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Type 1805P
Specifications
Body Size and End Connection Style
2 NPT
Maximum Relief (Inlet) Pressure
50 psi (3,4 bar) over relief pressure setting or
150 psig (10,3 bar), whichever is lower
Relief Set Pressure Ranges
See Table 1
Pressure Registration
External
Wide-Open Flow Coefficients
C
: 900 (without outlet piping); C
g
1. Relief pressure plus maximum allowable build-up over setting.
2. The pressure/temperature limits in this instruction manual and any applicable standard or code limitation for this relief valve should not be exceeded.
RElIEF SET PRESSuRE
10 to 18 psig
(0,69 to 1,2 bar)
18 to 30 psig
(1,2 to 2,1 bar)
30 to 100 psig
(2,1 to 6,9 bar)
MAIn VAlVE SPRIng,
PART nuMBER,
SET PRESSuRE
AnD COlOR,
RAngE, PSIg (bar)
PSIg (bar)
For set pressures
(0,69 to 1,2)
up to 30 (2,1)
1F826927052
Pink
(1,2 to 2,1)
For set pressures
over 30 (2,1)
30 to 100
1D751527022
(2,1 to 6,9)
Unpainted
1. Set pressure is defined as the pressure at which the pilot exhaust starts to bubble (discharge).
2. Crack pressure is the inlet pressure at which the main valve starts audible flow.
3. Inlet pressure buildup over the set pressure to achieve wide-open capacity.
2
(1, 2)
(2)
: 23.7; C
: 38
v
1
Table 1. Type 6358B Relief Set Pressure Ranges
COLOR
Green
Unpainted
Red
Table 2. Pilot Information
SET PRESSuRE
PSIg (bar)
10
(0,69)
10 to 18
15
(1,0)
18
(1,2)
18
(1,2)
18 to 30
25
(1,7)
30
(2,1)
30
(2,1)
40
(2,8)
50
(3,4)
60
(4,1)
70
(4,8)
80
(5,5)
90
(6,2)
100
(6,9)
IEC Sizing Coefficients
X
: 0.91
T
F
: 0.44
D
F
: 0.89
L
Pilot Control Line and Vent Connections
1/4 NPT
Temperature Capabilities
nitrile (nBR): –20° to 180°F (–29° to 82°C)
Fluorocarbon (FKM): 0° to 300°F (–18° to 149°C)
Approximate Weight
13 pounds (6 kg)
SPRIng WIRE DIAMETER
0.120-inch
(3,0 mm)
0.142-inch
(3,6 mm)
0.192-inch
(4,9 mm)
BuIlD-uP OVER
SET PRESSuRE TO
,
(1)
BEgIn OPEnIng
MAIn VAlVE
,
(2)
PSIg (bar)
0.8
(0,05)
0.8
(0,05)
0.8
(0,05)
0.9
(0,06)
0.9
(0,06)
0.9
(0,06)
1.5
(0,10)
1.5
(0,10)
1.5
(0,10)
1.5
(0,10)
1.7
(0,12)
1.7
(0,12)
1.7
(0,12)
2.0
(0,14)
(2)
SPRIng FREE lEngTh
2.12-inch
(53 mm)
2.12-inch
(53 mm)
2.19-inch
(55 mm)
BuIlD-uP OVER
PRESSuRE DROP
SET PRESSuRE
TO Fully OPEn
PRESSuRE TO
MAIn VAlVE
,
RESEAT PIlOT,
(3)
PSIg (bar)
1.1
(0,08)
1.1
(0,08)
1.1
(0,08)
1.3
(0,09)
1.3
(0,09)
1.3
(0,09)
2.2
(0,15)
2.2
(0,15)
2.2
(0,15)
2.2
(0,15)
2.5
(0,17)
2.5
(0,17)
2.5
(0,17)
2.5
(0,17)
PART nuMBER
1B986027212
1B788327022
1K748527202
BElOW SET
PSIg (bar)
1.0
(0,07)
1.0
(0,07)
1.0
(0,07)
1.0
(0,07)
1.0
(0,07)
1.0
(0,07)
1.0
(0,07)
1.0
(0,07)
1.0
(0,07)
1.0
(0,07)
1.0
(0,07)
1.0
(0,07)
1.0
(0,07)
1.0
(0,07)
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