User Manual
54 © 2012, ROSS CONTROLS.
All Rights Reserved.
MD4
TM
Modular Integrated Filter/Regulator
Ports: 3/8, 1/2, 3/4
Flow to 230 scfm
FEATURES:
• Filter and regulator consolidated into a single
space-saving assembly
• Modular or inline mounting
• Pressure gauge included; two gauge ports
• Add on L-O-X
®
valve – optional
• 5-micron rated polyethylene lter element;
optional 40-micron element
• Polycarbonate plastic bowl with steel shatterguard; optional metal bowl with
sight glass
• Internal automatic drain; optional manual drain and other drain types
• Self-relieving diaphragm-type regulator; optional non-relieving
• Pressure adjustment locking key; tamper-resistant pressure setting
020
scfm
FLOW
l/s
010
20
psi
100
OUTLET PRESSURE
1.4
2.8
4.2
5.6
bar
7.0
Inlet Pressure: 100 psig (6.9 bar)
0
scfm
FLOW
l/s
0
00
40 60 80 100 120 140 160 180 200 220
20 30 40 50 60 70 80 90 100
3/4 Ports
3/8 Ports
1/2 Ports
40
60
80
20
psi
100
OUTLET PRESSURE
1.4
2.8
4.2
5.6
bar
7.0
00
40
60
80
20
psi
100
OUTLET PRESSURE
1.4
2.8
4.2
5.6
bar
7.0
00
40
60
80
240
110
FLOW CHARTS
STANDARD SPECIFICATIONS (for products on this page):
Ambient/Media Temperature:
Polycarbonate plastic bowl: 40° to 125°F (4° to 52°C).
Metal bowl: 40° to 175°F (4° to 79°C).
Body: Zinc.
Bonnet: Nylon; aluminum with optional 0 to 175 psig (0 to 12.1 bar)
spring.
Bowl: 9-ounce (270-ml) polycarbonate plastic with steel
shatterguard; optional aluminum bowl with clear nylon sight glass.
Bowl Drain: Internal automatic drain; optional manual drain and
other drain types.
Fluid Media: Compressed air.
Filter Element: 5-micron rated polyethylene; optional 40-micron.
Inlet Pressure:
For automatic drain model:
With polycarbonate plastic bowl: 15 to150 psig (1.0 to 10.3 bar).
With metal bowl: 15 to 200 psig (1.0 to 13.8 bar).
For manual drain model:
With polycarbonate plastic bowl: 0 to 150 psig (0 to 10.3 bar).
With metal bowl: 0 to 200 psig (0 to 13.8 bar).
Outlet Pressure: Adjustable up to 125 psig (8.6 bar); optional
adjusting springs.
Pressure Adjustment Locking Key: Removable.
Pressure Gauge: 0 to 200 psig (0 to 14 bar); 1/4 NPT gauge
ports front and rear.
Panel Mounting: 2.05-inch (52.1-mm) hole required.
Seals: Nitrile. Valve: Brass. Cap Color: Black.
Threads: NPT, BSPP, SAE.
C
B
A
0
BAR
100 x kPa
psi
1
2
0
160
200
80
40
0
2
4
68
10
12
14
ISO Symbol
Filter/Regulator
Automatic Drain
Self-relieving
1
3
2
DIMENSIONS inches (mm) Weight †
Bowl A B * C ** Depth † lb (kg)
Polycarbonate 3.5 (88) 7.7 (195) 5.4 (137) 2.9 (73) 3.69 (1.68)
Metal 3.5 (88) 7.6 (193) 5.4 (137) 2.9 (73) 3.69 (1.68)
* Bowl removal clearance: add 3.1 (79).
** Dome removal clearance: add 0.63 (16).
† Less gauge.
REPLACEMENT FILTER ELEMENT KITS
Element Rating/Type Kit Number
5-µm polyethylene - Standard R-A115-106PE5
40-µm R-A115-106PE3
IMPORTANT NOTE: Please read carefully and thoroughly all of the CAUTIONS on the inside back cover.
BOWL SIZE
53P - 9 oz Polycarbonate Bowl
53M - 9 oz Metal Bowl
ELEMENT TYPE
A - 40 Micron
B - 5 Micron (standard)
BOWL DRAIN
A - Auto Drain
M - Manual Drain
E - Electronic Drain - available in metal bowl
drain version only
H - Automatic External Drain - available in metal bowl version only
GAUGE
A - No Gauge
B - 0-200 psig (0-14 bar)
C - 0-60 psig (0-4 bar)
D - No Gauge with Panel Mount Nut
E - 0-200 psig (0-14 bar) Gauge with Panel Mount Nut
F - 0-60 psig (0-4 bar) Gauge with Panel Mount Nut
ADJUSTMENT RANGE
A - 0-175 psig (0-12.1 bar)
B - 0-125 psig (0-8.6 bar),standard
C - 0-50 psig (0-3.4 bar)
D - 0-20 psig (0-1.4 bar)
PIPE SIZE
3 - 3/8 NPTF
4 - 1/2 NPTF
5 - 3/4 NPTF
C - 3/8 BSPP
D - 1/2 BSPP
E - 3/4 BSPP
F - 3/4-16 SAE
G - 7/8-14 SAE
MD4 53P B A B 5 B B –
HOW TO ORDER
ADD ON L-O-X
®
1 - Outlet Side
2 - Inlet Side
3 - L-O-X
®
with EEZ-ON
®
on Outlet Side
4 - L-O-X
®
with EEZ-ON
®
on Inlet Side
- Blank for no L-O-X
®