3
KPTI011-EN rev
201
-0
-1
Please visit OPW’s website: www.opwglobal.com for further information
INSTALLATION
3. INSTALLATION
The inlet and seal for these self-service nozzles are as follows:
Nozzle
Inlet
OT300 models
1” Gas (1”-11 BSPP)
In compliance with ISO 228-1
OTA-300 models
BNA-300 models
All O-rings are suitable for use in LPG environments at stated operating temperature.
Adaptor
Inlet
Outlet
OT321
3/4” Gas female
1” Gas male
1. Make sure that the correct size sealing O-rings are mounted on the male fitting (1” Gas or 3/4” Gas) according to the fitting
and O-ring manufacturers instruction. It’s recommended to use a Buna (NBR) rubber compound specified for use with LPG,
and all compressor oils including synthetic oils. An O-ring with durometer from 70-90 Shore “A” is preferred. OPW provides
proper O-rings with all new nozzles and adaptors.
2. Only connect LPG nozzles to certified hoses according to EN1762.
3. Turn off pumping system, follow good safety practices. Lock and tag out system during installation and repair of fueling
nozzles.
4. Make sure that all sealing surfaces on nozzle and hose are clean, smooth and free from other containments.
5. Check O-ring inside the end of the nozzle and end of hose. O-rings can not be torn, knicked, twisted or have any other
discontinuous feature.Both O-rings must be replaced after each disassembly. Make sure you lightly lubricate them before
installation. Use greasing compatible with LPG.
6. The nozzle hose connection should be tightened according to the following:
Nozzle type
Type of wrench
Torque required
OT300 models
38 mm (1½”)
27 Nm to 40 Nm (20 ft-lbs to 30 ft-lbs)
OTA-300 models
BNA-300 models
1” Gas (1”-11 BSPP)
3/4” Gas (3/4”-14 BSPP)
Adaptor OT321