CLA-VAL 694-01, Установка, эксплуатация и обслуживание

Страница: 5 / 35

Combination Pressure Reducing and
Surge Control Valve
Typical Application
Schematic Diagram
Item Description
1 100-01Hytrol (Main Valve)
2 X58C Restriction Assembly
3 CRD Pressure Reducing Control
4 CRL Pressure Relief Control
Optional Features
Item Description
A X46A Flow Clean Strainer
B CK2 (Isolation Valve)
C CV Flow Control (Closing)*
D Check Valves with Isolation Valve
F Remote Pilot Sensing
P X141 Pressure Gauge
S CV Speed Control (Opening)
V X101 Valve Position Indicator
Y X43 "Y" Strainer
*
The closing speed control (optional) on this valve should
always be open at least three (3) turns off its seat.
High Pressure
Isolation Valve
Isolation Valve
Gauge
Gauge
Zone A
Zone C
Zone B
On-Off
Remote Control
Valves
CLA-VAL 94-01BY/694-01BY
Combination Pressure Reducing and
Surge Control Valve
On-Off
Remote Control
Valves
Reduced
Pressure
Reduced
Pressure
Reduced
Pressure
• Sensitive and Accurate Pressure Control
• Easy Adjustment and Maintenance
• Tamper Resistant
• Optional Check Feature
• Fully Supported Frictionless Diaphragm
The Cla-Val Model 94-01/694-01 Combination Pressure Reducing and
Surge Control Valve automatically reduces a higher inlet pressure to a
steady lower downstream pressure, regardless of changing flow rate
and/or varying inlet pressure. This valve is an accurate, pilot-operated
control valve capable of holding downstream pressure to a pre-
determined limit. When downstream pressure rapidly exceeds the
pressure setting of the pressure reducing control pilot, the surge pilot
(CRL) will open quickly to prevent a rapid pressure rise downstream.
If a check feature is added, and a pressure reversal occurs, the
downstream pressure is admitted in the main valve cover chamber
closing the valve to prevent return flow.
Should the downstream pressure
suddenly increase above the setting of
the pressure reducing control due to on-
off operation of two or more downstream
systems, the Surge Control tracks rapidly
enough to prevent high pressure surges
from entering any of the downstream
systems, when any one of the
downstream systems is rapidly closed off.
The typical combination pressure
reducing and surge control valve station
uses Model 94-01BY/694-01BY to control
surges in downstream piping as remote
control valves change from one
downstream zone to another. Surge
Control is set approximately 10 psi above
Pressure Reducing Control to prevent
high pressure surge entering other
downstream zones.
94-01
MODEL
(Full Internal Port)
694-01
(Reduced Internal Port)
Distributed By: M&M Control Service, Inc. www.mmcontrol.com/claval-index.php 800-876-0036 847-356-0566