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.

Product Features

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
Seat	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