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24 BONNETS FEATURES<br />
STANDARD BONNET FEATURES<br />
OPTIONAL BONNET FEATURES<br />
900 Series Bonnet<br />
<strong>Pure</strong>-Flo ® 900 series bonnets include Thermoplastic polyarylsulfone (PAS),<br />
stainless steel, bronze, white epoxy, Nylon and Kynar ® PVDF coated cast iron.<br />
The following features are supplied as standard:<br />
• “O” Ring Furnished<br />
• Adjustable Travel Stop<br />
• Protective Cap<br />
• Brass Stem Bushing<br />
• Visual Position Indicator<br />
• Permanent Lubrication<br />
• Cast Iron or Zinc Compressor<br />
• Cast/molded fingers or separate fingerplates internal to the bonnet, to support<br />
the diaphragm when exposed to high service line pressure.<br />
Thermoplastic PAS Bonnets<br />
The Thermoplastic bonnet is manufactured from PAS, polyarylsulfone, and<br />
serves as a universal bonnet based on the following inherent features:<br />
• Tested and process proven continuous maximum temperature is<br />
300°F (149°C) 1<br />
• PAS (polyarylsulfone) as well as all assembly components are FDA compliant<br />
• The Thermoplastic PAS material is inherently scratch and corrosion resistant<br />
• The PAS bonnet is ideally suited for typical cleaning and sterilization protocols<br />
• The fasteners are enclosed in the bonnet housing to eliminate any area for<br />
fluid entrapment during washdown procedures in sizes 1/2"–3" (DN 15–80)<br />
• Autoclavable models are available in sizes 1/2"–4" (DN 15–100)<br />
• The entire line of PAS bonnets is available in sizes 1/2"–4" (DN 15–100)<br />
• Molded fingers internal to the bonnet support the diaphragm when<br />
exposed to high service line pressure<br />
Sealed Bonnets<br />
A sealed bonnet provides a secondary containment area for process fluids if<br />
the diaphragm should ever fail. A “V” notch vent plug is provided to serve as<br />
a leak detector and prevents the release of process fluids into the atmosphere.<br />
In addition, the bonnet stem is automatically upgraded to stainless steel and<br />
an EDPM gasket is provided where fingerplates exist. Sealed bonnets are an<br />
available option on all manual and automated valve assemblies.<br />
Hygienic Internals<br />
Hygienic Internals are available upon request and include:<br />
• Stainless Steel Stem and Roll Pin<br />
• Stainless Steel Fingerplate (when applicable w/ S.S. bonnets)<br />
• Bronze Compressor<br />
1 Refer to Product Data Sheet for clarification.
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