R-Series - Resilient Seal Butterfly Valves

Product Brand: Solent & Pratt

Proven record of reliability for both simple and arduous applications


  • Shutoff: Both directions to API 598
  • Geometry: Single or double offset valve available
  • Quality Assurance: Certified by Lloyds to ISO 9001
  • Sizes: 2" (80mm) NB to 84" (2100mm)
  • Body styles: Double Flanged, Wafer Lugged and Wafer Flangeless
  • Stem: External anti-blowout device to API 609 optional
  • Pressure ratings: ANSI 125#, 150# and 300# ratings on request

Resilient Sealed Valves are suitable for isolation and flow control applications and have a proven record for reliability over the past 40 years for application in hydrocarbon service, seawater cooling systems, offshore. Proven record of reliability onshore and marine fire mains systems, desalination plants and power plant installations. The ease and flexibility of material selection enables both simple and arduous applications alike to be within the capability of this valve series.

Valves can be supplied with manual, electric, pneumatic or hydraulic operator. Fail-safe systems for emergency operation are also available.

Specifications

A Resilient Seal with Bi-directional Shut-off

The valve is a bi-directional tight shut-off device incorporating a resilient seal mechanically retained around the periphery of the valve disc. The seal is available in various types of elastomers, the selection being dependant on the valve duty and working pressure and temperature. The seal seats against a metal seating surface machined into the body of the valve.

  • Quality Assurance Certified by Lloyds to ISO 9001
  • Certified Firesafe by Lloyds to DOT Rule 54 App.D for use in fire water mains offshore and marine installations
  • Tight shut-off in both directions to API 598
  • Field replacement resilient disc seal
  • ANSI 125#, 150# and 300# rating
  • Single or double offset valve geometry available
  • Low seating and unseating torques
  • Body designs: Double Flanged, Wafer Lugged and Wafer Flangeless
  • Flanges to suit any British, American or continental flange standards including ANSI, API, MSS, BS, PN and ISO
  • Actuation via manual gearbox, pneumatic, electric or hydraulic actuators
  • Materials available to NACE requirements
  • External anti-blowout device to API 609 optional
Theory of Operations

Bi-Directional Shut-off device

The valve is a bi-directional tight shut-off device incorporating a resilient seal mechanically retained around the periphery of the valve disc. The seal is available in various types of elastomers, the selection being dependent on the valve duty and working pressure and temperature. The seal seats against a metal seating surface machined into the body of the valve. Positive shut-off is achieved without excessive interference between seat and seal ensuring maximum seal life and low seating and unseating torques.

Positive shut-off is achieved without excessive interference between seat and seal ensuring maximum seal life and low seating and unseating torques.

Features and benefits
Feature Description
Type Resilient sealed bi-directional tight shut-off device
Markets Hydrocarbon service, seawater cooling systems, offshore, onshore and marine fire mains systems, desalination plants and power plant installations.
Seals Bronze, Stainless steel, Duplex, Super Duplex, Monel
Shafts Stainless steel, Super Duplex, Monel
Seal Available in various types of elastomers, the selection being dependant on the valve duty and working pressure and temperature
Seat Metal seating surface machined into the body of the valve
Replacement seats available as an option
Materials Cast Iron and SG Iron, Carbon steel, 316 Stainless steel, Duplex Stainless steel, Monel, Incoloy, Hastelloy B & C, Titanium. All materials available to NACE requirements
Shutoff Bi-directional to API 598
Closed Seal Tight shut off in both directions to API 598
Firesafe Certified Firesafe by Lloyds to DOT Rule 54 App.D for use in fire water mains offshore and marine installations
Actuation Via manual gearbox, pneumatic, electric or hydraulic actuators
R-Series - Resilient Seal Butterfly Valves
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