Installation – Flowserve UNA 23 User Manual
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1. Take care of correct position of installation. Name plate B must always be on top.
2. Take care of flow direction. The flow arrow is on the trap body.
3. Consider space required for opening trap. When the trap is installed a minimum space of at least
130 mm (DN 15-25) / 200 mm (DN 40, 50) is required for removing the cover J or V C.
4. Remove plastic plugs. They are only used as transit protection.
5. Clean socket-weld ends.
6. Arc-weld trap only manually (welding process 111 and 141 in accordance with ISO 4063).
Socket-Weld Traps
1. Take care of correct position of installation. Name plate B must always be on top.
2. Take care of flow direction. The flow arrow is on the trap body.
3. Consider space required for opening trap. When the trap is installed a minimum space of at least
130 mm (DN 15-25) / 200 mm (DN 40, 50) is required for removing the cover J or V C.
4. Remove plastic plugs. They are only used as transit protection.
5. Clean seating surfaces of both flanges.
6. Install steam trap.
Flanged Traps
1. Take care of correct position of installation. Name plate B must always be on top.
2. Take care of flow direction. The flow arrow is on the trap body.
3. Consider space required for opening trap. When the trap is installed a minimum space of at least
130 mm (DN 15-25) / 200 mm (DN 40, 50) is required for removing the cover J or V C.
4. Remove plastic plugs. They are only used as transit protection.
5. Clean threads of screwed sockets.
6. Install steam trap.
Screwed-Socket Traps
1 Take care of correct position of installation. Name plate B must always be on top.
2. Take care of flow direction. The flow arrow is on the trap body.
3. Consider space required for opening trap. When the trap is installed a minimum space of at least
130 mm (DN 15-25) / 200 mm (DN 40, 50) is required for removing the cover J or V C.
4. Remove plastic plugs. They are only used as transit protection.
5. Clean butt-weld ends.
6. Arc-weld trap only manually (welding process 111 and 141 in accordance with ISO 4063) or use
gas-welding process (welding process 3 in accordance with ISO 4063).
Butt-Weld Traps
Installation
The float traps can – depending on their body design – be installed in horizontal or vertical pipelines
with downward flow.
UNA 23h/v, UNA 25h/v, UNA 26h/v, UNA 27h