Honeywell V4730B - User Manual

PRODUCT DATA
® U.S. Registered Trademark
© 2004 Honeywell International Inc.
All Rights Reserved
65-0275—2
V4730B/V8730B, V4750B/V8750B
Class A Double Block and Pressure
Regulating Safety Shutoff Valves
APPLICATION
The V4730B/V8730B, V4750B/V8750B Class A Double Block
Pressure Regulating Valves are used for pre-mix burner
control of gaseous fuels in gas-fired power burners,
atmospheric gas boilers, ovens, furnaces, incinerators,
roof-top units, makeup air units and other gas consuming
appliances.
FEATURES
• Class A double block safety shutoff valves for control
of pre-mix gaseous fuels in gas consuming appliances
in accordance with international standards.
• Provides safety shutoff and pressure regulation
control of main gas flow.
• Main body with two single-seat shutoff valves.
• Provides for mounting optional flanged pressure
switches.
• Closing time: < 1 second.
• Coils suitable for permanent energization.
• Screen (strainer) between inlet flange and main body.
• Various pressure tap points at main body available,
when no additional valves or pressure switches are
used.
• Plug connector according to DIN 43650, pre-wired with
36 in. (914 mm) leads, included.
• Adjustable maximum flow rate limiter (all models).
• Adjustable step opening pressure and opening timing
(V4750B/V8750B only).
• Replaceable pipe flange adapters included.
• First and second internal shutoffs can be
independently energized for intermittent pilot
applications.
• Position indication lamp for each valve stage.
V4750B/V8750B
V4730B/V8730B
Contents
Application ........................................................................ 1
Features ........................................................................... 1
Specifications ................................................................... 2
Ordering Information ......................................................... 2
Installation ........................................................................ 4
Adjustments and Final Checkout ...................................... 7
Operation .......................................................................... 9
Troubleshooting ................................................................ 10
Service Information .......................................................... 10

Honeywell V4730B Specifications