Identical to those of the OS2 (NTAOS2) except for:
Type BM
BMS
BM 1 BM 2 162 71 27 or 17 236 315
for 1 BMS for 2 BMS Diaphragm Diaphragm Piston Bellows Bellows
Max travel for the associated valve
Dimensions (mm) ABC 191 185 214 212 233
211 205 234 232 253
83 36 36 36 36
85 mm
Weight (kg) 4.7 4.7 2.6 1.2 2.3 2.4 2.8
B46
For an OSD2 with one BMS add the weight of the BMS to that of the BM 1. For an OSD2 with two BMS add the weight of the two BMS to that of the 2 BM
Mechanism Box Assembly OSD2 BMS1
Item Description
1 2 3 4 5
Mechanism box Machined mechanism box Cover O-ring BS ring Box / Connecting part O-ring Sub-assembly mechanism BMS / Mechanism box O-ring BS ring for BMS
Non-connectable Connectable Contact
Plastic vent with screen Link for tube 8/10 Box exit
OSD2 BMS2D
181 166 181 167 144 338 144 339 144 670 461 178 144 671 181 041 142 931 461 150
Mechanism box for 1 BMS
1/4 NPT 1/2 NPT Mechanism box for 2 BMS
Nota :
•
See (NTAOS2)
The position of the travel stop (diagram B49a) depends on the type of equipment and it’s size, positions A or B according to the max. travel of the valve: A = 75 to 85 mm travel, B = 60 to 70 mm travel
•
BMS1 See (NTAOS2) BMS2D The safety manometric box BMS2D consists of a BMS1 and a spacer (code: 144 673 (item 6 - diagram B49b))
Detection (possible configurations) Activator 1 BMS BMS1 BMS1 2 BMS BMS2D
Releasing screw Hook Releasing screw Releasing screw Hook
Max. only Min. only Max. & Min. Active
Neutral
Active
Neutral
Active
Active
Active
Active
Active
Neutral
Neutral
Neutral
Active
Active
Nota : in the case of a 2 BMS assembly, the BMS1 does not have a mini. hook.
Interventions on the BM : the cover is held by 4 unremovable screws
Pass the lead wire throught the head of the 2 screws