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P.C. Engineering Corporation
Crane Centerline VIA/RS Butterfly Valve

Overview

The Crane Centerline Series VIA/RS is a concentric butterfly valve designed for reliable shut-off and control in demanding industrial processes. With a soft seat design and only two components in contact with the medium (disc and body lining), this valve delivers permanently gas-tight sealing in both flow directions while minimizing corrosion risk.

The valve features a replaceable body lining with a reinforced back-up ring that prevents displacement under vacuum or high flow conditions. The elastic seat material is vulcanized onto the back-up ring, ensuring stable performance even in aggressive service environments. Over 70,000 units are currently installed across power generation facilities and sugar refineries worldwide.

Crane Centerline VIA/RS butterfly valves are engineered for maintenance-free operation with self-lubricating DU bearing bushes. The blow-out proof shaft design and ISO 5211 mounting flange allow direct actuator mounting without additional brackets, enabling easy field conversion between manual and automated operation.

Key Features

  • Concentric soft seat design with permanently gas-tight closure in both directions
  • Only 2 parts in contact with medium – disc and replaceable body lining
  • Blow-out proof shaft with integrated shaft lock
  • Self-lubricating DU bearings for maintenance-free operation
  • Reinforced back-up ring prevents seat displacement under vacuum
  • ISO 5211 standardized mounting flange for direct actuator adaptation
  • Available in 3 closing pressures: 3.5 bar, 10 bar, and 16 bar
  • DVGW gas approval and marine certifications (Lloyds, DNV, ABS)

Specifications

ParameterValue
Size RangeDN 40 – DN 1200
Pressure RatingPN 6, PN 10, PN 16, ANSI 150
Temperature Range-34°C to +150°C (-29°F to +302°F)
Face-to-FaceEN 558-1, Series 20 (DIN 3202-K1)
TightnessDIN 3230-T3, Leakage Rate 1
Mounting FlangeISO 5211
Shaft EndDIN 3337 square (DN 50–300)
Body MaterialsCast Iron (GG 25), SG Iron (GGG 40), Stainless Steel, Cast Carbon Steel
Shaft MaterialChromium Steel / Chromium Nickel Steel
Body StylesWafer, Wafer with centering lugs, Lug-type, Flange body
Quality AssuranceISO 9001
CertificationsCE (PED 97/23 EG), DVGW, Lloyds Register, DNV, ABS

Applications

Crane Centerline VIA/RS butterfly valves are suitable for a wide range of industrial applications:

- Power Generation – Cooling water, condensate, and auxiliary systems - Chemical & Petrochemical – Process isolation and control for corrosive media - Sugar & Paper Industry – High-temperature process lines - Water Treatment – Drinking water, sewage, and purification plants - HVAC Systems – Hot water, chilled water, and air-conditioning circuits - Steel & Cement Plants – Flue gas desulphurization, compressed air - Marine & Shipbuilding – Certified for marine vessel applications - Gas Systems – DVGW-approved for gas service - Vacuum Systems – Tested and approved for vacuum applications

Product Images

Crane Centerline VIA/RS Butterfly Valve
Centerline Butterfly Valve Assembly
VIA/RS Valve in Industrial Application
Valve Cross-Section and Components
Exploded View of Valve Parts
Wafer Body Configuration
Wafer Body with Centering Lugs
Lug-Type Body Configuration

Frequently Asked Questions

Get a Quote

Contact PC Engineering for pricing, availability, and technical support for Crane Centerline Series VIA/RS Butterfly Valves. Call us or fill in our inquiry form — our engineers will respond within 24 hours.

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