T75 Air Relays
The Type 75 relay uses signal pressure to accurately control output pressure over a wide range of flow and supply pressure variation. Under varying flow conditions output pressure is maintained by use of an aspirator tube, which adjusts the air supply valve opening in accordance with the flow velocity. A balanced supply valve, utilizing a rolling diaphragm, makes the relay virtually immune to changes in supply pressure. Maintenance is simple due to the unit construction, and the relay can be serviced without removing it from the line. Signal to output pressure ratios of 1:1, 1:2, 1:4 and 1:6 are available. Maximum output is 150 PSIG(10.3 BAR).
Features:- Simplified maintenance
- Relay can be serviced without removal from the line
- Signal to output pressure ratios of 1:1, 1:2, 1:4 and 1:6
- Maximum output is 150 PSIG (10.3 BAR)
- Temperature Range -40˚F to +200˚F
- Volume Boosting
- Valve Motor Loading
- Low temperature applications
Port Size
Type 75
1/4", 3/8"
NPT, BSPP, BSPT
Type 75H
1/4", 3/8", 1/2"
NPT, BSPP, BSPT
1/4", 3/8"
NPT, BSPP, BSPT
Type 75H
1/4", 3/8", 1/2"
NPT, BSPP, BSPT
Maximum Supply Pressure (psi)
250 PSIG (17.2 BAR)
Air Consumption
<12 SCFH (5.7 LPM)
Connection
NPT
Pilot Operated
No
Model
P75
Product Description
T75 Air Relays
Application(s)
Industrial
Exhaust Capacity (scfm) @ 5 psid
Type 75
6 SCFM (170 LPM)
@ 10 PSIG (0.69 BAR)
above a 20 PSIG
(1.4 BAR) setpoint
Type 75H
15 SCFM (425 LPM)
@ 10 PSIG (0.69 BAR)
above a 20 PSIG
(1.4 BAR) setpoint
6 SCFM (170 LPM)
@ 10 PSIG (0.69 BAR)
above a 20 PSIG
(1.4 BAR) setpoint
Type 75H
15 SCFM (425 LPM)
@ 10 PSIG (0.69 BAR)
above a 20 PSIG
(1.4 BAR) setpoint
Series
Volume Booster Series
Flow Rate (scfm)
40 SCFM (1150 LPM)
@ 20 PSIG (1.4 BAR)
signal and 100 PSIG
(6.9 BAR) supply
@ 20 PSIG (1.4 BAR)
signal and 100 PSIG
(6.9 BAR) supply
Accuracy (% of span, typ.)
< 2% (1:1)
Sensitivity
1/4" H2O (6.4mm)
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