NIBCO INC. Butterfly Valves, 800 Series Sure Seal®

The superior butterfly valve with the most corrosion resistant standard disc and stem for the chemical and food processing industry. 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 percent 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

The BTSV-SB series in-line closed-loop sample valve system is engineered to effectively collect representative sample of hazardous process media. The dead space free design can be installed in both horizontal and vertical piping thus allowing the media to constantly flow through the valve and around the conical spindle. Sample bottles either open top or sealed with septums can be directly attached beneath the valve to facilitate the sampling process.

• Direct representative samples from the process piping without requiring flushing
• Size range 1” to 6” (DN 25 to DN 150)
• 100 percent bubble tight shutoff and zero stem leakage tested per the API 598 specifications
• Economical field replaceable components
• Available with manual operators, lockable spring to close hand-levers and pneumatic actuators
• Temperature rating: -4° F to 400° F (soft seated)
• Valves available to mount in ANSI 150# and 300# flanges

• ISO 5211 mounting flange allows direct mounting of actuators, eliminating costly automation hardware
• Separate lined ball and stem allows the ball to float, preventing side loading which creates stem leaks
• Standard take out dimensions allows the Series 100 valve to replace any standard ball, plug or gate valve
• Additional metal-to-metal body joint prevents possible leakage from temperature changes or line stresses - damage to the seal can not be caused by over tightening
• Series 100 valve can be used in service ranging from full vacuum up to 250 psi

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.

• Non-wetted, 360 degree. 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

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 PTFE 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