Type 78 - T78 High Flow Regulator
The Bellofram Precision Controls Type 78 is a high-flow pressure regulator designed for applications requiring substantial pneumatic flow together with accurate pressure control. It can deliver well over 200 SCFM, supports output pressure ranges up to 125 psig, and accepts supply pressure up to 400 psig. A Bellofram rolling diaphragm improves sensitivity and accuracy, while the balanced pintle helps minimize outlet-pressure changes caused by supply-pressure fluctuations. The Type 78 is suited to high-flow actuation, louvers, rollers and winders, control loops, calibration systems, and other OEM or industrial pressure-control applications.
Features:
- Rugged die-cast zinc and aluminum housings, pressure treated for use in harsh environments
- Port sizes of 3/8, 1/,2 3/4 and 1 NPT and BPST with 1/4 NPT gauges
- Five different pressure output ranges of up to 125 psig (8.6 BAR)
- Maximum supply pressure rated at 400 psig (27.6 BAR)
- Achievable flow rates of well over 200 SCFM
- Pipe or rail mounting capabilities
- High-flow Actuation
- High-flow Louvers
- Rollers and Winders
- High-flow Control Loops
- Calibration Loops
- Any OEM or Industrial Pressure Regulator Application Where a High Degree of Accuracy is Required
Size
3.82" X 3.82" X 7.5"
Maximum Supply Pressure
400 psig / 27.6 BAR
Pressure Ranges
0-2 psig, 0-10 psig,
0-30 psig,
0-60 psig, 0-125 psig
0-30 psig,
0-60 psig, 0-125 psig
Port Sizes
3/8", 1/2", 3/4", 1" NPT
Sensitivity
Less than 1" water column
Forward Flow Capacity
200 SCFM
Exhaust Capacity @ 5 psig (0.4 BAR) above setpoint
14 SCFM at 5 psi / 0.3 BAR above 20 psig / 1.4 BAR
set point (0-30 psig / 0-2.1 BAR range unit)
set point (0-30 psig / 0-2.1 BAR range unit)
Temperature Range
-40˚F (-40˚C) to 200˚F (93˚C)
Total Air Consumption @ Maximum Output
less than 12 SCFH at 125 psig / 8.6 BAR
output pressureq
output pressureq
Materials of Construction
Body: Die Cast Zinc
Bonnet: Die Cast Aluminum Alloy
Knob: Phenolic Plastic, Plated Steel
Diaphragms: Nitrile Elastomers with Dacron Fabric
Other Internal Materials: Brass, Stainless Steel, and Zinc
Bonnet: Die Cast Aluminum Alloy
Knob: Phenolic Plastic, Plated Steel
Diaphragms: Nitrile Elastomers with Dacron Fabric
Other Internal Materials: Brass, Stainless Steel, and Zinc
Effect of Supply Pressure Variation on Outlet Pressure
2.1 psig
Effect of Changes in Flow on Regulated Pressure
less than ± 0.35 psig / 0.02 BAR for a supply
variation of 100 psig / 6.9 BAR
variation of 100 psig / 6.9 BAR
Mounting Options
Pipe or Panel
Filter Output Pressure Range(s)
0-2 PSIG,
0-10 PSIG,
0-30 PSIG,
0-60 PSIG,
0-120 PSIG,
0-150 PSIG
Filter Maximum Supply Pressure
400 PSIG
Filter Port Size
3/8" NPT
Filter Flow Capacity
101-200 SCFM
Find Your Part Number
Not sure? Call for help. Phone: 304-387-1200
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