Grooved End Butterfly Valve

 Groove End Butterfly Valve is a dedicated fire service valve from Laux Valve, a professional valve manufacturer founded in 2011. This grooved soft-seat butterfly valve ranges DN50–DN300 (2"–12"), complying with AWWA C606, KSB2822 and GB5135.11 fire valve standards, with maximum 16Bar working pressure.
Grooved clamp connection enables fast, easy installation on fire grooved pipes. The ductile iron body with EPDM/NBR vulcanized disc delivers tight sealing for fire protection and HVAC water pipelines. All parts adopt ASTM standard materials, with ISO5211 top flange compatible with various actuators. Custom coating and actuator solutions are supported for worldwide fire engineering buyers.

Grooved End Butterfly Valve Manufacturer

Grooved Butterfly Valves for Fire Protection, HVAC & Water Pipeline Systems

Laux Valve manufacturesGrooved End Butterfly Valvesdesigned for fast, reliable installation in modern piping systems. Featuring grooved connections, these valves can be installed using mechanical grooved couplings without conventional flange bolting, helping simplify installation and maintenance. Grooved End Butterfly Valves are widely used infire protection systems, HVAC, water supply, cooling water, and industrial utility pipelines . Available with resilient seats, multiple body and disc materials, and manual or actuated operation, Laux provides flexible OEM solutions for distributors, contractors, and engineering projects.

What is a Grooved End Butterfly Valve?

A Grooved End Butterfly Valve , also called a Grooved Butterfly Valve , is a quarter-turn valve designed with grooved ends for connection to grooved piping systems.

Instead of using traditional flanges and multiple flange bolts, the valve connects to the pipeline through grooved couplings. This connection method allows faster installation, easier maintenance, and greater flexibility in confined mechanical rooms or complex piping systems.

The valve uses a rotating disc to control or isolate pipeline flow. A resilient seat provides sealing between the disc and valve body, while the grooved ends provide a compact and convenient connection to the piping system.

Grooved butterfly valves are particularly popular in fire sprinkler systems, HVAC systems, chilled water pipelines, commercial buildings, water treatment systems, and industrial utilities.

Grooved Butterfly Valve Working Principle & Key Features

How Does a Grooved Butterfly Valve Work?

The valve operates through a 90-degree quarter-turn mechanism.

When the disc rotates to the open position, fluid can pass through the valve with relatively low flow resistance. Rotating the disc toward the closed position gradually restricts the flow until the resilient seat contacts the disc and provides shut-off.

The grooved connection remains fixed to the pipeline while the valve can be operated through a handle, gearbox, electric actuator, or pneumatic actuator depending on the configuration.

Key Features

Grooved End Connection

The grooved ends allow the valve to connect directly to grooved piping systems using mechanical couplings, simplifying installation compared with traditional flanged connections.

Fast Installation

Grooved couplings can significantly reduce installation time because they require fewer components and less bolt tightening than conventional flange connections.

Compact Design

The compact butterfly valve structure requires relatively little installation space, making it suitable for mechanical rooms, HVAC systems, and building service pipelines.

Reliable Resilient Sealing

The resilient seat provides dependable shut-off performance and helps protect the sealing surface during normal operation.

Low Operating Torque

The optimized disc and seat design reduces operating resistance and allows efficient operation with manual handles, gearboxes, or actuators.

Easy Maintenance

Grooved connections allow easier valve removal and maintenance without extensive disassembly of the surrounding pipeline.

Grooved End Butterfly Valve Technical Data Sheet

Grooved End Butterfly Valve

Technical Specification

  • Size Range: DN50 - DN300 (2''-12'')
  • Design Standard: AWWA C606, KSB2822, GB5135.11
  • Grooved End Standard: AWWA C606, KSB2822, GB5133.11
  • Working Pressure: 16Bar
  • Test Standard: EN12266-1, ISO5258, API598
  • Top Flange: ISO5211

Material Specification

Part Material ASTM Standard
Body Ductile Iron A536Gr.65-45-12
Disc Ductile Iron+EPDM/NBR -
Shaft Stainless Steel -
Bushing FRP PTFE -

Dimensions

Grooved End Butterfly Valve Drawing & Dimension Sketch

*Other Special Material and Dimension Requested,Pls Contact us Directly

DN mm 50 65 80 100 125 150 200 250 300
inch 2 2-1/2 3 4 5 6 8 10 12
A 60 73 89 114 141 168 219 273 323
B 57 69 85 110 137 163 214 268 318
C 125 133 140 150 165 180 203 235 263
D 60 64 73 84 103 113 145 177 205
E 15.87 15.87 15.87 15.87 15.87 15.87 19 19 19
F 7.93 7.93 7.93 9.53 9.53 9.53 11.10 12.7 12.7
W 14 14 14 14 17 17 22 22 22
Grooved Butterfly Valve Applications & Comparison | Actuator Options

Grooved Butterfly Valve Applications

Fire Protection Systems

Grooved butterfly valves are widely used in fire protection piping because grooved connections allow fast installation and maintenance.

Typical applications include:

Fire sprinkler systems
Fire water pipelines
Standpipe systems
Fire pump systems
Building fire protection

HVAC Systems

Suitable for:

Chilled water
Cooling water
Heating water
Air-conditioning systems
District cooling

Water Supply

Used in:

Municipal water systems
Water treatment
Building water supply
Pumping systems

Industrial Applications

Grooved butterfly valves can also be configured for:

Industrial cooling water
Utility pipelines
Process water
Industrial HVAC
General fluid isolation

Why Choose a Grooved Butterfly Valve?

Compared with traditional flanged butterfly valves, grooved-end designs offer several practical advantages:

Feature Grooved Butterfly Valve Flanged Butterfly Valve
Connection Grooved coupling Flanges & bolts
Installation Fast More time-consuming
Maintenance Easy removal Requires bolt removal
Installation Space Compact More space required
Best Applications Fire / HVAC / Water General industrial
Pipeline Modification Flexible More complex

The main advantage is installation efficiency. For projects where speed, accessibility, and maintenance are important, a grooved connection can provide a significant practical benefit.

Grooved End vs Wafer Butterfly Valve

This is also an excellent SEO comparison module for the product page.

Grooved Butterfly Valve

Uses grooved ends and mechanical couplings. It is particularly suitable for fire protection, HVAC, and building service piping.

Wafer Butterfly Valve

Installed between two pipe flanges and secured with flange bolts. It is commonly used in water treatment and industrial pipeline systems.

Choose Grooved End Butterfly Valve when:

  • Fast installation is important
  • The pipeline uses grooved connections
  • The system is a fire protection or HVAC application
  • Easy maintenance is required

Choose Wafer Butterfly Valve when:

  • The pipeline uses conventional flanges
  • Space and cost are primary considerations
  • The project uses standard flanged piping

Actuation Options

Manual Handle

Suitable for small-diameter valves and applications requiring simple on/off operation.

Gear Operator

Recommended for larger sizes where higher operating torque requires mechanical assistance.

Electric Actuator

Suitable for automated valve operation and integration with building management or industrial control systems.

Pneumatic Actuator

Suitable for fast automated operation in industrial applications.

ISO 5211 Actuator Mounting

Laux Grooved End Butterfly Valves can be configured with an ISO 5211 mounting interface, allowing compatibility with various electric and pneumatic actuators.

This provides flexibility for:

  • Automated HVAC systems
  • Industrial process control
  • Remote valve operation
  • Building management systems
  • Fire protection monitoring

Manufacturing Excellence

Quality Control

Certification Quality Standard

100% Pressure Tested API598 ISO9001   CE  WRAS   ACS

What is a Grooved End Butterfly Valve?

A Grooved End Butterfly Valve is a quarter-turn valve designed with grooved connections on both ends. Instead of conventional flanges and bolts, the valve is connected to the pipeline using mechanical grooved couplings. This design provides fast installation, easy maintenance, and a compact connection for water, HVAC, fire protection, and industrial piping systems.

How does a Grooved Butterfly Valve work?

A Grooved Butterfly Valve controls pipeline flow by rotating a circular disc approximately 90 degrees. When the disc is parallel to the flow, the valve is open. When the disc rotates perpendicular to the flow, the resilient seat contacts the disc and provides shut-off.

What are the advantages of a Grooved End Butterfly Valve?

The main advantages include fast installation, compact construction, easy maintenance, and flexible pipeline connection. Grooved couplings require fewer installation components than traditional flanged connections, making these valves particularly suitable for projects where installation time and accessibility are important.

Where are Grooved Butterfly Valves commonly used?

Grooved butterfly valves are widely used in fire protection systems, HVAC systems, chilled water pipelines, water supply, wastewater treatment, commercial buildings, and industrial utility systems. The specific valve configuration should be selected according to the operating pressure, temperature, medium, and applicable project standards.

Are Grooved Butterfly Valves suitable for fire protection systems?

Yes, grooved butterfly valves are commonly used in fire protection piping because grooved connections allow efficient installation and maintenance. For fire protection projects, however, the valve must have the certifications and approvals required by the applicable local codes and project specifications.

What is the difference between a Grooved and Wafer Butterfly Valve?

A Grooved Butterfly Valve connects to grooved piping using mechanical couplings, while a Wafer Butterfly Valve is installed between conventional pipe flanges using bolts. Grooved valves are generally preferred where rapid installation and easy maintenance are important, while wafer valves are widely used in conventional flanged industrial and water pipelines.

What pipe connection is required for a Grooved Butterfly Valve?

A Grooved End Butterfly Valve requires compatible grooved pipe ends and grooved mechanical couplings. The groove dimensions and coupling type should match the valve and piping system. Always confirm the required groove standard and dimensions before ordering.

What body and disc materials are available?

Laux Grooved End Butterfly Valves can be configured with different materials according to the application. Typical body options include ductile iron, carbon steel, CF8, and CF8M stainless steel. Disc options may include nickel-plated ductile iron, CF8, CF8M, Duplex stainless steel, bronze, and aluminum bronze.

Can a Grooved Butterfly Valve be used for throttling?

A resilient seated butterfly valve can be used for basic flow regulation and throttling, in addition to on/off isolation. However, for precise flow control or severe throttling service, the valve type, disc design, pressure drop, and operating conditions should be evaluated by an engineer before selection.

How is a Grooved Butterfly Valve tested before shipment?

Laux valves undergo quality inspections that may include dimensional inspection, shell pressure testing, seat leakage testing, coating inspection, operating torque verification, and final visual inspection. The applicable test procedure and documentation can be specified according to the project requirements.

Does Laux Valve provide OEM Grooved Butterfly Valve solutions?

Yes. Laux Valve provides OEM and customized Grooved Butterfly Valve solutions for distributors, contractors, and industrial projects. Customization can include valve materials, seat materials, disc coatings, groove dimensions, operating devices, actuator configurations, body markings, logos, nameplates, and packaging according to customer and project requirements.
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