Spiros G Raftis

6367505, Apr 9, 2002

Mar 22, 2000

09/533298

Spiros G. Raftis - Pittsburgh PA
Andre T. Abromaitis - Sewickley PA
Michael J. Duer - Zelienople PA

Red Valve Co., Inc. - Carnegie PA

F16K 1516

137846, 137847, 137850

A check valve having an upstream inlet part mountable on a discharge end of a conduit, a downstream outlet part adapted to prevent backflow of fluid through the check valve, and a transition part located between the upstream inlet part and the downstream outlet part. A longitudinal dimension of the downstream outlet part extending in a direction transverse to a direction of flow is at least approximately 1. 57 times the diameter of the upstream inlet part.

6367783, Apr 9, 2002

Feb 28, 2001

09/720386

Spiros G. Raftis - Pittsburgh PA

Red Valve Company, Inc. - Carnegie PA

B01F 304

2611221, 2611222

A diffuser includes a substantially rigid base member having a first side and a second side, and an inlet conduit defining a central bore depending from the second side of the base member. A resilient dome member having a plurality of perforations is sealed to a peripheral edge of the first side of the base member. A coupling member, preferably in the form of a check valve, provides cooperation with a fluid source. As the diffuser is pressurized the dome member expands away from the base member and fluid is diffused by the perforations.

6585005, Jul 1, 2003

Aug 18, 2000

09/641474

Spiros G. Raftis - Pittsburgh PA
Michael J. Duer - Pittsburgh PA

Red Valve Co., Inc. - Carnegie PA

F16K 1514

137850, 137846

A support mechanism for a tide gate valve having an internal cavity, wherein the support mechanism includes a support body receivable in the tide gate valve cavity to help prevent the tide gate valve from collapsing in on itself when subjected to backflow pressure. The support mechanism is positioned adjacent to a pipe end and can take the shape of a ring having legs or flanges, a cage, a partial or more than partial cone, or other suitable shape. Moreover, arms can extend from the ring to provide further support and orifices can be added to the support mechanism to increase or decrease flow characteristics.

6953059, Oct 11, 2005

Jul 25, 2003

10/628041

Spiros G. Raftis - Pittsburgh PA, US

Red Valve Company, Inc. - Carnegie PA

F16K015/14

137846, 251358

A large diameter check valve has an upstream inlet part mountable on a discharge end of a conduit, a downstream outlet part adapted to prevent backflow of fluid through the check valve, and a transition part located between the upstream inlet part and the downstream outlet part. A support is included in the check valve to prevent drooping of the check valve via a cantilever effect. A method for supporting a check valve is also disclosed.

7104279, Sep 12, 2006

May 30, 2001

10/296001

Spiros G. Raftis - Pittsburgh PA, US
Michael J. Duer - Zelienople PA, US

Red Valve Co., Inc. - Carnegie PA

E03B 11/12
F16K 15/14

137592, 137846

An apparatus () for preventing stagnation in a fluid reservoir () comprised of: an inlet/outlet conduit (); a manifold (), which communicates the inlet/outlet conduit () to inlet check valves () and outlet check valves (); the inlet check valves () being positioned on the manifold () and being oriented such that a fluid () will flow from the manifold () through the inlet check valves () to the reservoir () during reservoir filling and fluid flow is prevented through the inlet check valves () during reservoir draining; and the outlet check valves () being positioned on the manifold () and spaced from the inlet check valves () to provide fluid flow within the reservoir () in the general direction from the inlet check valves () to the outlet check valves (), the outlet check valves () being oriented such that fluid flows from the reservoir () through the outlet check valves () into the manifold () during reservoir draining and fluid flow through the outlet check valves () is prevented during reservoir filling.

20020104573, Aug 8, 2002

Jan 2, 2002

10/038535

Spiros Raftis - Pittsburgh PA, US

Red Valve Company, Inc.

F15D001/00

138/041000, 138/037000, 138/040000

A passive flow control valve including a barrier member positioned in a fluid conduit between an upstream conduit portion and a downstream conduit portion. The barrier member substantially prevents fluid flow around a barrier member perimeter. The passive flow control valve also includes barrier member orifices extending through the barrier member, which allow controlled fluid flow through the barrier member orifices. When the fluid flows through the upstream conduit portion and encounters the barrier member, the fluid is prevented from passing around the barrier member perimeter and is forced to flow through the barrier member orifices.

20040033108, Feb 19, 2004

Aug 15, 2003

10/641571

Chris Raftis - Pittsburgh PA, US
Spiros Raftis - Pittsburgh PA, US

E02B013/00
F16K007/04

405/037000, 251/005000, 251/008000

A pinch valve for connection between an upstream pipeline and a downstream pipeline, the pinch valve including a body having a fixed upper pinch bar and a moveable lower pinch bar, an elastomeric sleeve, wherein the elastomeric sleeve is situated between the fixed upper pinch bar and the moveable lower pinch bar, and means to raise and lower the moveable lower pinch bar. A method of regulating fluid flow is also disclosed.

20060120214, Jun 8, 2006

Nov 1, 2005

11/264248

Spiros Raftis - Pittsburgh PA, US

B01F 15/00

366165200

A deflector for a fluid mixing device includes a helical-shaped body having a first end, a second end, and a helical-shaped body between the first and the second ends. The helical body has two or more channels isolated from one another. In one non-limiting embodiment of the invention, the deflector is mounted in a cavity of a pipe between the first and second ends of the pipe to provide a mixing device having a first passageway connecting the first and the second ends of the pipe, and a second passageway connecting the first and the second ends of the pipe. The deflector in the pipe maintains the first and second passageways isolated from, and in a spaced relationship to, one another. Each of the passageways defines a hollow helical path as the distance from the first end toward the second end of the pipe increases.