Class   251	VALVES AND VALVE ACTUATION
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1.1

BLOW-OUT PREVENTERS (I.E., COOPERATING SEGMENTS OF ANNULUS)

1.2

. (1 indent ) Deformable annulus

1.3

. (1 indent ) Radial reciprocating ram

3

PATTERN TRACER CONTROLLED ACTUATOR

4

TUBE COMPRESSORS

5

. (1 indent ) Fluid pressure actuated

6

. (1 indent ) Roller tube contacting element

7

. (1 indent ) Perpendicularly reciprocating tube contacting element

8

.. (2 indent ) Screw actuated

9

. (1 indent ) Pivoting tube contacting element

10

.. (2 indent ) U-shaped resilient bar or rod

11

HEAT OR BUOYANCY MOTOR ACTUATED

12

FLUID ACTUATED OR RETARDED

14

. (1 indent ) Fluid and non-fluid actuators

15

. (1 indent ) Compulsory cut-off after flow period

16

.. (2 indent ) Serial main line cut-off and manual valves (e.g., hydraulic "fuses")

17

... (3 indent ) Interconnected motion

18

.... (4 indent ) Manual and pilot valves

19

.. (2 indent ) Auxiliary pilot valve overrides a first pilot valve

20

.. (2 indent ) Forced return of actuator to cut-off position

21

.. (2 indent ) Actuator connection released on opening of cut-off valve

22

.. (2 indent ) Control fluid released into closed build-up chamber

23

.. (2 indent ) Dashpot interconnects actuator and valve

24

. (1 indent ) Venturi or line flow effect assisted

25

. (1 indent ) Pilot or servo type motor

26

.. (2 indent ) Alternative pressure sources or pilot valve

27

.. (2 indent ) Servo failure responsive control of main valve

28

.. (2 indent ) Fluid actuated pilot valve

29

... (3 indent ) With additional pilot valve control

30.01

.. (2 indent ) Electrically actuated pilot valve

30.02

... (3 indent ) Main valve biased closed by fluid pressure

30.03

.... (4 indent ) Venting passage within movable main valve

30.04

....• (5 indent ) Pilot valve movably mounted within or around main valve

30.05

.... (4 indent ) Fluid pressure sole means for biasing valve closed

31

.. (2 indent ) Double or oppositely acting motor units

32

.. (2 indent ) Latched pilot valve

33

.. (2 indent ) Choked pressure type servo motor

34

... (3 indent ) With reverse flow prevenging (nonsiphoning)

35

... (3 indent ) Variable choke passage according to valve position

36

... (3 indent ) With separate dashpot or choked fluid retarding chamber

37

... (3 indent ) With choke or restrictor in main line

38

... (3 indent ) Pilot valve seated in motor or valve element

39

.... (4 indent ) Controls inlet to choke chamber

40

.... (4 indent ) Tilting pilot valve

41

... (3 indent ) Remote pilot valve actuation

42

... (3 indent ) Adjustable opening limit for main valve

43

... (3 indent ) Main valve biased open by line pressure

44

.... (4 indent ) Differential reaction surface for line pressure

45

....• (5 indent ) Diaphragm or bellows surface

46

.... (4 indent ) Diaphragm or bellows motor element

47

.. (2 indent ) With separate dashpot or choked fluid retarder

48

. (1 indent ) Dashpot or fluid controlled retarder or timer

49

.. (2 indent ) Latch or trip releasing

50

.. (2 indent ) Line pressure connected dashpot or choke chamber

51

... (3 indent ) With choke by-pass or relief means

52

... (3 indent ) Chamber fills on closing of main valve

53

.. (2 indent ) Line connected open accumulating chamber

54

.. (2 indent ) Closed fluid circuit dashpot or choke chamber

55

.. (2 indent ) With choke by-pass or relief means

56

. (1 indent ) Plural operations (e.g., lifting and rotating rotary valve)

57

. (1 indent ) Fluid link or column actuator

58

. (1 indent ) With mechanical movement between actuator and valve

59

. (1 indent ) Rotary or oscillatory motor

60

. (1 indent ) With adjustable limit stop for actuator

61

. (1 indent ) Flexible wall expansible chamber reciprocating valve actuator

61.1

.. (2 indent ) Flexible wall valves fluid

61.2

.. (2 indent ) Coaxial actuator, seat and valve

61.3

... (3 indent ) Valve between coaxial spring biasing means and actuator

61.4

... (3 indent ) Coaxial spring biasing means between valve and actuator

61.5

... (3 indent ) Actuator wall between valve and coaxial spring biasing means

62

. (1 indent ) Piston type expansible chamber reciprocating valve actuator

63

.. (2 indent ) Unitary piston and valve

63.4

.. (2 indent ) Lost motion, abutment or resilient connection between actuator and valve

63.5

.. (2 indent ) Coaxial actuator, seat and valve

63.6

... (3 indent ) Coaxial spring biasing means between valve and actuator

64

WITH NON-FLUID RETARDER

65

PERMANENT OR CONSTANTLY ENERGIZED MAGNET ACTUATOR

66

BIASED TRIP

67

. (1 indent ) With second diverse control

68

. (1 indent ) Electrical trip actuation

69

.. (2 indent ) Trip operated on failure of electric power

70

.. (2 indent ) With electrical resetting means

71

... (3 indent ) Rotary electric motor

72

. (1 indent ) Weight biased trip

73

. (1 indent ) Fluid pressure trip actuation

74

. (1 indent ) Mechanical movement trip actuation

75

WITH SNAP ACTION

76

IMPACT TYPE ACTUATOR

77

LOST MOTION BETWEEN ACTUATOR AND VALVE

78

. (1 indent ) Lever

79

. (1 indent ) Overload release

80

.. (2 indent ) Elastic

81

.. (2 indent ) Slip coupling between actuator and valve

82

. (1 indent ) Check valve with external opening and closing means

83

.. (2 indent ) Spring

84

VALVE HEAD MOVABLY CONNECTED FOR ACCOMMODATION TO SEAT

85

. (1 indent ) With yieldable connection

86

. (1 indent ) With universal connection

87

. (1 indent ) With single plane swing pivoted connection

88

. (1 indent ) Rotatable only

89

WITH MEANS FOR BLOCKING OR DISABLING ACTUATOR

89.5

. (1 indent ) Actuator, or blocking means, includes flow path joint

90

. (1 indent ) Attachments

91

.. (2 indent ) Requiring modification of valve

92

.. (2 indent ) Acting on valve limit stop

93

... (3 indent ) Mounted on valve actuator

94

. (1 indent ) Fluid pressure biased latch

95

. (1 indent ) Released by non-valving actuator motion

96

.. (2 indent ) Linear reciprocation of rotary handle

97

... (3 indent ) Latch connects actuator to body through head

98

.. (2 indent ) Pivoted handle

99

... (3 indent ) With spring

100

.. (2 indent ) Rotation of reciprocating handle

101

. (1 indent ) Latch manipulator mounted on handle or stem

102

.. (2 indent ) Constrained linear motion

103

... (3 indent ) With pivoted latch

104

... (3 indent ) With latch rigidly associated with manipulator

105

.... (4 indent ) Latch lug extends transversely to axis of manipulator

106

... (3 indent ) With transversely movable latch

107

.. (2 indent ) With pivoted latch

108

... (3 indent ) Resilient latch and manipulator

109

... (3 indent ) With spring

110

.. (2 indent ) With reciprocating latch

111

. (1 indent ) Latch manipulator mounted on valve body

112

.. (2 indent ) Set screw

113

.. (2 indent ) Constrained linear motion of latch with rigidly associated manipulator

114

.. (2 indent ) With pivoted latch

115

... (3 indent ) Resilient latch and manipulator

116

... (3 indent ) With spring

117

WITH RESTRICTOR IN PARALLEL TO MAIN VALVE

118

WITH MATERIAL GUIDE OR RESTRICTOR

119

. (1 indent ) Aspirated stem drain

120

. (1 indent ) Movable or resilient guide or restrictor

121

.. (2 indent ) Adjustable guide or restrictor

122

... (3 indent ) Tapered metering plug

123

. (1 indent ) Valve at point of greatest restriction

124

.. (2 indent ) Venturi restrictor

125

. (1 indent ) Drop forming restrictor

126

. (1 indent ) Spiral guide or spiral restrictor

127

. (1 indent ) Baffle or zigzag flow restrictor

128

WITH DETACHABLE ACTUATOR AND MEANS TO PREVENT LEAKAGE WHEN ACTUATOR IS DETACHED

129.01

ELECTRICALLY ACTUATED VALVE

129.02

. (1 indent ) With means to bias valve open

129.03

. (1 indent ) With nonelectrical actuator

129.04

. (1 indent ) Remote or follow-up control system for electrical actuator

129.05

. (1 indent ) Having means to produce digital pulses

129.06

. (1 indent ) Having element dimensionally responsive to field

129.07

. (1 indent ) Balanced valve

129.08

. (1 indent ) Having means to produce proportional flow

129.09

. (1 indent ) Solenoid having plural coils

129.1

.. (2 indent ) Coils have common axis

129.11

. (1 indent ) Rotary electric actuator

129.12

.. (2 indent ) With limit control

129.13

.. (2 indent ) With speed or braking control

129.14

. (1 indent ) Freely rotatable ball valve

129.15

. (1 indent ) Including solenoid

129.16

.. (2 indent ) Having plate-shaped armature

129.17

.. (2 indent ) Having diaphragm between coil and opening controlled

129.18

.. (2 indent ) With means to adjust stroke of armature

129.19

.. (2 indent ) Lost motion between valve and valve actuator

129.2

.. (2 indent ) Mechanical movement between valve and solenoid

129.21

.. (2 indent ) Coil surrounds valve port or flow line

129.22

.. (2 indent ) Solenoid within flow line

142

WITH CORRELATED FLOW PATH

149

. (1 indent ) Valve operated by joining flow path sections

149.1

.. (2 indent ) Joining motion includes linear valve operating component

149.2

... (3 indent ) Valve rotatably or hingedly mounted

149.3

... (3 indent ) Valve motion is transverse to, or opposed to, the linear component

149.4

... (3 indent ) Joint includes screw thimble

149.5

... (3 indent ) Of rotatable flow path section

149.6

... (3 indent ) Motion opposed by valve spring

149.7

.... (4 indent ) Contact only, or friction, joint

149.8

. (1 indent ) Valve operated by motion of flow path

149.9

. (1 indent ) Flow path joint interlocked with valve or actuator

144

. (1 indent ) Tank

145

. (1 indent ) Pipe side

146

.. (2 indent ) Clamp type coupling

147

. (1 indent ) Pipe end (terminal valve)

148

. (1 indent ) Pipe coupling or union

150

.. (2 indent ) Flexible or expansible

151

.. (2 indent ) Non-rotatable conduit coupling

152

.. (2 indent ) Valve seat and coupling element removable as a unit

143

. (1 indent ) With mounting or support

153

. (1 indent ) With particular outlet or inlet

154

.. (2 indent ) Fluid deflecting means at outlet

155

.. (2 indent ) Nozzle or spout

156

... (3 indent ) With receptacle accommodating feature

157

WITH MEANS TO INCREASE HEAD AND SEAT CONTACT PRESSURE

158

. (1 indent ) With positive reduction

159

.. (2 indent ) Seat pressed to valve

160

.. (2 indent ) Rotary valve

161

... (3 indent ) Independent actuation

162

... (3 indent ) Cam or wedge

163

.... (4 indent ) Encased

164

... (3 indent ) Screw

165

.... (4 indent ) Non-reciprocating

166

....• (5 indent ) With slip coupling

167

.. (2 indent ) Bifaced

168

... (3 indent ) Screw

169

... (3 indent ) Toggle

170

. (1 indent ) Seat pressed to valve

171

.. (2 indent ) Packing presed by gland

172

.. (2 indent ) Fluid pressure

173

... (3 indent ) Butterfly valve

174

.. (2 indent ) Spring

175

. (1 indent ) Fluid pressure

176

. (1 indent ) Spring

177

.. (2 indent ) Pivoted valve

178

... (3 indent ) Bifaced

179

... (3 indent ) Terminal

180

.. (2 indent ) Rotary valve

181

... (3 indent ) Plug

182

.... (4 indent ) Expanding

183

.... (4 indent ) Encased

184

....• (5 indent ) At actuator end

185

... (3 indent ) Spring in fluid

186

.. (2 indent ) Piston

187

. (1 indent ) Separate actuators or actuator motion

188

.. (2 indent ) Rotary valve

189

.. (2 indent ) Piston with expansible packing

190

. (1 indent ) Piston

191

.. (2 indent ) Packing expands with closing

192

. (1 indent ) Rotary valve

193

. (1 indent ) Gate valve

194

.. (2 indent ) Screw sole actuator of expander and valve

195

.. (2 indent ) Bifaced

196

... (3 indent ) In both closed and open positions

197

... (3 indent ) Faces pressed by subsequently movable expander

198

.... (4 indent ) With second expander

199

.... (4 indent ) Face element directly contacts casing

200

... (3 indent ) Carried expander contacts valve casing

201

.... (4 indent ) Pivoting expander

202

... (3 indent ) Faces or carrier contact stationary expander

203

.. (2 indent ) Cam or wedge

204

... (3 indent ) Moves with respect to head and seat

205

WITH SELECTIVE FLOW REGULATION

206

. (1 indent ) Different sized bores in valve head

207

.. (2 indent ) Rotary plug

208

. (1 indent ) Rotary

209

.. (2 indent ) Plug

210

SEQUENTIAL OPENING OR CLOSING OF SERIAL PORTS IN SINGLE FLOW LINE (E.G., ANTI-SCORING)

211

SERIAL ALTERNATELY CLOSED PORTS

212

RELATIVELY MOVABLE VALVE ELEMENTS FORM SINGLE PORT CLOSURE (E.G., IRIS DIAPHRAGM)

213

MECHANICAL MOVEMENT ACTUATOR

214

. (1 indent ) Particularly packed or sealed

215

. (1 indent ) Plural motions of valve

216

.. (2 indent ) Screw threads in flow path

217

.. (2 indent ) Valve head between actuator and screw

218

.. (2 indent ) Encased

219

... (3 indent ) Threadlessly coupled to screw

220

.... (4 indent ) Coupling socket in screw

221

... (3 indent ) Threads in removable sleeve

222

.... (4 indent ) Sleeve removably in bonnet

223

.... (4 indent ) Sleeve is bonnet

224

.... (4 indent ) Sleeve flange mounted between body and bonnet

225

.. (2 indent ) Threads in removable sleeve

226

.. (2 indent ) Biased

227

... (3 indent ) Spring

228

. (1 indent ) With pivoted valves

229

. (1 indent ) Plural dissimilar mechanical movements

230

. (1 indent ) Ratchet

231

. (1 indent ) Lever

232

.. (2 indent ) Train (plural serial)

233

.. (2 indent ) Leverage variable during operation

234

.. (2 indent ) Adjustable leverage

235

.. (2 indent ) Swiveled

236

.. (2 indent ) Biased

237

... (3 indent ) Sliding contact

238

.... (4 indent ) Spring

239

....• (5 indent ) Spring co-axial with valve arm

240

....•. (6 indent ) Spring stop on valve stem

241

....•. (6 indent ) Spring abuts valve stem guide

242

... (3 indent ) Spring

243

.... (4 indent ) Co-acts with lever

244

.... (4 indent ) Co-axial with valve stem

245

....• (5 indent ) Spring stop on valve stem

246

....• (5 indent ) Spring abuts valve stem guide

247

... (3 indent ) Weight

248

. (1 indent ) Gear

249

.. (2 indent ) Mutilated or Geneva gearing

249.5

.. (2 indent ) Worm type

250

.. (2 indent ) Rectilinear rack

250.5

.. (2 indent ) Mating segments

251

. (1 indent ) Cam

252

.. (2 indent ) Co-axial or parallel axes

253

... (3 indent ) Biased

254

.... (4 indent ) Bi-directional

255

....• (5 indent ) Non-reciprocating

256

.... (4 indent ) Encased

257

.. (2 indent ) Encased with seal

258

... (3 indent ) Bi-directional

259

... (3 indent ) Cam is finger-like extension

260

... (3 indent ) Overhung crank type

261

... (3 indent ) Center crank type

262

.. (2 indent ) Biased

263

... (3 indent ) Spring

264

. (1 indent ) Screw

265

.. (2 indent ) Plural thread

266

.. (2 indent ) Non-reciprocating actuator

267

... (3 indent ) Internal thread

268

.... (4 indent ) Inverted cup-shape

269

....• (5 indent ) Separable actuator bushing

270

... (3 indent ) Removable guide

271

.... (4 indent ) Resiliently mounted actuator

272

... (3 indent ) Biased

273

.. (2 indent ) Internal thread

274

.. (2 indent ) Encased

275

... (3 indent ) Biased

276

.... (4 indent ) Spring

277

.. (2 indent ) Biased

278

... (3 indent ) Spring

279

. (1 indent ) Linkage

280

.. (2 indent ) Toggle

281

BALANCED VALVES

282

. (1 indent ) Reciprocating

283

. (1 indent ) Rotary

284

LIMIT STOP

285

. (1 indent ) Adjustable

286

. (1 indent ) Rotary valve

287

.. (2 indent ) Stop element on head

288

.. (2 indent ) Stop element on actuator

289

VALVE ACTUABLE FROM PLURAL POSITIONS

290

PLURAL SELECTIVE NEUTRAL POSITIONS FOR VALVE OR ACTUATOR

291

DETACHABLE ACTUATOR

292

. (1 indent ) Rotary valve

293

EXTENSION FOR ACTUATOR

294

FLEXIBLE ACTUATOR (E.G., BOWDEN WIRE; CHAIN)

295

PEDAL ACTUATOR

296

PLURAL MOTIONS OF ACTUATOR

297

WITH FRICTION DETENT

298

PIVOTED VALVES

299

. (1 indent ) Terminal

300

.. (2 indent ) Gate

301

. (1 indent ) Gate

302

.. (2 indent ) Bifaced

303

. (1 indent ) Biased

304

ROTARY VALVES

305

. (1 indent ) Butterfly

306

.. (2 indent ) Head and/or seat packing

307

... (3 indent ) Adjustable

308

.. (2 indent ) Head and stem connections

309

. (1 indent ) Plug

310

.. (2 indent ) Axial and radial bore

311

... (3 indent ) Lateral inlet and outlet

312

.. (2 indent ) Retainer at actuator end

313

. (1 indent ) Biased

315.01

. (1 indent ) Ball valve

315.02

.. (2 indent ) Having a particular hardness (i.e., durometric property)

315.03

.. (2 indent ) Of specific material

315.04

... (3 indent ) Ceramic (e.g., glass or fired clay)

315.05

... (3 indent ) Nonmetallic

315.06

.. (2 indent ) Having a swinging actuator

315.07

.. (2 indent ) Eccentric seating

315.08

.. (2 indent ) Including trunnion opposite axially extending actuating means

315.09

... (3 indent ) With removable trunnion cover

315.1

.. (2 indent ) Housing construction

315.11

... (3 indent ) Head removable perpendicular to flow passage

315.12

.... (4 indent ) At the actuator side (i.e., top entry)

315.13

... (3 indent ) Assembled around the head

315.14

... (3 indent ) Head removable along one side of flow passage

315.15

... (3 indent ) Having inseparable head

315.16

.. (2 indent ) Ball construction

314

. (1 indent ) Seat or interface seal

316

.. (2 indent ) Replaceable

317

... (3 indent ) Deformable material

317.01

... (3 indent ) Carried by head

318

RECIPROCATING VALVE

319

. (1 indent ) Push or pull operator

320

.. (2 indent ) Biased

321

... (3 indent ) Spring

322

.... (4 indent ) Spring stop on valve stem

323

.... (4 indent ) Spring abuts valve stem guide

324

. (1 indent ) Piston

325

.. (2 indent ) With internal flow passage

326

. (1 indent ) Gate

327

.. (2 indent ) Bifaced

328

.. (2 indent ) Seats

329

.. (2 indent ) Bodies

330

. (1 indent ) Actuator controlled stem seal

331

. (1 indent ) Diaphragm

332

. (1 indent ) Diverse material seal at valve interface

333

. (1 indent ) Particular head and seat cooperation

334

.. (2 indent ) Elastic deformation

335.1

HERMETIC FLEXIBLE WALL SEAL FOR ACTUATOR

335.2

. (1 indent ) Diaphragm

335.3

. (1 indent ) Bellows

336

BIASED VALVE

337

. (1 indent ) Springs and spring retainers

338

. (1 indent ) Weight biased

339

VALVE ACTUATOR EXTENDING THROUGH FLUID INLET OR OUTLET

340

VALVE ACTUATOR SURROUNDING PIPE, INLET OR OUTLET

341

VALVE ACTUATOR IS VALVE CASING OR EXTENSION THEREOF

342

. (1 indent ) Jointed or flexible wall

343

. (1 indent ) Sleeve valve

344

.. (2 indent ) Flow passage in sleeve

345

.. (2 indent ) Rotary

346

. (1 indent ) Plural motions of valve

347

. (1 indent ) Reciprocating valve

348

. (1 indent ) Biased valve

349

VALVE ACTUATOR IS INLET OR OUTLET

350

. (1 indent ) Detachable tip

351

. (1 indent ) Plural motions of valve

352

. (1 indent ) Rotary

353

. (1 indent ) Reciprocating spout

354

. (1 indent ) Biased valve

355

WITH ACTUATION LUBRICATING MEANS

356

VALVE

357

. (1 indent ) Removable seat engaging element

358

. (1 indent ) Reinforced flexible material

359

. (1 indent ) Seats

360

.. (2 indent ) Removable

361

... (3 indent ) Mounted between casing sections

362

... (3 indent ) Compression or tension retained

363

... (3 indent ) With seal

364

.. (2 indent ) Head engaging gasket

365

.. (2 indent ) Retained by seat deformation

366

. (1 indent ) Bodies

367

.. (2 indent ) Sectional

368

. (1 indent ) Materials

369

MISCELLANEOUS

	CROSS-REFERENCE ART COLLECTIONS

900

VALVES WITH O-RINGS

901

CURTAIN TYPE VALVES

902

SPRINGS EMPLOYED AS VALVES

903

NEEDLE VALVES

904

SNAP FIT PLUG VALVES

905

MOVABLE COIL ELECTRICAL ACTUATOR (E.G., VOICE COIL)

	FOREIGN ART COLLECTIONS

FOR000

CLASS-RELATED FOREIGN DOCUMENTS

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