# US 2019/0170261 A1 · Control plate in a valve > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0170261 A1 - Document ID: US20190170261A1 - Status: Published application - Kind: A1 - Application number: 16/211,957 - Filed: 2018-12-06 - Published: 2019-06-06 - Earliest claimed: 2015-07-09 - Assignees: VistadelTek, LLC - Applicants: VistadelTek, LLC - Inventors: Kim Ngoc Vu - Web page: https://patentgrep.com/patent/US20190170261A1 ## CPC - F16K 1/36: Valve members (for double-seat valves F16K1/44 {; for butterfly valves F16K1/222, F16K1/223}) - B29C 37/0085: {by means of openings in the layers (joining through openings B29C66/304)} - B29C 70/80: Moulding sealing material into closure members {(placing sealings in closures B21D51/46)} - F16K 1/46: Attachment of sealing rings - F16K 7/14: arranged to be deformed against a flat seat - F16K 11/0743: {with both the supply and the discharge passages being on one side of the closure plates} - F16K 25/005: {Particular materials for seats or closure elements} - F16K 27/0236: {Diaphragm cut-off apparatus} - F16K 41/103: {the diaphragm and the closure member being integrated in one member} - F16K 41/12: with approximately flat diaphragm - F16K 27/102: {for lift-valves} - F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)} - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) ## Abstract A control plate for effecting superior shut-off in a proportional control valve comprises a moveable disk-shaped element that has a flat surface, generally perpendicular to the valve axis of symmetry when closed, and translates toward or away from an orifice surrounded by a narrow lip or orifice ridge. Enhanced leak tightness in the valve shut-off condition is achieved by selectively incorporating into the control plate materials that are softer than the material comprising the orifice ridge. ## Claims ### Claim 1 A valve bonnet for use with a control valve body, the control valve body having a fluid conduit opening surrounded by a planar orifice ridge, the valve bonnet comprising: a bonnet body; a valve diaphragm in sealing engagement with the bonnet body at an outer periphery of the valve diaphragm; a control shaft secured to the valve diaphragm, the control shaft having a shank projecting from the control shaft; and a valve control plate body secured to the shank, the valve control plate body formed from a first material having a first hardness, the valve control plate body having a first surface configured to face toward the fluid conduit opening, the valve control plate body having a recess defined in the first surface of the valve control plate body and a plurality of holes extending through the control plate body within the recess; and a valve seat insert formed from a second material having a second hardness that is less than the first hardness, the valve seat insert having a first surface configured to face toward the fluid conduit opening and sealingly engage the planar orifice ridge, the valve seat insert being molded into the recess and including a plurality of at least one of posts, columns, and bridges formed in the valve seat insert that extend into and fill the plurality of holes defined in the control plate body, and lock the valve seat insert into the control plate body. ### Claim 2 (depends on 1) The valve bonnet of claim 1, wherein the valve seat insert is configured to engage a planar orifice ridge that is one of circular and non-circular. ### Claim 3 (depends on 1) The valve bonnet of claim 1, wherein the valve diaphragm is formed integrally with the bonnet body, and the control shaft is integrally formed with the valve diaphragm. ### Claim 4 (depends on 1) The valve bonnet of claim 1, wherein the diaphragm is formed separately from the bonnet body, and is welded to the bonnet body. ### Claim 5 (depends on 1) The valve bonnet of claim 1, wherein the recess is a trepanned groove defined in the valve control plate body, and the valve seat insert fills the trepanned groove. ### Claim 6 (canceled) ### Claim 7 (canceled) ### Claim 8 A control valve comprising: a valve body having a first fluid conduit terminating at a first fluid conduit opening, a second fluid conduit commencing at a second fluid conduit opening, and an orifice ridge surrounding the first fluid conduit opening, one of the first fluid conduit and the second conduit being a fluid inlet conduit, and the other of the first fluid conduit and the second fluid conduit being a fluid outlet conduit; a bonnet body secured to the valve body; a valve diaphragm in sealing engagement with the bonnet body at an outer periphery of the valve diaphragm; a control shaft secured to the valve diaphragm, and a shank projecting from the control shaft; and a valve control plate body secured to the shank, the valve control plate body formed from a first material having a first hardness, the valve control plate body having a first surface configured to face toward the first fluid conduit opening, the valve control plate body having a recess defined in the first surface of the valve control plate body and a plurality of holes extending through the control plate body within the recess; and a valve seat insert formed from a second material having a second hardness that is less than the first hardness, the valve seat insert having a first surface configured to face toward the first fluid conduit opening and sealingly engage the orifice ridge, the valve seat insert being molded into the recess and including a plurality of at least one of posts, columns, and bridges formed in the valve seat insert that extend into and fill the plurality of holes defined in the control plate body, and lock the valve seat insert into the control plate body. ### Claim 9 (depends on 8) The control valve of claim 8, wherein the orifice ridge is one of circular and non-circular. ### Claim 10 (depends on 8) The control valve of claim 8, wherein the recess is a trepanned groove defined in the valve control plate body, and the valve seat insert fills the trepanned groove. ### Claim 11 (canceled) ### Claim 12 (canceled) ### Claim 13 (depends on 8) The control valve of claim 8, wherein the valve diaphragm is formed integrally with the bonnet body, and the control shaft is integrally formed with the valve diaphragm. ### Claim 14 (depends on 8) The control valve of claim 8, wherein the diaphragm is formed separately from the bonnet body, and is welded to the bonnet body. ### Claim 15 (depends on 8) The control valve of claim 8, wherein the first surface of the valve seat insert that sealingly engages the planar orifice ridge is planar. ### Claim 16 (depends on 8) The control valve of claim 8, wherein the first material is a metal. ### Claim 17 (depends on 16) The control valve of claim 16, wherein the second material is a polymer. ### Claim 18 (depends on 8) The control valve of claim 8, wherein the second material is a polymer. ### Claim 19 (depends on 1) The control valve of claim 1, wherein the first surface of the valve seat insert that sealingly engages the planar orifice ridge is planar.