Type 75 - T75 Precision Relay
The Bellofram Precision Controls Type 75 is a precision pneumatic air relay that uses signal pressure to control output pressure across changing flow and supply conditions. Available signal-to-output ratios include 1:1, 1:2, 1:4, and 1:6, allowing the relay to reproduce or amplify pneumatic control signals for different system requirements. At the stated test condition, forward flow is about 40 SCFM and exhaust capacity is about 6 SCFM. A balanced supply valve, rolling diaphragm, and aspirator help maintain stable output, while serviceable construction supports applications such as volume boosting, gas-flow control, tensioning, clutch and brake control, roll loading, and cylinder control.
Features:
- Balanced Valve Design
- High Flow Capacity
- Field Serviceable
- Multiple Output Ratios
- Negative Biasing Option
- Can Be Disassembled and Serviced Without Removing from Line
- Gas Flow Control
- Tensioning Control
- Clutch and Brake Controls
- Volume Boosting
- Dancer Roll Loading
- Calendar Roll Loading
- Cylinder Bucking Control
- Valve Motor Loading
Port Sizes
1/4", 3/8", 1/2"
NPT, BSPP, BSPT
NPT, BSPP, BSPT
Sensitivity
1/4" H2O (6.4mm)
Maximum Signal
150 psig
(10.3 BAR)
(10.3 BAR)
Pressure Ranges
0-150 psig
(0–10.3 BAR)
(0–10.3 BAR)
Temperature Range
-40 to 200˚F
(-40 to 93˚C)
(-40 to 93˚C)
Forward Flow Capacity
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
Maximum Supply Pressure
250 psig (17.2 BAR)
Materials of Construction
aluminum, brass, carbon steel, stainless steel, acetal, nitrile
Supply pressure sensitivity
< 0.6 psig (0.01 BAR)
per 50 psig (1.4 BAR)
change in supply pressure
per 50 psig (1.4 BAR)
change in supply pressure
Ratio of Accuracy for 12 psig span
< 2% (1:1)
Total Air Consumption @ Maximum Output
<12 SCFH (5.7 LPM)
Exhaust Capacity @ 5 psig (0.4 BAR) above setpoint
6 SCFM (170 LPM)
@ 10 psig (0.69 BAR)
above a 20 psig
(1.4 BAR) setpoint
@ 10 psig (0.69 BAR)
above a 20 psig
(1.4 BAR) setpoint
Find Your Part Number
Not sure? Call for help. Phone: 304-387-1200
| Part Number | Description |
|---|
Related Products
