Product Description; Topworks Identification; Bonnet Description; Valve Diaphragm Identification - ITT Engineered Valves 903 Installation, Operation And Maintenance Manual

3 Product Description

3 Product Description

3.1 Topworks identification

Model number
Code
903
903S
913
913S
963
963S

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.
6
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
Handwheel Operated Valves (903, 913, 963) Installation, Operation, and Maintenance Manual