Rotork Midland (UK) Product Range

AIR SERVICE UNITS 3500 / 3550 SERIES

Technical Data

Ports NPTM (BSP option available) : 1/4", 1/2", 3/4", 1”

Gauge Ports (BSP option available) : 1/8" NPT, 1/4" NPT (option available)

Relief/Vent Ports : 1/8" NPT (Fitted with bug screen)

Working Temperature : Ambient temperature -20ºC to +80ºC (-4ºF to +176ºF), Low temperature version -50ºC (-58ºF ) (optional)

Maximum Inlet Pressure :Manual drain - 20 bar (290 psi), Automatic drain - 17 bar (247 psi)

Regulated Pressure:0.50 to 2 bar (7.2 to 29 psi), 0.50 to 4 bar (7.2 to 58 psi), 0.50 to 8 bar (7.2 to 116 psi), 0.50 to 12 bar (7.2 to 174 psi)

Maximum Relief Flow : at 2 bar (29psi) secondary pressure 0.5cc/sec (0.03 cu in/sec)

Bowl Retention Capacity : 21cc (1.28cu ins)

Flow capacity : 10 bar (145 psi) inlet pressure,6 bar (87 psi) secondary pressure with 1 bar (14.5 psi) pressure drop 1/4" - 3720 L/min (130 SCFM), 1/2" - 6000 L/min (212 SCFM), 3/4" - 7800 L/min (274 SCFM), 1" - 7800 L/min (274 SCFM)

Cv (Kv) : 1/4" - 2.4 (34.0), 1/2" - 4.4 (63.0), 3/4" - 7.8 , 1" - 8.0 (120)(71.0)

Preferred Models

Model Number Description Weight kg (lbs)
2FRMSV**2A+ 1/4"NPT Filter regulator, manual drain 1.75 (3.86)
2FRASV**2A+ 1/4"NPT Filter regulator, automatic drain 2.05 (4.52)
4FRMSV**2A+ 1/2"NPT Filter regulator, manual drain 1.75 (3.86)
4FRASV**2A+ 1/2"NPT Filter regulator, automatic drain 2.05 (4.52)
6FRMSV**2A+ 3/4"NPT Filter regulator, manual drain 1.95 (4.30)
6FRASV**2A+ 3/4"NPT Filter regulator, automatic drain 2.25 (4.96)
8FRMSV**2 1”NPT Filter with manual drain 5.75 (12.7)
8FRMSV**2 1”NPT Filter with automatic drain 5.75 (12.7)