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Product Description
Topworks identification
Model number
Code
903
903S
913
913S
963
963S
Bonnet description
Non-Sealed bonnet
The non-sealed bonnet has a weep hole that indicates a diaphragm failure by allowing process
fluid that accumulates in the bonnet to pass through the hole.
Sealed bonnet
The sealed bonnet uses a special "V-notch" vent plug, which permits leak detection.
Figure 1: Weep hole and V-notch vent plug
Valve diaphragm identification
Diaphragm tab codes
All diaphragm materials and physical properties are batch traceable via permanent codes
molded into the diaphragm tabs. The molding date, grade of diaphragm, and size provide
traceability to original batch records.
Handwheel Operated Valves (903, 913, 963) Installation, Operation, and Maintenance Manual
Designed and Manufactured by ITT
Description
Cast iron bonnet with rising stem and travel stop
Cast iron sealed bonnet with rising stem and travel stop
Stainless steel bonnet with rising stem and travel stop
Stainless steel sealed bonnet with rising stem and travel stop
PAS plastic bonnet with rising handwheel and travel stop
PAS plastic sealed bonnet with rising handwheel and travel stop
Product Description
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