BODY SIZE
OUTLET PRESSURE RANGE
COLOR
MAXIMUM DIFFERENTIAL PRESSURE
DN
NPS
bar
psig
bar d
psid
15, 20
1/2, 3/4
0.2 to 0.5
2 to 8
Blue
1.0
15
0.4 to 1.7
5 to 25
Silver
2.7
40
0.7 to 3.4
10 to 50
Green
6.9
100
2.4 to 6.9
35 to 100
Red
9.6
140
5.2 to 8.6
75 to 125
Red/Yellow
11
160
25, 40 full port
40 x 25
1, 1-1/2 full port
1-1/2 x 1
0.2 to 0.5
2 to 8
Blue
1.0
15
0.4 to 1.7
5 to 25
Silver
2.7
40
1.0 to 4.8
15 to 70
Green
6.9
100
1.7 to 6.2
25 to 90
Red
8.6
125
2.4 to 6.9
35 to 100
Green/Yellow
9.6
140
5.2 to 8.6
75 to 125
Red/Yellow
11
160
50 and 80
2 and 3
0.7 to 1.7
10 to 25
Silver
3.4
50
1.0 to 3.4
15 to 50
Green
5.2
75
1.7 to 4.1
25 to 60
Red
5.2
75
Table 3.
Maximum Differential Pressures
Table 4.
Temperature Capabilities
SEAT TYPE
DIAPHRAGM MATERIAL
O-RING MATERIAL
TEMPERATURE RANGE
°C
°F
Metal
(Stainless Steel)
Ethylene Propylene (EPDM)
EPDM
-28 to 135
-20 to 275
SST
Polytetrafluoroethylene (PTFE)/Fluorocarbon (FKM)
(1)
-6 to 204
20 to 400
PTFE/Fluorocarbon (FKM)
PTFE/Fluorocarbon (FKM)
-6 to 204
20 to 400
Soft
(PTFE/Stainless Steel)
EPDM
EPDM
-28 to 65
-20 to 150
SST
PTFE/Fluorocarbon (FKM)
(1)
-6 to 65
20 to 150
PTFE/Fluorocarbon (FKM)
PTFE/Fluorocarbon (FKM)
-6 to 65
20 to 150
Soft
(Polyether Ether Ketone
(PEEK)/Stainless Steel)
EPDM
EPDM
-28 to 135
-20 to 275
SST
PTFE/Fluorocarbon (FKM)
(1)
-6 to 204
20 to 400
PTFE/Fluorocarbon (FKM)
PTFE/Fluorocarbon (FKM)
-6 to 204
20 to 400
1. O-ring material is PTFE for the DN 15 and 20 / NPS 1/2 and 3/4 sizes. Temperature range is the same.
STANDARD BACKPRESSURE REGULATOR
WITH ELASTOMERIC DIAPHRAGM
19
18
17
L
11
12
14
13
16
24
23
15
8
9
5
7
3
2
1
S1
T-HANDLE OPTION
18
22
VACUUM PROTECTION OPTION
7
3
10
4
8
9
Figure 1.
Type SR8 Sanitary Regulator Assembly Drawing
APPLY LUBRICANT (L) AND SEALANT (S)
(1)
:
L = ANTI-SEIZE LUBRICANT
S1 = THREADLOCKER MEDIUM/HIGH STRENGTH SEALANT
1. Lubricant and sealant must be selected such that they meet the temperature requirements.
Type SR8
3
