3. Specifications
To avoid malfunctions, product damage, accidents or serious injury,
install properly and DO NOT use this product outside the specification
range. Local regulations may restrict the use of this product to below the
conditions quoted.
CAUTION
Refer to the product nameplate for detailed specifications.
* Valve No. is displayed for products with options. This item is omitted from the nameplate when
there are no options.
Acceptable Operating Range
COS-21
COSR-21
5% of rated flow rate;
10% of rated flow rate for sizes 65 mm and larger
Minimum Adjustable
Flow Rate
1.35 – 2.1 MPaG
13.5 – 21 barg
190 – 300 psig
Minimum adjustable
pressure of 0.55 MPaG,
5.5 barg, 80 psig
Maximum pressure
differential of
0.85 MPa
8.5 bar
120 psig
COS-16
COSR-16
0.2 – 1.6 MPaG
2 – 16 barg
30 – 250 psig
COS-3
COSR-3
Model
1 MPa = 10 bar = 10.197 kg/cm
2
Primary Pressure
Range
0.1 – 0.3 MPaG
1 – 3 barg
15 – 45 psig
0.01 – 0.05 MPaG
0.1 – 0.5 barg
1.5 – 7 psig
Secondary Pressure
Adjustable Range
(All conditions
must be met)
5% of rated flow rate
Minimum adjustable
pressure of 0.03 MPaG,
0.3 barg, 5 psig
Pressure differential
between
0.07 – 0.85 MPaG
0.7 – 8.5 barg
10 – 120 psig
Within 10 – 84% of primary pressure
Model
Valve No.*
Maximum Operating
Temperature
Secondary Pressure
Adjustable Range
Production Lot No.
Nominal Diameter
Primary Pressure Range
English
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