Masoneilan 78-80H & 08-80H Transfer Valves Instruction Manual
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© 2021 Baker Hughes Company. All rights reserved.
1. Overview
The
Model 78-80H
is a transfer valve combining a pilot valve of the floating ball type and three-port
valve into one unit and is a high-capacity three-way transfer valve of a set pressure regulating type.
The other
model 08-80H
, is the same as the 78-80H except that a pilot valve is not combined and is
the so-called three-way transfer valve. If several 78-80Hs are needed, one 78-80H can be installed,
connecting 08-80Hs to it by mating the pilot outlet pressure (“SIG.OUT”) on the 78-80H to “SIG” on the
08-80H to simplify piping and achieve transfer.
The structures of these models are shown on pages 8 and 9.
2.
Specifications
Item
Standard
Option
Maximum Operating
Pressure
Body
1.72 MPa
－
Signal
1.03 MPa
－
Set Pressure
100
～
700 kPa
－
Hysteresis
34 kPa or less
－
Cv Value
IN→OUT
4.5
－
OUT→EXH.
5.0
－
Connection
IN
、
OUT
、
EXH. Ports
Rc1/2
NPT1/2
SIGNAL Port
Rc1/4
NPT1/4
Operating Temperature Range
-30
～
+83°C
0
～
100°C
Housing Material
Aluminum Alloy
316L Stainless Steel
(1)
1. When the housing material is 316L stainless steels, the connections are NPT.
3.
Certifications
This instrument is certified in:
•
Azerbaijan (AzSERTCENTER)
•
Russian Federation (CU-TR Ex)
•
Armenia
•
Uzbekistan (UZSTANDART)
•
Belarus
•
China (China Ex)
•
Kazakhstan
•
and is also
ATEX compliant.
4. Numbering System
1
st
2nd
3rd
4th
5th
8
-
8 0
H
Suffix A
Suffix B
1
st
- 4
th
5
th
Suffix A
Suffix B
Product
Capacity
Housing Material
78-80
Set Pressure
Regulating Three-Way
Transfer Valve
H
High
Capacity Blank -30
～
83
℃
Blank
Aluminum Alloy
08-80
Three-Way
Transfer Valve
－
H
0
～
100
℃
-316L 316L Stainless Steel
(1)
