Series VLAS VLBS-G HV Angle Valve, Single Acting (N.C)
Reliable, economical, general-purpose components for HV applications requiring cleanliness and corrosion resistance. Ideal for vacuum isolation or control in demanding installation situations. PRECESS provides HV angle valve solution for your system.
Home > Products > High Vacuum Angle Valves > Series VLAS VLBS-G HV Angle Valve, Single Acting (N.C)
Series VLAS VLBS-G HV Angle Valve, Single Acting (N.C)

The VLAS VLBS-G HV Angle Valve series delivers key performance indicators reliability and variability both. Tested in thousands of demanding applications under various process conditions the VLAS VLBS-G series has proven its outstanding reliability and variability.

With its design options in actuation from manual to pneumatic to electric, various flange connections, body materials and sealing materials, nearly every requirement can be met.


The VLAS VLBS-G is ideal for the pumping and venting of HV systems when a low outgassing rate is important. It resists high differential pressure and is fitted with a bellows-encapsulated feedthrough for particle-sensitive applications. The bellows encapsulation also prevents pressure peaks in any valve position.


Based on a reliable and robust core design, the VLAS VLBS-G HV Angle Valve offers different actuation options. The manual version is controlled by a removable hand wheel that provides good grip and precise control with a clear end stop position, avoiding the risk of over twisting. The pneumatic version can be configured as single acting with closing spring (NC), opening spring (NO) or double acting.

The pneumatic version is controlled by a solenoid valve either “on board” or in a distant location if required. The electric version is actuated by a stepper motor supplied as normally closed using a 24V DC power supply. It is designed to meet specific requirements in low power consumption, high cycle time, reduced vibration and low noise. In this regard it is an alternative for applications where pneumatic actuated valves do not satisfy these objectives.

The manual and pneumatic version are available in sizes from DN 16 to DN 160 mm.

The VLAS VLBS-G can be selected in aluminum or stainless steel in various specifications. The standard options for flange connectors are ISO-KF or ISO-K (for the electric version only ISO-KF). The VLAS VLBS-G can be used in different temperature regimes depending on the sealing elastomer chosen. In addition to these standard options further customization is possible.
Key features of the Series VLAS VLBS-G HV Angle Valve, Single Acting (N.C)
Features:
Low cost of ownership
Pneumatic drive single acting with NC or NO spring
Real bellows sealed feedthrough
Long maintenance free cycle
Angle and inline modularization design
Benefits:
Resistance against high differential pressure
Optional sealing material FKM or FFKM
Large number of design options
TECHNICAL DATA
Downloads
SIZES

DN16 to 160mm
ACTUATOR
Pneumatic
Single acting with NC or NO spring

Manual
With Removable Handwheel
BODY MATERIAL

Aluminum or Stainless Steel
FEEDTHROUGH

Bellow
LEAK RATE
Valve Body
< 1 × 10-9 mbar l/s

Valve Seat
< 1 × 10-9 mbar l/s
PRESSURE RANGE

1 × 10-8 mbar to 2 bar (abs)
DIFFERENTIAL PRESSURE
In Opening Direction
≤ 1.2 bar Max.

In Closing Direction
≤ 2 bar Max.
DIFFERENTIAL PRESSURE ON THE PLATE

≤ 1.2 bar
CYCLES UNTIL FIRST SERVICE

≥ 1,000,000
TEMPERATURE
Valve Body
≤ 120 °C

Actuator
≤ 60 °C
MATERIAL
Valve Body, Plate
AlSI 304 (1.4301)

Shaft
AlSI 304 (1.4301)

Bellows
AISI 633(AM350) or AISI 316L (1.4404, 1.4435)
SEAL
Bonnet
FKM (Viton®) or on request

Gate
FKM (Viton®) or on request
MOUNTING POSITION

Any
SOLENOID VALVE

24 VDC, 2.5 W (others on request)
POSITION INDICATOR: CONTACT RATING
Voltage
≤ 24 VDC

Current
0-50 mA
VALVE POSITION INDICATION

Visual LED Lamp


Series VLAS VLBS-G HV Angle Valve, Single Acting (N.C)
1.62MB PDF
Download
SPECIFY STANDARD PRODUCT
Get to the product details to specify your requirements to get a quote or to get a specific CAD data download.
 
CUSTOMIZED SOLUTION
Specify your customized solution.
If you have your specification already at hand, please upload it and submit it to us. We are happy to send you a quote.
Upload your specification
Maximum upload size: 15 MB, only JPG, PNG, CAD, PDF files are acceptable.
Contact
SELECTED APPLICATIONS Explore all applications