Type 70
Type 70BP
High Flow
Pressure Regulator
Features
High flow capacity - Up to 80 SCFM
•
(2266 LPM)
Responds quickly to minute changes
•
in downstream pressure
Dampening action of aspirator tube
•
maintains downstream pressure
Balanced supply valve minimizes the effect
•
of supply pressure changes
Bellofram’s Buna-N and polyester rolling
•
diaphragms are designed to give millions
of cycles
Honking and buzzing eliminated by action
•
of integral baffle and aspirator tube
Stack up construction can be
•
disassembled and serviced without
removal from air line
Type 70 Description
The Type 70 Regulator is specifically
designed for applications that require
substantial flow capacity and accurate
pressure controls. Flows of 80 SCFM
(2250 LPM) can be attained.
Downstream pressure can be set
within 0.25 in. (6.3mm) of water
column and is accurately maintained
under varying flow conditions with the
help of an aspirator tube which adjusts
the air supply in accordance with the
flow velocity. A balanced supply valve,
utilizing a rolling diaphragm, makes
the regulator virtually immune to
changes in supply pressure.
The Type 70 has a
rugged precision
die cast aluminum
housing, and is pressure-tested and chromate-
treated for internal corrosion resistance.
The regulator housing is finished with vinyl
paint which resists scratching, weathering
and other physical abuse.
Type 70 & 70BP
Pressure Regulator Series
Type 70BP Description
The Type 70 Back Pressure
Regulator functions as a high
flow, high precision pneumatic
relief valve with an adjustable
setpoint. The Type 70BP can be
used in place of a standard relief
valve to improve pressure control
while maintaining protection
against over pressurization, as in
supply pressure lines to instruments and other control devices.
It is most often used in conjunction with a diaphragm-operated
valve and bleed orifice as a compressor controller. Excess compressor
pressure is relieved through the regulator to actuate the intake restricting
valve. When the regulator is shut off, downstream air escapes through
the bleed orifice, allowing the restricting valve to open.
High Flow Back
Pressure Regulator
Features
High flow Capacity - Up to 50 SCFM
•
(1400 LPM)
Responds quickly to minute changes in
•
upstream pressure
Bellofram’s Buna-N and polyester rolling
•
diaphragms are designed to give
millions of cycles
Stack up construction can be disassembled
•
and serviced without removal from air line
Air Regulators
www.marshbellofram.com • 800.727.5646
Contact Us About
NACE Compatible
T70 Regulator
"No Yellow Metals"
25
Type 70: Regulated Pressure VS. Flow
PSIG BAR
90 6.2
80 5.5
70 4.8
60 4.1
50 3.4
40 2.8
Regulated PRessuRe
30 2.1
20 1.4
10 0.7
0 0
SCFM
LPM 0 300 575 850 1150 1400 1700 2000 2265
FoRwaRd Flow
10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0
0
Type 70 and 70BP Ordering Information
Part Number
Port Size
(NPT)
Set Point Range
BAR PSIG
960-129-000 1/4 0-0.1 0-2
960-174-000 3/8 0-0.1 0-2
960-162-000 1/2 0-0.1 0-2
960-130-000 1/4 0-0.7 0-10
960-131-000 3/8 0-0.7 0-10
960-163-000 1/2 0-0.7 0-10
960-089-000 3/8 0-2.1 0-30
960-090-000 1/4 0-2.1 0-30
T70
960-159-000 1/2 0-2.1 0-30
960-091-000 3/8 0.1-4.1 1-60
960-092-000 1/4 0.1-4.1 1-60
960-160-000 1/2 0.1-4.1 1-60
960-093-000 3/8 0.1-10.3 2-150
960-094-000 1/4 0.1-10.3 2-150
960-161-000 1/2 0.1-10.3 2-150
960-152-000 1/4 0.2-13.8 3-200
960-153-000 3/8 0.2-13.8 3-200
960-164-000 1/2 0.2-13.8 3-200
960-191-000 1/4 0-0.1 0-2
960-192-000 3/8 0-0.1 0-2
960-194-000 1/4 0-0.7 0-10
960-195-000 3/8 0-0.7 0-10
T70BP
960-197-000 1/4 0-2.1 0-30
960-198-000 3/8 0-2.1 0-30
960-200-000 1/4 0-4.1 0-60
960-201-000 3/8 0-4.1 0-60
960-203-000 1/4 0-10.3 0-150
960-204-000 3/8 0-10.3 0-150
Options
•= option is available
s = option is standard
Non-Relieving •
2
Knob
3
Sq. Head Adj. Screw
Epoxy Coating • •
5
Tapped Vent
6
Mounting Bracket • •
7
Pressure Gauge • •
8
Tamper Resistant Cover • •
9
Low Bleed •
10
Check Valve •
11
TYPE 70 TYPE 70BP
s
•
•
s
•
Type 70BP: Regulated Pressure VS. Flow
PSIG BAR
90 6.2
80 5.5
70 4.8
60 4.1
50 3.4
40 2.8
30 2.1
Regulated PRessuRe
20 1.4
10 0.7
0 0
SCFM
LPM 0 300 575 850 1150 1400 1700 2000
FoRwaRd Flow
10.0 20.0 30.0 40.0 50.0 60.0 70.0
0
Type 70 and 70BP Option Ordering Matrix
Replace last three digits of part number with digits from table below.
Option
2
Non-Relieving 002 032 052 062 072 082 092 112
3
Sq. Head Adj. Screw 003 053 063 073 083 103 113
5
Epoxy Finish 005 065 075 085 095 105 115
6
Tapped Vent 006 076 086 096 106 116
7
Mounting Bracket 007 087 097 107 117
8
Pressure Gauge 008 098 108 118
9
Tamper-Resistant Cover 009 109 119
10
Low Bleed 010 110
11
Check Valve 011
2 3 5 6 7 8 9 10 11
Options and Accessories
Non-Relieving
Used in applications where it is desirable to relieve pressure downstream
of the regulator, for some constant flow applications, and where the gas
flowing through the regulator must not escape at the regulator. Non-relieving regulators should not be used for low or no flow applications.
Corrosive Resistant Epoxy Finish
An epoxy paint applied to the body of the regulator exterior surfaces to
provide increased corrosion resistance.
Tapped Vent
Allows installation of plumbing to capture exhaust air.
Mounting Bracket
Steel (dichromate finish) bracket for side mounting.
Pressure Gauge
Dual scale 2 in. (50.8 mm) gauges. Ranges include 0-30 PSIG (0-200 kPa),
0-60 PSIG (0-400 kPa), 0-100 PSIG (0-700 kPa) and 0-160 PSIG (0-1100
kPa). When specified with regulator, the correct range will be supplied.
Tamper Resistant Cover
An aluminum tubular cover placed over a slotted head adjusting screw
and screwed onto the bonnet of the regulator with a wrench. Prevents
ordinary hand adjustments.
Low Bleed
Reduces steady-state air consumption by approximately 50%.
Check Valve
Allows quick dumping of output line pressure through the supply air line
when the supply is shut down.
Air Regulators
www.marshbellofram.com • 800.727.5646
27
Air Regulators
Sensitivity
Flow Capacity
Effect of Supply Pressure variation
(25 psig) on Outlet Pressure
Exhaust Capacity (5 above psig 20 psig set point)
Maximum Supply Pressure
Effect of Changes in Flow on Regulated Pressure
(100 psig/6.9 BAR Supply)
Output Pressure Ranges (Type 70)
Set Point Ranges (Type 70BP)
Total Air Consumption @ Maximum Output
Temperature Range
Port Size
Materials of Construction
Size
Weight
Preset Pressure
Tamper Resistant Cover
Mounting
Type 70 Type 70BP
1/4" (6.4 mm) Water Column 1/8" (3.2 mm) Water Column
40 (1113 LPM)
50 (1416 LPM)
or 80 SCFM (2266 LPM)
< 0.025 PSIG (1.7 BAR) N/A
4 SCFM (113 LPM) N/A
250 PSIG (17.2 BAR) 250 PSIG (17.2 BAR)
2.5 PSIG (0.2 BAR) over flow 50 SCFM (1416 LPM)
(3/8 NPT, 0-30 PSIG / 0-2.1 BAR range,
15 PSIG / 1 BAR set point)
0-2 PSIG (0-0.1 BAR)
0-10 PSIG (0-0.7 BAR)
0-30 PSIG (0-2.1 BAR)
1-60 PSIG (0.1-4.1 BAR)
2-150 PSIG (0.1-10.3 BAR)
3-200 PSIG (0.2-13.8 BAR)
N/A
from 1.0 to 12.5 SCFH (0.5-6 LPM) N/A
-40˚ to 200˚F (-40˚ to 93˚C) -40˚ to 200˚F (-40˚to 93˚C)
1/4, 3/8, 1/2 NPT, BSPT 1/4, 3/8, 1/2 NPT, BSPT
Body: Diecast aluminum with vinyl paint
Adjusting Screw: Plated steel
Trim: Plated steel, brass, acetal resin
Diaphragm: Buna-N with polyester fabric
Knob: Phenolic plastic
Spring: Music wire
3.0" X 3.0" X 6.0" (76 X 76 X 152 mm) 3.0" X 3.0" X 6.0" (76 X 76 X 152 mm)
1.41 lb. (0.6 kg) 1.5 lb. (0.7 kg)
No No
Yes Yes
Pipe, panel, or bracket Pipe, panel, or bracket
50 SCFM (1416 LPM)
N/A
N/A
0-2 PSIG (0-0.1 BAR)
0-10 PSIG (0-0.7 BAR)
0-30 PSIG (0-2.1 BAR)
0-60 PSIG (0-4.1 BAR)
0-150 PSIG (0-10.3 BAR)
Body: Diecast aluminum with vinyl paint
Adjusting Screw: Plated steel
Trim: Acetal, brass, plated steel, nitrile
Diaphragm: Buna-N with polyester fabric
Knob: Phenolic plastic
Spring: Music wire
Type 70 and 70BP Dimensional Drawings
26
800.727.5646 • www.marshbellofram.com
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