Showing posts with label Schubert & Salzer. Show all posts
Showing posts with label Schubert & Salzer. Show all posts

Sliding Gate Control Valves from Schubert & Salzer


Schubert & Salzer's sliding gate control valves are designed as an effective alternative to traditional control valves. The sliding gate valve controls liquid, vapor, and gaseous media precisely, quickly, and economically. The design is uniquely simple, but is intelligently built to handle complex applications that require precise control under taxing conditions. They are an excellent choice for a variety of media, including steam, liquids, and gases.

Sliding Gate Control Valve Operation

A sealing plate with many crossways slots of equal height is fixed in the body at right angles to the flow direction. A moving disc with the same slot arrangement moves in parallel to the fixed disc, thereby changing the flow cross-section. The prevailing differential pressure presses the moving disc against the fixed disc and seals it. 

The machined orifices in the fixed plate or disc can vary in design, size, and configuration, determining the flow coefficient (Cv) and the flow characteristic of the valve. As the cross sectional area changes and the valve modulates, flow is broken apart, creating a variable field of area flow, which reduces energy and noise. The differential pressure creates a unique seal between the two plates, and when in the sealed position, an overlap of approximately 1 mm creates a leak-tight valve.

ADVANTAGES OF THE SLIDING GATE CONTROL VALVE

  • Fits into tight spaces
  • Outstanding rangeability
  • 40:1 to 160:1
  • Easy to install and maintain
  • Variable Cv Values
  • Significantly reduced energy consumption
  • Minimal wear
  • Extremely low leakage rate
  • Optimal flow control
  • Maximum differential pressures

For more information about Schubert & Salzer products contact Miller Energy, Inc. Call them at 800-631-5454 or visit their website at https://millerenergy.com.

The Design Principle of Segment Disc Control Valves


Figure 1.
The central throttle device of this control valve is two discs with segmented openings which slide on one another and seal against each other (Fig. 1). The segment discs are positioned vertically in the valve housing, facing the direction of flow. A moving disc is placed upon a rotationally fixed segment disc, the geometry of which determines the throughput capacity and characteristic curve. These two discs have the same number of segments and the moving disc is rotated via a push rod which is tangentially inserted. Consequently, the cross-section surface of the free segment passage changes when a control intervention is made.

Irrespective of the pending pressure differential, the moving segment disc is pressed onto the fixed disc via a spring pack- age. This ensures that the direction of flow is variable and that the valve can be installed in any desired location. Due to the fact that there are no metal seats with ring-shaped contact surfaces, no grooves will occur which can rapidly lead to leaks in traditional steam valves. Leakage ratios amounting to < 0.001% of the Kvs value are constantly achieved with the significantly less vulnerable surface seal.

Extremely robust segment disc valve from
Schubert & Salzer for steam distribution.
Thanks to this special design, segment disc valves are one of the few valves that are able to combine control precision and a high level of tightness, even in extreme conditions and which also experience hardly any wear.

The standard segment disc valves are available in finely graduated intervals of between DN 25 and DN 300 – and go up to DN 800 where necessary – in an intermediate flange design for nominal pressures up to PN 25. They can be used for media temperatures ranging between -60°C and +220°C (higher temperatures and nominal pressures are available on request). The robust valves have a rangeability of 60:1.

For more information, contact Miller Energy, Inc. by calling 800-631-5454, or visit their web site at https://millerenergy.com.

Miller Energy Expands Capabilities With New Valve Line

sliding gate valve with actuator
The sliding gate control valve is part of the Schubert & Salzer
product line. Image courtesy Schubert & Salzer.
Miller Energy is pleased to now represent, in the company's Pennsylvania office, Schubert & Salzer, a recognized innovator and manufacturer of high precision process flow control valves.

Schubert & Salzer specializes in precise control and stop valves for industrial fluid processing operations.
  • Sliding gate valves
  • Ball Sector Valves
  • Segment disc valves and segment disc orifices
  • Seat valves
  • Three-way valves
  • Sanitary valves
  • Pinch Valves
  • Manual valves
  • Positioners & controllers
  • Accessories to complement all products
With the expansion of its already wide range of common and specialized valve technologies, Miller Energy further solidifies its position as the go-to source for solutions to fluid process control challenges. Contact the Pennsylvania office for detailed product information. Share your challenges and leverage your process knowledge and experience with their product application expertise to develop effective solutions.