OPERATING PRINCIPLE : Gas enters through inlet, passes through ball mechanism to the outlet side. Because of “O” ring seals used on the floating ball, sealing attains 100% shut off. The operation can be only achieved through Allen key or operating with spanner.
CONSTRUCTION :
Model
NV 8R10- NV 25R10
Model
NV 32R 50- NV 50R50
Model
NV 8R10- NV 25R10
Model
NV 32R 50- NV 50R50
Housing
Mild Steel Plated
Mild Steel with
Nickel plating
Ball
Stainless Steel
Stainless Steel
Ball Seal
High Nitrle "O" ring
PTFE
Control Shaft Seal
High Nitrle "O" ring
PTFE with
Vition "O" ring
Temperature
-15°C to +60 °C
-20°C to +70 °C
End
Connection
Screwed to
BSP (F) / NPT (F)
PTFE with
Vition "O" ring
Pressure
Gas : 1bar
Air : 4bar
Water : 16bar
Gas : 1bar
Air : 16bar
Water : 40bar
VOLUMETRIC FLOW DIAGRAM :
SPECIFIC GRAVITY :
Natural Gas
0.62
Town Gas
0.45
LP Gas
1.56
Air
1.0
APPLICATION : For shutting off gas as described in DVGW code of practice G 260/ 1. These products are applicable on technical and commercial gases like Natural Gas, LPG, Bio Gas, Butane, Propane, and Air etc.
SPECIFICATIONS :
Model No.
Size
Maximum
Pressure
Bar
Dimensions
Weight
Kg
Inches
mm
L1
H2
NV 8 R 10
1/4
8
1
48
22
0.08
NV 10 R 10
3/8
10
1
45
22
0.07
NV 15 R 10
1/2
15
1
55
26
0.10
NV 20 R 10
3/4
20
1
63
37
0.21
NV 25 R 50
1
25
5
72
44
0.38
NV 32 R 50
1 1/4
32
5
106
60.5
0.90
NV 40 R 50
1 1/2
40
5
133
66.5
1.10
NV 50 R 50
2
50
5
133
74.5
1.80
Model No.
Size
Dimensions
Weight
L
H1
H2
ØD
Inches
mm
mm
mm
mm
mm
Kgs.
NVH 25 R 40
1
25
43
80
90
50
0.30
NVH 40 R 40
1 1/2
40
54
107
117
60
0.60
NVH 50 R 40
2
50
58
134
144
70
1.00
Note:
Technical specifications details & dimensions are subject to change without prior notice.
Dimensions in the table are approximate subject to final confirmation by AVCON.
