Cla-Val 403 Series User Manual
Series 403

Specifications
Sizes
Globe: 1 1/2” - 24” flanged
Angle: 1 1/2” - 16” flanged
End Details
125 and 250 ANSI B16.1
Pressure Ratings
150 class - 250 psi Max.
300 class - 400 psi Max.
Temperature Range
Water: to 180
0
F. Max.
Materials
Main valve body & cover:
Ductile Iron ASTM A-536*
Cast Steel ASTM A216-WCB*
Naval Bronze ASTM B-61
Nickel Aluminum Bronze ASTM B148
Super Duplex Stainless Steel
Stainless Steel ASTM A743-CF-8M
Main valve trim:
Bronze ASTM B61
Monel
Stainless Steel 316
Pilot control system:
Cast bronze ASTM B61 with monel trim
Stainless Steel 316 Tubing & Fitting
*Internally & Externally Epoxy Coated
Pneumatically Operated Remote Control Valve
For Freshwater and Seawater Service
3
2
4
Schematic Diagram
Item Description
1
100-01 Hytrol (Main Valve)
2
X47A Ejector
3
100-02 Powertrol
4
CK2 Ball Valve
Optional Features
Item Description
A
X46A Flow Clean Strainer
F
Independent Operating Pressure
H
Drain to Atmosphere
• Single Seat with Resilient Disc Insures Tight Seal
• Simply Designed with Few Working Parts
• Quick Response to Remote Control
• Fully Supported Frictionless Diaphragm
• Leak-proof Service Assured – No Packing Glands
• Single Tube Line Required for Control
• Opens Wide for Minimum Flow Resistance
The Cla-Val 403 Series Remote Control Valve is used where “on-off” control
is required. Pressure signals from a remote control “open or close” a small
auxiliary valve installed on the main valve cover, which in turn opens or
closes the main valve. Only the small amount of fluid in the auxiliary valve
cover must pass through the remote control pilot in order to fully open or
close the larger main valve.
The Model 403 Series consists of a 100-01 Hytrol main valve and a small
Hytrol auxiliary valve. Both the main valve and the auxiliary valve are single-
seated, diaphragm operated globe type valves. Line pressure applied to
the auxiliary valve cover closes the main valve drip tight.
For Seawater Service use 100S/2100S or 100GS/2100GS Main Valve
Series 403
MODEL
403G-11A