🦋 BUTTERFLY VALVE EXCELLENCE

Type-57P Butterfly Valves

Quarter-turn butterfly valves with equal percentage flow characteristics. Designed for both on/off and modulating service with moderate flow control. Good tolerance to suspended solids for versatile applications.

View Specifications
Type-57P Butterfly Valve

Premium Features

Engineered for reliability and performance

⚙️

316 Stainless Steel Stem

High-quality 316 stainless steel stem with full disc engagement for maximum durability and strength.

🔒

Full Seat Design

Full seat design eliminates gaskets, reducing maintenance and potential leak points.

🛡️

Overtightening Prevention

Built-in seat overtightening prevention protects the valve from damage during installation.

🔐

Lockout-Tagout Ready

Lever handle with molded padlock provision and 2 molded valve body tag holes for safety compliance.

📊

Position Indicator

Highly visible 0° to 90° position indicator with 19 fine adjustment locking positions.

🔄

ISO 5211 Compatible

ISO 5211 F07 – F14 bolt circle on top flange for easy actuator mounting.

Spherical Disc Design

Advanced spherical disc design ensures optimal sealing and flow characteristics.

💧

Non-Wetted Stem

Non-wetted stem and body design isolates components from media for extended life.

Plasgear™ Operator

Reliable Plasgear™ operator for smooth and consistent operation.

Key Advantages

🎯

Dual Service

Suitable for both on/off and modulating service applications with equal percentage flow control.

🌊

Solids Tolerance

Good tolerance to suspended solids, suitable for various water treatment applications.

🔧

Easy Maintenance

Gasket-free design and accessible components simplify maintenance procedures.

🛡️

Safety Features

Integrated lockout-tagout provisions ensure compliance with safety standards.

📐

Wide Size Range

Available in sizes from 1-1/2" to 14" to accommodate various applications.

🔄

Versatile Actuation

Compatible with manual, pneumatic, and electric actuation options.

Technical Specifications

Sizes Available

  • 1-1/2" (38.1mm)
  • 2" (50.8mm)
  • 3" (76.2mm)
  • 4" (101.6mm)
  • 6" (152.4mm)
  • 8" (203.2mm)
  • 10" (254mm)
  • 12" (304.8mm)
  • 14" (355.6mm)

Body Materials

  • PVC (Polyvinyl Chloride)
  • CPVC (Chlorinated PVC)
  • PP (Polypropylene)
  • PVDF (Polyvinylidene Fluoride)

Seat Materials

  • EPDM (Ethylene Propylene)
  • FKM (Fluoroelastomer/Viton)
  • Nitrile
  • Chemical resistant options

Disc Materials

  • PVC (Polyvinyl Chloride)
  • CPVC (Chlorinated PVC)
  • PP (Polypropylene)
  • PVDF (Polyvinylidene Fluoride)

Stem Features

  • 316 Stainless Steel
  • Full disc engagement
  • Non-wetted design
  • Polypropylene stem retainer

Flow Control

  • Equal percentage characteristics
  • Moderate flow control
  • Quarter-turn operation
  • 19 locking positions

Actuation Options

Multiple actuation solutions for every application

⚡ Electric Actuation

  • Series 19 On/Off
  • Series 19 Failsafe
  • Series 19 Modulating
  • Series 19 Modulating Failsafe
  • Series 10
  • Series 92
  • Series 94
  • Tandem Electric

💨 Pneumatic Actuation

  • Standard pneumatic actuators
  • Failsafe options available
  • Tandem pneumatic configurations
  • ISO 5211 mounting compatibility

🔧 Manual Operation

  • Lever handle standard
  • Plasgear™ operator option
  • Lockout-tagout provisions
  • Position indicator included

Certification & Compliance

✓ NSF-61 Certified

Certified for use with potable water systems

Ideal Applications

Isolation Valves
Control Valves
Chemical Processing
Water Treatment
Water Features
Fountains
Aquariums
Landfills
Swimming Pools
Power Plants
Mining
Transportation

Professional Flow Control

Download datasheets, dimensional guides, and complete specifications

Get Documentation