
Type 50 & Type 50 NACE
Filter Regulator Series
Features
•
Superior regulation characteristics
•
Rugged, corrosion-resistant construction
•
Excellent stability and repeatability
•
Self-relieving
•
Integral, 40 micron, self cleaning filter
•
Low droop at high flow
•
Several mounting options
•
Meets ATEX
(Non-electrical certification)
Applications
The design of these regulators is well suited
to pilot-operated controllers, and instruments,
applications such as air chucks, air spray guns,
air cylinders and actuators, and a wide range of
industrial pneumatic systems and equipment.
Description
Marsh Bellofram’s General Purpose Type
50 and Type 50 NACE Filter Regulators
are reliable precision units designed for
instrumentation and general purpose use in
both standard environments (Type 50), and
corrosive environments (Type 50 NACE). The
Type 50 NACE complies with NACE material
requirement #MR-01-75 for sulfide stress
cracking resistant metallic material for oil field
equipment.
Test data for these regulators show excellent
performance characteristics compared with
those of similar units
presently on the market.
These Marsh Bellofram
regulators are generally superior in regulated pressure vs. flow,
forward-to-reverse flow
offset, supply pressure
sensitivity, repeatability
and stability.
Ruggedly designed and
constructed, the regulators have housings of diecast aluminum. The
Type 50 Regulator is finished with vinyl paint
(which resists scratching , weathering and
other physical abuse), while the Type 50 NACE
is finished with epoxy paint for added protection. Both models are pressure and leak tested
prior to shipment from the factory.
The Type 50 NACE is
available for use in
corrosive environments.
This complies with
NACE material requirement
#MR0175 for sulfide stress
cracking resistant metallic
material for oil field
equipment.
Careful design and
quality materials
throughout assure
long, trouble-free
operation in the most
difficult industrial
environments. A rubberized, soft-seat
valve stem provides
positive shut-off and
“forgives” dirt or
other foreign matter.
An aspirator main-
tains downstream
pressure and compensates for droop when high
flow occurs. The gauge port is convenient for
gauge installation and can also be used as an
additional full flow outlet. The Type 50 regulators include a unique self-cleaning 40 micron
nylon mesh filter (316 stainless steel in the
Type 50 NACE) that can be easily removed.
Air Regulators
Type 50
Pressure Regulator Series
Type 50 NACE
Pressure Regulator Series
Contact Us About
IP65 Compatible
T50 FR
www.marshbellofram.com • 800.727.5646
13

Air Regulators
Type 50 and 50 NACE Specifications
Type 50 Type 50 NACE
Sensitivity 1" Water Column (2.5 cm) 1" Water Column (2.5 cm)
Flow Capacity @ 100 PSIG (6.9 BAR) Supply
and 20 PSIG (1.4 BAR) outlet
Effect of Supply Pressure Variation
(25 PSIG/1.7 BAR) on Outlet Pressure
Exhaust Capacity 5 psig (0.35 BAR) above 20 psig set point 0.1–0.45 SCFM Typical (2.8 - 12.7 LPM) 0.1–0.45 SCFM Typical (2.8 - 12.7 LPM)
Maximum Supply Pressure 250 PSIG (17.2 BAR) 250 PSIG (17.2 BAR)
Effect of Changes in Flow on Regulated Pressure
(100 PSIG / 6.9 BAR Supply)
Output Pressure Ranges
Temperature Range 0-160˚F (-18 to 71˚C) -20 to 180˚F (-29 to 82˚C)
Total Air Consumption @ Maximum Output 6 SCFH (2.8 LPM) 6 SCFH (2.8 LPM)
Port Size 1/4 NPT, BSPT 1/4 NPT, BSPT
Size 3.19" X 3.19" X 7.25" (81 X 81 X 184 mm) 3.19" X 3.19" X 7.25" (81 X 81 X 184 mm)
Weight 1.81 lb. (0.8 kg) 1.81 lb. (0.8 kg)
Materials of Construction
Tamper Resistant Cover Yes Yes
Mounting Options Pipe, Panel, Bracket or Thru Body Holes Pipe, Panel, Bracket or Thru Body Holes
20 SCFM (566 LPM) 18 SCFM (510 LPM)
< 0.2 psig (0.01 BAR) < 0.2 PSIG (0.01 BAR)
4 PSIG / 0.3 BAR over flow of 10 SCFM / 283 LPM
(1/4 NPT, 20 PSIG / 1.4 BAR set point)
0-10 PSIG (0-0.7 BAR)
0-35 PSIG (0-2.4 BAR)
0-60 PSIG (0-4.1 BAR)
0-120 PSIG (0-8.3 BAR)
Body: Die cast aluminum with vinyl paint
Adjusting Screw: Plated steel
Trim: Plated Steel, Brass, Acetal Resin
Diaphragm: Buna-N Elastomer and Polyester Fabric
Knob: Phenolic Plastic (option)
Spring: Music wire
5 PSIG / 0.3 BAR over flow of 10 SCFM / 283 LPM
(1/4 NPT, 20 psig / 1.4 BAR set point)
0-30 PSIG (0-2.1 BAR)
0-60 PSIG (0-4.1 BAR)
0-120 PSIG (0-8.3 BAR)
Body: Die cast aluminum with epoxy paint
Adjusting Screw: Stainless steel
Trim: Stainless steel, Neoprene, EPDM
Diaphragm: Neoprene, Polyester Fabric
Spring: Inconel
Type 50: 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
20 1.4
Regulated PRessuRe
10 0.7
0 0
SCFM 0 5 10 15 20 25
LPM 0 142 283 425 566 708
FoRwaRd Flow
Type 50: Regulated Pressure VS. Flow
PSIG BAR
70 4.8
60 4.1
50 3.4
40 2.8
30 2.1
20 1.4
10 0.7
Regulated PRessuRe
0 0
sCFM 0
lPM 0 57 113 170 227 283 340 397 453 510 566
FoRwaRd Flow
4 6 8 10 12 14 16 18 20
2
14
800.727.5646 • www.marshbellofram.com

Type 50 Dimensional Drawing
Type 50 Ordering Information
Set Point Range
BAR PSIG
0-0.7 0-10
0-2.1 0-30
T50
T50
NACE
Part Number Port Size (NPT)
960-062-000
960-067-000 0-2.4 0-35
960-068-000 0-4.1 0-60
960-069-000 0-8.3 0-120
960-300-000
960-301-000 0-4.1 0-60
960-302-000 0-8.3 0-120
1/4
1/4
Type 50 Regulator Options and Accessories
Fluorocarbon Pintle
A special elastomeric pintle used where elements in the supply air, such as
flame retardant synthetic lubricants, are particularly destructive to ordinary
pintle material.
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.
Knob
Option to replace the square head pressure adjusting screw.
5 Micron Filter
Replaces the 40 micron filter supplied with the standard Type 50 for more
complete air filtration.
Corrosive Resistant Epoxy Finish
An epoxy paint applied to the body and dripwell of the regulator exterior surfaces to
provide increased corrosion resistance. (Standard with Type 50 NACE)
Tapped Vent
Allows installation of plumbing to capture exhaust air. (Standard with T-50 NACE)
Mounting Bracket: Type 50
Steel (dichromate finish) bracket for side mounting.
Type 50 NACE
Stainless Steel bracket for side mounting.
www.marshbellofram.com • 800.727.5646
Optional Mounting Bracket
607-000-057
Type 50 Option Ordering Matrix
Replace last three digits of part number with digits from table below.
Option
Fluorocarbon
1
Pintle
Non-Relieving 002 032 042 052 072 082 092 112
2
Knob 003 043 053 063 073 083 103 113
3
5 Micron Filter 004 054 064 074 084 094 104 114
4
Epoxy Finish 005 065 075 085 095 105 115
5
Tapped Vent 006 076 086 096 106 116
6
Mounting Bracket 007 087 097 107 117
7
Pressure Gauge 008 098 108 118
8
Tamper-Resistant Cover 009 109 119
9
Soft Relief Seat 010 110
10
Fluorocarbon Diaphragm 011
11
Pressure Gauge: Type 50
1 2 3 4 5 6 7 8 9 10 11
001 021 031 041 051 061 071 081 091 101 111
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.
Type 50 NACE
A dual scale, 0-60 PSIG (0-400 kPa) P/N 625-000-016, or 0-200 PSIG (0-1400
kPa) P/N 625-000-018, 2.47" diameter (63mm) stainless steel pressure gauge
is available and must be ordered separately. NOTE: Although the case is stainless steel, the internal components are not made of NACE qualified materials.
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. Supplied with an o-ring that is designed to seal the
adjusting screw threads in capture bleed applications.
Soft Relief Seat
Used in applications where it is desirable to reduce the standard bleed rate
from 6 SCFH [0.17 m3hr] to less than 0.1 SCFH [0.003 m3hr].
(Not available with Type 50 NACE)
Fluorocarbon Diaphragm
Diaphragm as well as all seals are made of fluorocarbon elastomer to
prevent deterioration from elements in the air supply, such as flame retardant
synthetic lubricants normally destructive to standard Buna-N material.
To order BSPT add “BSPT” to end of part number.
Air Regulators
15