WaterTec Catalog 2020-Web

VALVE HOUSING (GALVANIZED
STEEL FOR 6” & 8” AND ANODIZED
ALUMINUM FOR 2”, 3”, & 4”)
PLASTIC CENTER BARRIER
STAINLESS STEEL
CENTER STUD
800
SERIES
CONTROL VALVES
INTERNAL CAGE
SLEEVE (SPECIAL
NATURAL RUBBER)
CAGE
PSI
800 SERIES CONTROL VALVES PRESSURE LOSS DATA
(VALVE FULLY OPEN)
bar
AS A HYDRAULICALLY OPERATED
SLEEVE-TYPE VALVE, THE 800
SERIES CONTROL VALVE IS
DESIGNED FOR VERSATILITY. THE
BASIC BODY CAN BE EQUIPPED
WITH SEVERAL DIFFERENT
OPTIONS FOR CONTROLLING
PRESSURE AND FLOW. IT’S ALSO
ENGINEERED FOR EXTREMELY
HIGH EFFICIENCY, RESULTING IN
LOW PRESSURE LOSS AND HIGH
FLOW CAPACITY.
PRESSURE LOSS
20.0
10.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
.70
.50
.40
.30
.20
2” (50 mm) valve
3” (80 mm) valve
4” (100 mm) valve
6” (150 mm) valve
8” (200 mm) valve
1.0
0.70
0.50
0.40
0.30
0.20
0.15
0.10
0.07
0.05
0.03
0.02
0.01
.10
30
8
40 50 60 90 100 150 200 300 400 500 600 800 1000 1500 2000 3000 4000 6000
10 20 30 40 50 60 80 100 200 300 400 500 600 800
m 3 /hr
GPM
FLOW RATE
MANUAL ON-OFF
ELECTRIC ON-OFF
PRESSURE CONTROL
RATE-OF-FLOW
ALL 800 SERIES VALVES
(EXCEPT 800P) ARE EQUIPPED
WITH A 3-WAY MANUAL ON-OFF
SELECTOR VALVE.
ADD A SOLENOID FOR ELECTRIC
ON-OFF CAPABILITY.
THE PRESSURE CONTROL REGULATOR
(“REDUCING” FOR DOWNSTREAM,
“SUSTAINING” FOR UPSTREAM) DIRECTS
WATER FLOW WHICH POSITIONS THE
SLEEVE DURING OPERATION.
ADD THE RATE-OF-FLOW
(MODEL D18) CONTROL TO
REGULATE THE FLOW RATE
DURING SYSTEM START UP.
OPEN — WATER PRESSURE IS
RELIEVED FROM THE SLEEVE CHAMBER,
ALLOWING THE VALVE TO OPEN.
CLOSED — UPSTREAM WATER IS
APPLIED TO THE OUTER SLEEVE CHAMBER,
THE SLEEVE BECOMES HYDRAULICALLY
BALANCED AND THE FLOW PASSAGE IS
CLOSED OFF BY THE SLEEVE PRESSING
AGAINST THE CENTER SEAT.
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