Shavo
Vayu Intermediate Series - (20) ( G 1/4 , G 3/8 , G 1/2)
features
  • Shavo's VayuTM Series Intermediate Range Pressure Regulator Diaphragm operated, respond to flow demand and line pressure changes efficiently
  • Positive valve sealing, large passages & operating to give free air flow
  • Large size low torque knob to adjust pressure make it designers' first choice
MODEL SR20
Parameters Specifications
Pipe Threads G 1/4, 3/8, 1/2 Parallel (F) - Standard
BSPTr. / NPT - Optional
Type Relieving diaphragm - Standard
Non-Relieving diaphragm - Optional
Body Material Al. Alloy die-cast - Standard
Adjustment Non-rising plastic knob - Standard
Metal "T" Handle - Optional
Maximum Inlet Pressure 300 psig (21bar)
Max. Operating Temp. (ambient) 80ºC
Regulated secondary outlet
pressure (spring range) and
recommended pressure gauge
ranges available in psig (bar)
Spring Range Gauge Range
6-60 psi (0.40 - 4.00 bar) 0-60 psi (0 - 4 bar)
12-125 psi (0.87- 8.75 bar) 0-150 psi (0 -10 bar)
15-150 psi (1.00 - 10.0 bar) 0-220 psi (0 -16 bar)
Gauge size 40 mm OD
Gauge Port size Rc 1/8 BSP Tr.
Gauge connection Back
Standard Nominal Flow rate at 10 bar (150 PSI) Inlet pressure 6 bar (87 PSI) set pressure and a drop of 1 bar (14.5 PSI) from set G1/4 85 scfm (40 dm3/sec) CV (1.60)
G 3/8 190 scfm (89 dm3/sec) CV (3.58)
G 1/2 320 scfm (150 dm3/sec) CV (6.03)
  G 3/4 360 scfm (169 dm3/sec) CV (6.79)
Mounting Bracket Optional
Panel mounting Standard - Available
Size Flow Range (psi) Operation Model
G 1/4 85 scfm (40 dm3/sec) 12-125 psi Relieving SR20K-2G-RNMN
G 3/8   190 scfm (89 dm3/sec) 12-125 psi Relieving SR20K-3G-RNMN
G 1/2 320 scfm (150 dm3/sec) 12-125 psi Relieving SR20K-4G-RNMN
OPTION SELECTOR
 
Sample Model Number
S R 2 0 K
-
2 G
-
R N M N
 
   
Position
0 1 2 3 4
-
5 6
-
7 8 9 10
 
   
0
   
S = Shavo
   
1
Product
R= Regulator
 
2 3
Series
20 = "Vayu"-3/8" Basic
 
4
Pipe Size
K = Knob Type (Nitrile Elastomers)
E = Knob Type (EPDM Elastomers)
V = Knob Type (Viton Elastomers)
T = T Handle Type (Nitrile Elastomers)
F = T Handle Type (EPDM Elastomers)
W = T Handle Type (Viton Elastomers)
 
5
Size
 
2 = 1/4"
3 = 3/8"
4 = 1/2"
 
6
Port Thread
  Main Port Gauge Port
A NPT BSPT
B BSPT BSPT
G BSP BSPT
N NPT NPT
J Japanese PT
 
7
Relief
R = Relieving
N = Non-Relieving
 
8
Gauge
N = No Pr. Guage
G = With Pr. Guage
 
9
Sec. Pr. Range
F = 6 - 60 psi (0.4 - 4 bar)
L = 12 - 125 psi (0.87 - 8.75 bar)
M = 15 - 150 psi (1.0 - 10.0 bar)
 
10
Mounting &
Accessories
N = No Mounting Bracket
B = Wall Mounting Bracket Fitted
L = With ‘L’ Type Bracket
 
 
Note: Panel mounting nut is Std.
on all SR20 units.
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