PRECESS - PRECESS Vacuum

Series VLAS VLBS 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.

Series VLAS VLBS HV Angle Valve, Single Acting(N.C)

The VLAS VLBS 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 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 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 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 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 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 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 HV Angle Valve, Single Acting (N.C)

1.58MB PDF

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