VSE VacuumTechnology

GATE VALVE UHV

A new Gate Valve is developed in VSE VacuumTechnology. It contains significant new ideas which allows a full product range, excellent features and a great cost effectiveness.

The name of this productline:

These Gate Valves UHV are available in:

   •  sizes 65, 80, 100, 150, 200, 250, 320, 400 and more
   •  flange standards CF, ISO, ASA, JIS
   •  handoperated with lever, handoperated with handwheel, pneumatic actuation and motor driven
   •  in Compact-Design or in elongated version with the actuator backwards:

Gate-1 In-Axis
Compact-Design                                                                      In-Axis

HIGHLIGHTS

This new Gate Valve ensures excellent features:

	Smooth, vibration-free operation for the entire open/close cycle.
	No springs in the mechanism, track-guided throughout the whole stroke.
	Very low particle generation and insensitive against dust and dirt from outside the valve.
	Locked in open and in closed position.
	Insensitive in pressure difference: Nothing can hang-out, no damage if it opens against differential pressure.
	Long service intervals: 200,000 cycles in HV; 50,000 cycles in UHV version.
	All sizes: 63, 80, 100, 150, 200, 250, 320, 400. All flange standards, all actuators: handlever, handwheel, pneumatic, steppermotor.

The mechanism. The valve and its mechanism is designed entirely in stainless steel and is based on a guided motion without the use of springs. The operating principle allows to operate the valve against any differential pressure from either side without damage. It depends on the level of differential pressure and its direction, that the valve might not be able to open, but it will stay without any damage.

The housing is welded and it is designed to provide easy access to the inner mechanism for maintenance purposes. The mechanism can be completely removed from the housing.

Seals. The valve plate is tightened by a Viton O-ring, available off-the-shelf.

Seals UHV. The UHV valve uses a metal bellows as feedthrough for the actuator. The gasket for the bonnet flange on the housing is a reusable metal seal made from stainless steel, silver plated. The Gate Valve UHV is equipped just with one single O-ring in Vitonon the valve plate, all other gaskets against vacuum are made from metal.

Flanges. This GATE Valve is available with all common flange standards like CF, ISO, ASA, JIS. Additional any customized flange system is possible. Additional ports for pumping, venting or gauging are available.

Actuators. This GATE Valve is available in both versions HV and UHV in the following actuations:

Handoperation with handlever (180° angle) with visual position indication
Handoperation with handwheel with visual position indication
Pneumatically operated with solenoid valve, limit switches, plug and visual position indication
Motor driven with AC or with DC motor with visual position indication

Scope of delivery. We ship the valve, packed, inside covered by transport flanges. Plug and counter plug where applicable. Cables where applicable

HOW IT WORKS

This is the inner mechanics:
GATE 5

A swivel arm turns for 180° and moves the mechanism from open to closed position. Two rollers perform the move of the valve plate in the Z-axis. All this run without any sliding friction, rolling only. The moving partners for this Z-axis are thin sheet in stainless steel with open distance to each other which makes this mechanism very insensitive against any dust and dirt coming from the customer's installation.

Most of the parts are made in lasercutted stainless steel. This allows to equip the valve with a great principle of actuation, but keep the prices inexpensive.

The mechanism is track-guided over the whole stroke from full open to full closed. This principle is patented in the most important industrial countries. Before we have started the new GATE Valve we have produced and tested this principle in many different sizes and tested for 200,000 cycles (UHV version).

TECHNICAL DATA


Pressure range:	1 . 10-9 mbar to 1,2 bar
Leakrate:
Housing	< 1 . 10-9 mbar ls-1
Valve seat	< 1 . 10-9 mbar ls-1
Service interval	200,000 cycles
Temperatures:
Valve	250°C open, 200°C closed
Actuator	200°C
Solenoid valve	80°C
Materials:
Housing	304
Mechanism	304, 321
Actuator	304, aluminium
Gaskets:
Valve seat	Viton
Static gaskets	Metal
Actuator	Viton
Mounting orientation	any
Maximum differencial pressure at opening	1,1 bar from either side

ND		63	80	100	150	200	250	320	400
Opening possible against valve plate*)	p (mbar)	1000	600	300	250	200	150	100	100
Opening possible with valve plate	p (mbar)	1000	1000	1000	1000	1000	1000	1000	1000
Conductance under HV	C (l/s)	600	900	1700	5100	12000	22000	33000	50000
Weight handoperated valve	kg	8	10	10,5	26	32	47	74	110
Weight pneumatically operated valve	kg	9	11	11,5	28	34	50	77	115
Closing- and opening time	s	1	1	1,5	2	2,5	3	4	5
Handwheel spindle turns	n	17,5	17,5	17,5	12,5	18	26	26	34

Handlever turns	180°
Pneumatically operated valve::
Compressed air supply	4 - 8 bar overpressure
Reaction to power failure	Valve closes and remains tight
Reaction to compressed air failure	Status remains: fully open or fully closed
Supply voltage of solenoid valve	Standard 24VDC
Power consumption of solenoid valve	2,5 W
Contact rating of position indicator switches	2 A (250VAC/24VDC)

*) Valve opens with this differential pressure. If the differential pressure is higher, the valve don't open but no damage occurs.

Outline dimensions of the Gate Valve HV:

100

150

200

250

320

400

100

120

150

113.5

117.5

152

202.5

253.2

ISO

136

145

176

225

288

355

425

510

ASA

136

176

225

288

335

425

597

JIS

136

176

225

288

350

425

510

8 x M8

ø 92.1

10 x M8
ø 102.4

16 x M8
ø 130.3

20 x M8
ø 181

24 x M8
ø 231.8

ISO

4 x M8
ø 110

8 x M8
ø 125

8 x M8
ø 145

8 x M10
ø 200

12 x M10
ø 260

12 x M10
ø 310

12 x M12
ø 395

16 x M12
ø 480

ASA

4 x 3/8"
16UNC
ø 120.7

4 x 3/8"
16UNC
ø 152.4

8 x 3/8"
16UNC
ø 190.5

8 x 3/4"
10UNC
ø 241.3

8 x 3/4"
10UNC
ø298.5

12 x 3/4"
10UNC
ø362

16 x 1"
8UNC
ø 539.8

JIS

4 x M10
ø 120

8 x M10
ø160

8 x M10
ø 210

8 x M12
ø 270

12 x M12
ø 320

12 x M12
ø 370

12 x M16
ø 480

142

154

170

234

316

376

450

552

117

158

188

225

276

132

150

165

230

332

376

480

560

222

249

275

378

525

581

741

885

230

250

300

388

390

528

142

143

166

193

217

234

242

114

144

200

220

305

119

133

146

154

  Here listed are the main dimensions for your quick
  reference. On demand we give files in .igs and .stp
  for exactly check of all dimensions.

Please ask for that.

Modifications reserved.