Knife Gate Valves - VL Series | Wey Valves | Full-Lug Stainless Steel
Knife Gate Valves - VL Series | Wey Valves | Full-Lug Stainless Steel

Knife Gate Valves - VL Series | Wey Valves

WEY VL Knife Gate Valve – Stainless Steel Full-Lug Design

The WEY VL series is a bidirectional full-lug isolation valve for corrosive liquids, slurry, viscous products and media containing suspended solids. The full-lug body supports installation between flanges and, under defined pressure limits, end-of-line service.

Technical Data

  • Nominal sizes: DN50–DN900

  • Operating pressure: up to 10 bar, depending on DN and actuator

  • Flange connections: ASME Class 150

  • Face-to-face dimension: MSS-SP81

  • Body material: cast 316 stainless steel

  • Gate material: 316 stainless steel, optionally hard chrome plated

  • Standard seat seal: Aflas

  • Stem or piston rod: stainless steel 430F

The mechanically retained circular seat provides bidirectional sealing. The transverse seal limits leakage to atmosphere and can be readjusted through lateral compression screws without removing the valve. The upper body geometry reduces solids accumulation around the gate.

Actuator Options

  • Handwheel

  • Bevel gearbox

  • Pneumatic cylinder

  • Hydraulic cylinder

  • Electric actuator

Actuator sizing must consider nominal diameter, differential pressure, solids content, operating frequency and required closing time.

Applications

Chemical effluent, bleaching agents, pulp, pastes, granular products, seawater, corrosive wastewater, syrups and beverage-processing lines.

FAQ

Can the VL be installed as an end-of-line valve?
Yes, subject to the applicable PED classification and the reduced allowable pressure specified for end-of-line operation.

Is it suitable for throttling?
The standard configuration is intended for full open or full closed isolation. Continuous throttling requires a dedicated control arrangement.

Standard (Options)
  • ANSI
Material (Options)
  • AISI 316 (Stainless Steel)
Pressure Rating (Options)
  • 150 lbs
Seat (Options)
  • Aflas (Metal seat)

Datasheet and documents

Description

With the optimized lug design of our VL Series, we give you the best of both worlds. It unites cost-saving design and the highest possible performance. Made of stainless steel as standard, it is often used in corrosive applications and, thanks to its 100% bidirectional bubble-tight shut off, offers the best possible customer confidence and satisfaction.

Characteristics

  • Nominal sizes: 50 – 900 mm
  • Material: Stainless steel, Special material
  • Pressure rating: 0 – 10 bar
  • Flange drilling: ANSI Class 150
  • Face to face dimension: MSS-SP81

Details

The robust metal yoke enables the optimal, simple assembly of mechanical or inductive limit switches. The yoke can be removed from one side. This makes it easier to access the mechanical parts.

A unique transverse seal, consisting of a transverse seal profile and packing compound, makes the body bubble-tight towards the atmosphere.

The robust metal yoke enables the optimal, simple assembly of mechanical or inductive limit switches. The yoke can be removed from one side. This makes it easier to access the mechanical parts.

The transverse seal can be repacked at any time and under full pressure using the lateral packing screws.

The robust metal yoke enables the optimal, simple assembly of mechanical or inductive limit switches. The yoke can be removed from one side. This makes it easier to access the mechanical parts.

Robust 4-post topwork for maximum load and a wide variety of actuator types.

The robust metal yoke enables the optimal, simple assembly of mechanical or inductive limit switches. The yoke can be removed from one side. This makes it easier to access the mechanical parts.

With its optimized gate geometry, accumulated media is pushed out of the gate guide and flushed out into the bore by the increased flow.

The robust metal yoke enables the optimal, simple assembly of mechanical or inductive limit switches. The yoke can be removed from one side. This makes it easier to access the mechanical parts.

In the closed end position, the gate is also mechanically supported.

Application Areas

Chemical and petrochemical industries

e.g. Viscous pastes, Granulates, Chemically contaminated waste water ...

Pulp and paper industry

e.g. Pulp Stock (Low to high density), Liquor (black, white, green), Chemical solutions, bleaching agents ...

Food and beverage

e.g. Syrups, juices and beverages, Cereal, vegetable, mash, etc., Processed fruits, Cheese powder, Cocoa beans ...

Water treatment

e.g. Seawater, Saltwater ...

Material Of Construction

PartStainless Steel
Body316 Stainless steel
Gate316 Stainless steel
SealAflas
TopworkCarbon steel
Stem / Piston rod430F

Other materials upon request

Corrosion Protection

TopworkTwo-layer wet coating
ScrewsStainless steel

Certificates

SIL 3 Certificate

EU Certificate CE Mark