High performance butterfly valves are the result of years of experience in the design and manufacture of products for a variety of applications. Our valves are designed and tested to meet or exceed the most exacting standard of our industries. If you have pressure and need a valve to hold it, you can find it on our valve.

• Direct mount actuation
• Live loaded adjustable packing
• Uninterrupted gasket surface
• Available in different seat materials to 648° C
• One piece through shaft
• Welded disc pins
• Integrally cast disc stop
• A wide range of applications from vacuum to very high pressure service, and from low to very high temperature service
• Suitable for any severe process lines
• Excellent control characteristics that allow throttle control of flows
• Bubble-tight shut-off capability
• Optional "Blow-Out Proof Stem" per API 609
• Bi-Directional Service

The superior resilient-seated butterfly valve for industry on the market today.

• Stem is machined from 17-4 stainless steel to eliminate twisting
• Top plate is machined to standardized drilling pattern allowing manual handle kits, and actuation, interchangeability also available in ISO patterns
• Stem brushing composed of full strength, corrosion resistant ertalyte – absorb operator side thrust
• A third stem seal ensures absolute seal externally or internally for vacuum or pressure service
• Two patented O-seals give a sure secondary seal as the O-seal becomes part of the body and encircles the stem before entering the seat and disc area
• Seats feature EPDM, Viton® and Sure Seal's special abrasion resistant formulated blend of FDA approved Nitrile and 12 other standard compounds
• Hub and seat seals prevent product from attacking stem or body
• Lug-style body has drilled and tapped lugs which meet ANSI 125 and 150 flange standards
• Sure Lock disc screw assembly manufactured from 316 stainless steel - disc is machined to precision tolerance, allowing Sure Lock to be recessed in the face of the disc for extra locking ability
• Flange seal provides an absolute seal to all flanges within specifications
• Precision machined and hand polished disc for positive seal with contoured edges for lower operating torque

For HVAC/ATC, Chemical/Petrochemical Processing, Food and Beverage Industry, Power and Utilities, Pulp and Paper Industry

• Standard Double D Connection in sizes 2" thru 8", all others round and keyed - gives positive attachment for handle or actuator support and less friction
• Three standard teflon bushings furnish shaft support at three locations for positive shaft alignment and actuator support as well as less friction
• Standard ISO 5211 top plate accommodates all types of actuators; handles, gear operators, electric and pneumatic actuators
• Precision taper pins ensure positive, vibration proof, shaft to disc connection - easily field replaceable
• One-piece thru shaft ensures dependability and positive disc position, 416SS standard
• Smooth finished disc flats "mate" with seat flats to give a highly efficient seal; prevents leakage into the shaft area
• Seat face negates need for flange gaskets
• Phenolic backed seat is non-collapsible, stretch resistant, blow-out proof, and easily field replaceable
• Dead end service set screws located in 2 places on valves up to 6" at 3 and 9 o'clock positions, 4 places in larger vales at 2, 4, 8 and 10 o'clock positions - positioned on outer perimeter through valve body to phenolic backing
• Precision profile disc provides bubble-tight shut off and assures minimum torque and longer seat life
• Bonding of elastomer to phenolic backing ring protects against distortion, a common cause of shaft leakage

The 894 is geared to meet a multitude of applications and, with its user friendly design, disassembles in minutes for quick cleaning.

Whether powders, granules or pastes the Sure Seal 894 Series can handle the most demanding situations.

• Actuator support available for manual lever, double acting preumatic or spring return actuators
• Silicone Rubber Standard Seat. Other seats for your particular application are available
• 316 stainless steel disk/stem polished finish for ease of cleaning
• 316 stainless steel housing available in polished or satin finish
• Stainless steel machine screws
• Electropolished finish for best surface cleanliness and minimum resistance to flow
• Simple to remove and strip for cleaning particularly with quick release version
• Minimal size and weight for easy handling
• Suitable for use with vacuum and pressure
• Sterilization by autoclave
• Crevice free GMP acceptable design
• Ideal for powders, granules and pastes
• Gasket meeting FDA standard

The 895 Series Rotary Valve was designed to offer superior product control without hindering flow. Ideal for granules and powders which need to be dispensed uniformly in a variety of applications. Designed for a wide range of uses, the Sure Seal 895 Series offers quick disassembling for cleaning and servicing. A stainless steel satin finished body and mirror polished disk offers years of trouble free service while providing a truly sanitary rotary valve. Ideal anywhere a controlled flow of product is required, this valve uses no lubricants and is sterilizable by autoclaving.

• Extremely light and compact
• Stainless steel with silicone seal
• Built in accordance with G.M.P.standards
• Allows continuous feeding of product without obstructing product flow
• Holds pressure and vacuum with disk in closed position
• High temperature resistant
• Interchangeable with Sure Seal valves and 894 Series Sanitary Valves
• AISI 316 (DIN 1.4401) body, satin finished body, mirror polished upon request
• AISI 316L (DIN 1.4404) mirror polished rotor 6 lobes (8 upon request) rotor operated by reciprocating movement to introduce a uniform quantity of product
• No seal type O-Ring on the shafts
• Easy to disassemble, inspect, clean, available in a quick release configuration with clamp band

A cost effective answer to the Pharmaceutical Industry.

Sure Seal's Superior Encapsulated design results in total encapsulation of the seat and disc/stem, providing the ultimate in contamination free service. In addition, every Sure Seal valve is tested to 110% of full pressure rating!

• Stem is standard 255, a duplex stainless which is more corrosion resistant and almost twice as strong as standard 316 stainless steel, eliminating shaft twisting and water hammer damage
• Top plate is machined to standardized drilling pattern allowing manual handle kits, and actuation, interchangeability also available in ISO patterns
• Stem brushing composed of full strength, corrosion resistant ertalyte – absorbs operator side thrust
• A third stem seal ensures absolute seal externally or internally for vacuum or pressure service
• Two patented O-seals give a sure secondary seal as the O-seal becomes part of the body and encircles the stem before entering the seat and disc area
• Patented (PTFE) Teflon lined seats have superior design which extends Teflon through the shaft hole to back of seat, ensuring total protection through seat and seals to Teflon o-seal and shaft on back side of seat
• Hub and seat seals prevent product from attacking stem or body
• Lug-style body has drilled and tapped lugs which meet ANSI 125 and 150 flange standards
• Flange seal provides an absolute seal to all flanges within specifications
• Series 892 (left) Series 899 (right) - Schedule 80 - bubble tight shut off 100 psi on all full teflon or rubber seat, 150 psi on all other combinations - 50 psi bubble tight shut off available in all series.

Designed and engineered for demanding applications in corrosive, sanitary and ultra-pure processes. Unique benefits in design and a wide range of options allows the Sure Seal LBF lined butterfly valve to provide superior service to the chemical and industrial market. Our ISO 9001 quality system insures that each valve Sure Seal supplies exceeds your application expectations.

• Non-wetted, 360 deg. radially-loaded, elastometric energizer is engineered to provide uniform pressure to the outer circumference of the liner and disc, ensuring absolute bubble tight shut-off
• Unique, spherically-shaped disc and liner eliminates the axial cold flow and deformation problems typical of conventional lined butterfly valves, resulting in a reliable, maintenance-free, environmentally safe stem seal
• The disc swing is compatible with PTFE and other fluoropolymer-lined piping systems as well as other metallic, lined and non-metallic piping systems, resulting in the elimination of spacers during installation
• ISO 5211 mounting flange allows the direct mounting of actuators, eliminating hysteresis and costly automation hardware
• ProTef proprietary lining and molding technology features a minimum lining thickness of 3mm and was developed to provide long-term resistance to permeation, absorption, and swelling
• ProTef technology features superior joint, creep and vacuum resistance, especially at elevated temperatures
• LBF design features spherically-molded and machined, wide-liner sealing surfaces that are securely anchored within the faces of the valve body by a series of concentric serrations, resulting in the reduction of radial cold flow
• Robust body construction is designed to be as strong as the PN10/16 counter flanges to which it will fastened - eliminating deflection problems and resulting in improved flange sealing properties
• Polyester Polyeurathane powder coating for external corrosion protection
• Ideally suited for chlorine gas service