembly having first, second, third, and fourth elastomeric o-rings seated thereon, the core assembly comprising:

an intake section comprising a conduit defining an inlet orifice and an intake flow path;

a diverter section comprising a cap adjacent at least one spacer abutting the conduit and creating at least one outward passage in fluid communication with the intake flow path; and

an output section abutting the diverter section, wherein the output section has an outlet orifice and defines an output flow path;

a slidable member having an inner surface engaging the core assembly and slidable between a first position and a second position, and wherein the slidable member comprises:

an upstream portion that engages the core assembly at a first peripheral seal wherein the first elastomeric o-ring is disposed at the first peripheral seal; and

a downstream portion in contact with the upstream portion and defining an internal flow path terminating at first and second openings at the inner surface, wherein the downstream portion comprises:

a pressure surface facing downstream;

a collar adapted to engage the core assembly at a second peripheral seal and a third peripheral seal, wherein the second and third elastomeric o-rings are respectively disposed at the second and third peripheral seals,—wherein the second peripheral seal is disposed between the first peripheral seal and the third peripheral seal; and

a biasing member that urges the slidable member from the second position toward the first position, wherein:

if the slidable member is in the first position, the outlet orifice and the inlet orifice are in fluid communication through the internal flow path,

if the slidable member is in the second position, the outlet orifice and the inlet orifice are not fluid communication through the internal flow path,

the slidable member is adapted to engage the fourth elastomeric o-ring to form a fourth peripheral seal downstream of the third peripheral seal,

and

wherein, in response to a downstream fluid pressure against the pressure surface, the slidable member is movable from the first position toward the second position.

2. The pressure-regulating valve of claim 1 , wherein the intake section, the diverter section and the output section are discrete bodies.

3. The pressure-regulating valve of claim 1 , wherein at least two of the intake section, the diverter section and the output section are integrally formed as a single body.

4. The pressure-regulating valve of claim 1 , wherein the third peripheral seal is disposed on the diverter section.

5. The pressure-regulating valve of claim 1 , further comprising at least one check valve disposed in the intake flow path and oriented to obstruct fluid flow from the outlet orifice to the inlet orifice.

6. The pressure-regulating valve of claim 1 , further comprising gasket seals disposed between the housing and the core assembly proximate the inlet orifice and the outlet orifice.

7. The pressure-regulating valve of claim 1 , wherein the housing comprises a recess adapted to receive one end of the slidable member.

8. The pressure-regulating valve of claim 1 , wherein the housing comprises two sealably interlocking members.

9. The pressure-regulating valve of claim 1 , wherein the biasing member comprises a coil spring.

10. The pressure-regulating valve of claim 1 , wherein the output section comprises support posts engaging the diverter section opposite the intake section.

11. The pressure-regulating valve of claim 1 , wherein the slidable member is adapted to engage the biasing member.

12. The pressure-regulating valve of claim 1 , wherein said at least one outward passage comprises a plurality of outward passages.

13. The pressure-regulating valve of claim 12 , wherein the core assembly has a longitudinal axis, and wherein the plurality of outward passages is circularly arranged perpendicular to the longitudinal axis.