ITT Engineered Valves 903, Инструкция по установке, эксплуатации и обслуживанию

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3 Product Description
3.1 Topworks identification
Model number
Code Description
903 Cast iron bonnet with rising stem and travel stop
903S Cast iron sealed bonnet with rising stem and travel stop
913 Stainless steel bonnet with rising stem and travel stop
913S Stainless steel sealed bonnet with rising stem and travel stop
963 PAS plastic bonnet with rising handwheel and travel stop
963S PAS plastic sealed bonnet with rising handwheel and travel stop
3.2 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.
Bonnet
weep hole
V-notch vent plug
(Sealed bonnet only)
Figure 1: Weep hole and V-notch vent plug
3.3 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.
3 Product Description
6 Handwheel Operated Valves (903, 913, 963) Installation, Operation, and Maintenance Manual