• Pilot Operated Regulator SR57
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High Flow Series - (57) ( G 1 1/2 , G 2)
features
  • Shavo's' Pilot operated ‘Slave Pressure Regulator can be installed at any pilot in the compressed air system without regard to accessibility ensuring accurate pressure regulation over a wide range of air flows upto 2000 cfm
  • Conventional or Feedback Pilot Regulators to operate the ‘Slave regulator can be installed in the most conventional location
  • External Metallic parts meet NACE standard MR-0175*
  • CE, ATEX, EAC Ex (CUTR 12), EAC (CUTR 10) approved
  • SIL3 capable as per IEC 61508
  • All External parts are NACE MR-0175* approved

    (*National Association of Corrosion Engineers MR-0175 defines requirements for sulphide stress cracking resistant materials used in oilwells and other corrosive environments.)
MODEL SR57
Parameters Specifications
Fluid Compressed Air
Pipe Sizes 1½”, 2”
Port Thread BSP - Standard
BSPT, NPT - Optional
Max. Inlet Pressure 30 bar (450 psi)
Max. Operating Temperature (Ambient) +80°C
Material of Construction Stainless Steel as per AISI 316L
Body, Bonnet
Internal Parts:
External Parts:
 SS 316L with NACE compliance (MR 0175)
SS 316L/ SS 304
SS 316L with NACE compliance (MR 0175)
Diaphragm Assembly Synthetic Rubber without PTFE - Standard
Elastomers Low Temp. Nitrile (LNBR)  - 60°C to +80°C
EPDM - 35°C to +120°C
Fluorocarbon (Viton-FKM) - 20°c to +180°C
Standard Nominal Flow Rate at 10 bar (150 psi) inlet pressure 6 bar (87 psi) set pr. and a drop of 1 bar (14.5 psi) from set 1½” - 1415 scfm (668 dm³/sec)
2” - 1890 scfm (891 dm³/sec)
CV Value 1½” - (26.69)
2” - (35.66)
Type Relieving - Standard
Non Relieving - Optional
Pressure Adjustment With the help of a Pilot Regulator either standard or Feedback
Gauge Port (2 nos.) 1/4” BSPT (Fe) - Standard
1/4” NPT (Fe) - Optional
Pressure Gauge (scale) Kg/cm2 (PSI) - Standard (For Domestic Market)
Bar (PSI) - Standard (Export)

Note :
1) Pressure gauge will be SS 2” dia 1/4” BC but will not be to NACE specification
2) Pressure gauge will not have the CE, EAC, SIL3 and NACE MR 0175 approval
3) PM Nut, Mounting Bracket, Grub Screw will not have NACE MR 0175 approval

11-4SNR
Size Flow Range psi Operation Model
1½” NPT 1415 scfm (668 dm3/sec) 0 - 8.75 KG/CM2 Relieving       SR57-BA-01X
2” NPT  1890 scfm (891 dm3/sec) 0 - 8.75 KG/CM2 Relieving       SR57-CA-01X
OPTION SELECTOR
 
Sample Model Number
S R 5 7
-
C G
-
0 1 X
-
R 3 7
-
M
-
X X X
-
X X X
   
Position
0 1 2 3
-
4 5
-
6 7 8
-
9 10 11
-
12
-
13 14 15
-
16 17 18
   
0
   
S = Shavo
   
1
Product
R = Pilot Operated SS Regulator
 
2 3
Series
57 = 2” Basic High Flow
 
4
Port Size
B = 1 1/2"
C = 2
 
5
Port Thread
  Main Ports Gauge Ports
A NPT BSPT
B BSPT BSPT
G BSP BSPT
N NPT NPT
 
6 7
 
  Low Temp. Nitrile Elastomer EPDM Elastomer VITON Elastomer
Rel Non Rel Rel Non Rel Rel Non Rel
No Gauge 04 14 01 11 [02] [12]
With Pressure Gauge (with ATEX approved)
 25 35 22 32 [23] [33]
 
8
 
X = Standard (No Spring)
 
PILOT REGULATOR DETAILS
9 10 11
 
R27 = Conventional Pilot model SR27 1/4”
R37 = Conventional Pilot model SR37 1/4” (Std.)
R77 = Conventional Pilot model SR77 1/4”
11-4SNR (SS) = Conventional Pilot 11-4SNR (hex headed)
 
12
Spring Range Pilot Regulator
[A] = 0.07 to 0.70 bar (1.0 -10 psi)
C = 0.21 to 2.10 bar (3.0 - 30 psi)
E = 0.35 to 3.50 bar (5.0 - 50 psi)
F = 0.40 to 4.00 bar (6.0 - 60 psi)
K = 0.70 to 7.00 bar (10.0 - 100 psi)
L = 0.86 to 8.60 bar (12.5 - 125 psi)
M = 1.00 to 10.0 bar (15.0 - 150 psi)
*[S] = 1.75 to 17.5 bar (25.0 - 250 psi)
 
 
13 14 15
Test / Approval
A 0 0 ATEX
A 0 1 UKEX
A 0 2 UKCA
A 0 3 ATEX, UKEX, EAC Ex,UKCA
A 0 4 ATEX, UKEX, EAC Ex
A 0 5 ATEX, UKEX, UKCA
A 0 6 ATEX, UKEX, EAC Ex
B 0 0 ATEX, CE
B 0 1 ATEX, CE, UKEX, EAC Ex, UKCA
B 0 2 ATEX, CE, UKEX, EAC Ex
B 0 3 ATEX, CE , UKEX, UKCA
B 0 4 ATEX, CE, UKCA, EAC Ex
B 0 5 ATEX, CE, EAC Ex
C 0 0 CE
C 0 1 CE, UKEX, EAC Ex, UKCA
C 0 2 CE, UKEX, EAC Ex
C 0 3 CE, UKEX, UKCA
C 0 4 CE, EAC Ex, UKCA
C 0 5 CE, EAC Ex
D 0 0 ATEX, EAC
D 0 1 ATEX, EAC, UKEX, EAC Ex, UKCA
D 0 2 ATEX, EAC, UKEX, EAC Ex
D 0 3 ATEX, EAC, UKEX, UKCA
D 0 4 ATEX, EAC, EAC Ex, UKCA
E 0 0 EAC
E 0 1 EAC, UKEX, EAC Ex, UKCA
E 0 2 EAC, UKEX, EAC Ex
E 0 3 EAC, UKEX, UKCA
E 0 4 EAC, EAC Ex, UKCA
F 0 0 ATEX, SIL3
F 0 1 ATEX, SIL3, UKEX, EAC Ex, UKCA
F 0 2 ATEX, SIL3, UKEX, EAC Ex
F 0 3 ATEX, SIL3, UKEX, UKCA
F 0 4 ATEX, SIL3, EAC Ex, UKCA
F 0 5 ATEX, SIL3, EAC Ex
G 0 0 CE, EAC
G 0 1 CE, EAC, UKEX, EAC Ex, UKCA
G 0 2 CE, EAC, UKEX, EAC Ex
G 0 3 CE, EAC, UKEX, UKCA
G 0 4 CE, EAC, EAC Ex, UKCA
H 0 0 CE, SIL3
H 0 1 CE, SIL3, UKEX, EAC Ex, UKCA
H 0 2 CE, SIL3, UKEX, EAC Ex
H 0 3 CE, SIL3, UKEX, UKCA
H 0 4 CE, SIL3, EAC Ex, UKCA
H 0 5 CE, SIL3, EAC Ex
J 0 0 EAC, SIL3
J 0 1 EAC, SIL3, UKEX, EAC Ex, UKCA
J 0 2 EAC, SIL3, UKEX, EAC Ex
J 0 3 EAC, SIL3, UKEX, UKCA
J 0 4 EAC, SIL3, EAC Ex, UKCA
K 0 0 CE, EAC, SIL3
K 0 1 CE, EAC, SIL3, UKEX, EAC Ex, UKCA
K 0 2 CE, EAC, SIL3, UKEX, UKCA
K 0 3 CE, EAC, SIL3, UKEX, EAC Ex
K 0 4 CE, EAC, SIL3, EAC Ex, UKCA
L 0 0 ATEX, EAC, SIL3
L 0 1 ATEX, EAC, SIL3, UKEX, EAC Ex, UKCA
L 0 2 ATEX, EAC, SIL3, UKEX, EAC Ex
L 0 3 ATEX, EAC, SIL3, UKEX, UKCA
L 0 4 ATEX, EAC, SIL3, EAC Ex, UKCA
M 0 0 ATEX, CE, SIL3
M 0 1 ATEX, CE, SIL3, UKEX, EAC Ex, UKCA
M 0 2 ATEX, CE, SIL3, UKEX, EAC Ex
M 0 3 ATEX, CE, SIL3, UKEX, UKCA
M 0 4 ATEX, CE, SIL3, EAC Ex, UKCA
N 0 0 ATEX, CE, EAC
N 0 1 ATEX, CE, EAC, UKEX, EAC Ex, UKCA
N 0 2 ATEX, CE, EAC, UKEX, EAC Ex
N 0 3 ATEX, CE, EAC, UKEX, UKCA
N 0 4 ATEX, CE, EAC, EAC Ex, UKCA
[O] [0] [0] Other customer special requirement if Any
P 0 0 ATEX, CE, EAC, SIL3
P 0 1 ATEX, CE, EAC, SIL3, UKEX, EAC Ex, UKCA
P 0 2 ATEX, CE, EAC, SIL3, UKEX, EAC Ex
P 0 3 ATEX, CE, EAC, SIL3, UKEX, UKCA
P 0 4 ATEX, CE, EAC, SIL3, EAC Ex, UKCA
Q 0 0 ATEX, EAC Ex
R 0 0 EAC Ex
R 0 1 EAC Ex, UKEX, UKCA
R 0 2 EAC Ex, UKCA
S 0 0 SIL3
S 0 1 SIL3, UKEX, EAC Ex, UKCA
S 0 2 SIL3, UKEX, EAC Ex
S 0 3 SIL3, UKEX, UKCA
S 0 4 SIL3, EAC Ex, UKCA
V 0 0 ATEX, CE, SIL3, EAC Ex
V 0 1 ATEX, CE, SIL3, EAC Ex, UKEX, UKCA
V 0 2 ATEX, CE, SIL3, EAC Ex, UKEX
V 0 3 ATEX, CE, SIL3, EAC Ex, UKCA
X X X STANDARD UNITS WITHOUT ANY CERTIFICATE / APPROVAL
Y 0 0 ATEX, SIL3, EACEx
y 0 1 ATEX, SIL3, EACEx, UKEX, UKCA
Y 0 2 ATEX, SIL3, EAC Ex, UKEX
Y 0 3 ATEX, SIL3, EACEx, UKCA
Z 0 1 CE, SIL3, EAC Ex, UKEX, UKCA
Z 0 2 CE, SIL3, EAC Ex, UKEX
Z 0 3 CE, SIL3, EAC Ex, UKCA
 
16 17 18
Compliance
X X X Standard Unit Wthout any Complinace
A 0 1 RoHS 3 Compliance
A 0 2 REACH Compliance
A 0 3 Copper Free (Only Applicable Aluminium Version)
A 0 4 RoHS3, REACH Compliance
A 0 5 RoHS3, REACH, Copper Free (Only Applicable for Aluminium Version)
A 0 6 RoHS3, Copper Free (Only Applicable for Aluminium Version)
A 0 7 REACH, Copper Free (Only Applicable for Aluminium Version)
   
Note : Option shown in the [ ] bracket are special, Please contact Sales HQ/Manufacturing.
             * [S] option available with Hex headed pressure adjustment only.
© 2022, Shavo Norgren (India) Pvt. Ltd.
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