nomad TRANS-FLO NTG50 Series User manual

OPERATION MANUAL
AIR-OPERATED •DOUBLE DIAPHRAGM •PUMPS
A JDA Global Company
1/14 rev.3
NTG50 NOMAD TRANS-FLO™
ALUMINUM Models
316 S.S. Models

CAUTION – SAFETY POINTS
NTG50 NOMAD TRANS-FLO™
TEMPERATURE LIMITS:
Neoprene -17.8°C to 93.3°C 0°F to 200°F
Buna-N -12.2°C to 82.2°C 10°F to 180°F
EPDM -51.1°C to 137.8°C -60°F to 280°F
Viton®-40°C to 176.7°C -40°F to 350°F
Santoprene®-40°C to 107.2°C -40°F to 225°F
Polyurethane 12.2°C to 65.6°C 10°F to 150°F
Hytrel®-28.9°C to 104.4°C -20°F to 220°F
PTFE 4.4°C to 104.4°C 40°F to 220°F
1
1. Review the NOMAD Chemical Field Guide
for all applications. The information
provided is the “best thinking available”
regarding chemical compatibility. The
guide however, does not provide a
recommendation.
2. Always wear safety glasses during pump
operation. A diaphragm rupture may force
liquid to exit via air exhaust.
3. Whenhandlingammableuids,prevent
static sparking by properly grounding
the pump.
4. Do not exceed 125 psig (8.6 bar).
5. Prior to maintenance, compressed air
line should be disconnected to allow air
pressure to bleed from pump.
6. Tighten all clamp bands and hardware
parts prior to installation. Fittings may
loosen during transportation.

PUMP DESIGNATION SYSTEM
NTG50 NOMAD TRANS-FLO™
MATERIAL CODES
MODEL
NTG50 = 51MM (2")
WETTED PARTS &
OUTER PISTON
AA = ALUMINUM / ALUMINUM
S = 316 S.S.
AIR CHAMBERS
A = ALUMINUM
CENTER BLOCK
A = ALUMINUM
AIR VALVE
B = BRASS
DIAPHRAGMS
BN = BUNA-N (Red Dot)
FG = HYTREL
ND = EPDM (Blue Dot)
NE = NEOPRENE (Green Dot)
SN = SANTOPRENE
TF = PTFE
VT = VITON (White Dot)
VALVE BALL
BN = BUNA-N (Red Dot)
FG = HYTREL
ND = EPDM (Blue Dot)
NE = NEOPRENE (Green Dot)
SN = SANTOPRENE
TF = PTFE (White)
VT = VITON (White Dot)
VALVE SEAT
A = ALUMINUM*
BN = BUNA-N (Red Dot)
FG = HYTREL
ND = EPDM (Blue Dot)
NE = NEOPRENE (Green Dot)
S = STAINLESS*
SN = SANTOPRENE
VT = VITON
*Valve seat o-ring required.
VALVE SEAT O-RING
TF = PTFE (White)
2
NTG50 / XXXX / XX / XX / XX / X
MODEL VALVE SEAT
THREADED CONNECTION
VALVE BALLS
DIAPHRAGMS
AIR VALVE
CENTER BLOCK OR CENTER SECTION
AIR CHAMBERS OR CENTER SECTION
WETTED PARTS
SIZE
51 mm (2") Pump
Maximum Flow Rate:
617 lpm (163 gpm)

AIR OPERATED DOUBLE DIAPHRAGM PUMPS
FUNCTIONALITY AND FLOW PATTERN
Figure 1: Air valve directs
pressurized air to the back side
of diaphragm A. Compressed air
is applied directly to the liquid
column separated by elastomeric
diaphragms. The diaphragm
acts as a separation membrane
between the compressed air
and liquid, balancing the load
and removing mechanical
stress from the diaphragm. The
opposite diaphragm is pulled
in by the shaft connected to
the pressurized diaphragm.
Diaphragm B is on its suction
stroke; air behind the diaphragm
has been forced out to the
atmosphere through the exhaust
port of the pump. Atmospheric
pressure forces uid into the
inlet manifold forcing the inlet
valve ball o its seat. Liquid is
free to move past the inlet valve
ball and ll the liquid chamber
(see shaded area).
Figure 2: When the pressurized
diaphragm, diaphragm A,
reaches the limit of its discharge
stroke, the air valve redirects
pressurized air to the back
side of the diaphragm B. The
pressurized air forces diaphragm
B away from the center block
while pulling diaphragm A to
the center block. Diaphragm B
is now on its discharge stroke.
These same hydraulic forces
lift the discharge valve ball o
its seat, while the opposite
discharge valve ball is forced
ontoitsseat,forcinguidtoow
through the pump discharge.
Atmospheric pressure forces
uid into the inlet manifold of
the pump. The inlet valve ball is
forced o its seat allowing the
uid being pumped to ll the
liquid chamber.
Figure 3: At completion of
the stroke, the air valve again
redirects air to the back side
of diaphragm A, which starts
diaphragm B on its exhaust
stroke. As the pump reaches
its original starting point, each
diaphragm has gone through
one exhaust and one discharge
stroke. This constitutes one
complete pumping cycle. The
pump may take several cycles to
completely prime depending on
the conditions of the application.
NTG50 NOMAD TRANS-FLO™
3

DIMENSIONAL DRAWINGS
PERFORMANCE
NTG50 METAL
RUBBER-FITTED
NTG50 NOMAD TRANS-FLO™
4
Height............................................. 668 mm (26.3")
Width.............................................. 404 mm (15.9")
Depth ............................................. 343 mm (13.5")
Est. Ship Weight.................Aluminum 33 kg (72 lbs)
316 S.S. 51 kg (112 lbs)
Air Inlet...............................................19 mm (3/4")
Inlet....................................................... 51 mm (2")
Outlet .................................................... 51 mm (2")
Suction Lift ...................................... 6.4 m Dry (21')
9.5 m Wet (31')
Displacement/Stroke ....................2.69 l (0.71 gal.)
1
Max. Flow Rate .......................... 617 lpm (163 gpm)
Max. Size Solids.................................6.4 mm (1/4")
1Displacement per stroke was calculated at 4.8 bar
(70 psig) air inlet pressure against a 2 bar (30 psig)
head pressure.
Example: To pump 318 lpm (84 gpm) against
a discharge pressure head of 2.1 bar (30 psig)
requires 4.1 bar (60 psig) and 85 Nm3/h (50 scfm) air
consumption. (See dot on chart.)
Caution: Do not exceed 8.6 bar (125 psig) air
supply pressure.
Flow rates indicated on chart were determined by pumping water.
For optimum life and performance, pumps should be specified so that daily operation parameters
will fall in the center of the pump performance curve.
DIMENSIONS
BSP threads available.
ITEM METRIC (mm) STANDARD (inch)
A 404 15.9
B 48 1.9
C 630 24.8
D 668 26.3
E 361 14.2
F 58 2.3
G 61 2.4
H 272 10.7
J 343 13.5
K 229 9.0
L 254 10.0
M 257 10.1
N 312 12.3
P 15 0.6
R 64 2.5

SUGGESTED INSTALLATION
NTG50 NOMAD TRANS-FLO™
The suction pipe size should be at least 51 mm (2")
diameter or larger if highly viscous material is being
pumped. The suction hose must be non-collapsible,
reinforced type as the NTG50 is capable of pulling
a high vacuum. Discharge piping should be at least
51 mm (2"); larger diameter can be used to reduce
friction losses. It is critical that all ttings and con-
nections are airtight or a reduction or loss of pump
suction capability will result.
Every pump location should have an air line large
enough to supply the volume of air necessary to
achieve the desired pumping rate.
Unnecessary elbows, bends and ttings should be
avoided. Pipe sizes should be selected so as to keep
friction losses within practical limits. All piping should
be supported independently of the pump.
Expansion joints can be installed to aid in absorbing
the forces created by the natural reciprocating action
of the pump. Flexible connections between the pump
and rigid piping will also assist in minimizing pump
vibration. A surge suppressor should be installed to
protect the pump, piping and gauges from surges and
water hammer.
When pumps are installed in applications involving
ooded suction or suction head pressures, a gate
valve should be installed in the suction line to permit
closing of the line for pump service.
The NTG50 can be used in submersible applications
only when both wetted and non-wetted portions are
compatible with the material being pumped. If the
pump is to be used in a submersible application, a
hose should be attached to the pump’s air exhaust
and the exhaust air piped above the liquid level.
5
PERFORMANCE
NTG50 METAL
PTFE-FITTED
Height............................................. 668 mm (26.3")
Width.............................................. 404 mm (15.9")
Depth ............................................. 343 mm (13.5")
Est. Ship Weight..............Aluminum 33.1 kg (72 lbs)
316 S.S. 51 kg ( 112 lbs)
Air Inlet...............................................19 mm (3/4")
Inlet....................................................... 51 mm (2")
Outlet .................................................... 51 mm (2")
Suction Lift ...................................... 3.7 m Dry (12')
9.5 m Wet (31')
Displacement/Stroke ....................1.51 l (0.40 gal.)
1
Max. Flow Rate .......................... 534 lpm (141 gpm)
Max. Size Solids.................................6.4 mm (1/4")
1Displacement per stroke was calculated at 4.8 bar
(70 psig) air inlet pressure against a 2 bar (30 psig)
head pressure.
Example: To pump 284 lpm (75 gpm) against a
discharge pressure head of 2.1 bar (30 psig) requires
4.1 bar (60 psig) and 102 Nm3/h (60 scfm) air
consumption. (See dot on chart.)
Caution: Do not exceed 8.6 bar (125 psig) air
supply pressure.
Flow rates indicated on chart were determined by pumping water.
For optimum life and performance, pumps should be specified so that daily operation parameters
will fall in the center of the pump performance curve.

6
Note: In the event of a power
failure,theshutovalveshould
be closed, if the restarting of
the pump is not desirable once
power is regained.
TROUBLESHOOTING
NTG50 NOMAD TRANS-FLO™
Pump will not run or runs slowly.
1.Checkairinletscreenandairlterfordebris.
2.Checkforstickingairvalve,ushairvalve
in solvent.
3. Check for worn out air valve. If piston face in air
valve is shiny instead of dull, air valve is worn
beyond working tolerances and must
be replaced.
4. Check center block rings. If worn excessively, they
willnotsealandairwillsimplyowthroughpump
and out air exhaust.
5. Check type of lubricant being used.
ISO 15-5 wt. recommended.
Pump runs but little or no product ows.
1. Check for pump cavitation; slow pump speed
down to match thickness of material being
pumped.
2. Check for sticking ball valves. If material being
pumped is not compatible with pump elastomers,
swelling may occur.
3. Make sure all suction connections are
air tight.
Pump air valve freezes.
Check for excessive moisture in compressed air.
Air bubbles in pump discharge.
1. Check for ruptured diaphragm.
2. Check for tightness for clamp bands,
especially at intake manifold.
Product comes out air exhaust.
1. Check for diaphragm rupture.
2. Check tightness of piston plates to shaft.
Pump rattles.
Create false discharge head or suction lift.
SUGGESTED INSTALLATION

7
EXPLODED VIEW (RUBBER DIAPHRAGMS)
NTG50 NOMAD TRANS-FLO™
EXPLODED VIEW (PTFE DIAPHRAGMS)

Item Description Qty. Part Number
1 Air Valve Assembly 1 N08-2012-07
3 Air Valve End Cap w/ Guide 1 N08-2332-01
4PressureDierentialCap 1 N08-2301-01
5 Air Valve Snap Ring 2 N08-2651-01
6 Air Valve Cap O-ring 2 N08-3201-52
10 Air Valve Gasket 1 N08-2600-52
11 Air Valve Screw 5/16" - 18 x 2 1/4" 4 N08-6000-08
12 Center Block 1 N08-3100-01-225
13 Center Block TRACKER™ Seal 7 N08-3210-77-225
14 Block Gasket 2 N08-3520-52
15 Shaft 1 N08-3800-03-07
16 Outer Piston 2 N08-4550-01
17 Inner Piston 2 N08-3700-01
18 Air Chamber 2 N08-3650-01
19 Air Chamber Screw 3/8" - 16 x 4" 3 N08-6200-08
20 Air Chamber Cone Nut 3/8" - 16 3 N08-6550-08
21 Liquid Chamber 2 N08-5000-01
22 Discharge Manifold 1 N08-5021-01
29 Inlet Manifold 1 N08-5080-01
30 Diaphragm - Neoprene 2 N08-1010-51
31 Valve Ball - Neoprene 4 N08-1080-51
32 Valve Seat - Neoprene 4 N08-1120-51
33 Large Clamp Band Assembly 2 N08-7300-08
34 Large Carriage Bolt 3/8" - 16 x 3" 4 N08-6120-08
35 Large Hex Nut 3/8" - 16 4 N08-6420-08
36 Small Clamp Band Assembly 4 N08-7100-08
37 Small Carriage Bolt 5/16" - 18 x 1-3/8" 8 N08-6050-08
38 Small Hex Nut 5/16"-18 8 N08-6450-08
Muer(NotShown) 1 N08-3510-99
NTG50 NOMAD TRANS-FLO™
NTG50 RUBBER-FITTED
NTG50 RUBBER-FITTED 316 S.S.
8
16 Outer Piston 2 N08-4550-03
21 Liquid Chamber 2 N08-5000-03
22 Manifold 1 N08-5021-03
29 Inlet Manifold 1 N08-5080-03
33 Large Lamp Band Assembly 2 N08-7300-03
34 Large Carriage Bolt 3/18" - 16 x 3/8" 4 N08-6120-03
35 Large Hex Head Nut 3/8" - 16 4 N08-6420-03
36 Small Clamp Band Assembly 4 N08-7100-03
37 Small Carriage Bolt 5/16" - 18 x 1-3/8" 8 N08-6050-03
38 Small Hex Head Nut 5/16" - 18 x 1-3/8" 8 N08-6450-03

NTG50 RUBBER-FITTED
NTG50 NOMAD TRANS-FLO™
9

Item Description Qty. Part Number
1 Air Valve Assembly 1 N08-2012-07
3 Air Valve End Cap w/ Guide 1 N08-2332-01
4PressureDierentialPump 1 N08-2301-01
5 Air Valve Snap Ring 2 N08-2651-01
6 Air Valve Cap O-ring 2 N08-3201-52
10 Air Valve Gasket 1 N08-2600-52
11 Air Valve Cap Screw 5/16" - 18 x 2 1/4" 4 N08-6000-08
12 Center Block 1 N08-3100-01-225
13 Center Block TRACKER™ Seal 7 N08-3210-77-225
14 Block Gasket 2 N08-3520-52
15 Shaft 1 N08-3820-03-07
16 Shaft Stud 1/2" - 20 x 1 - 7/8" 2 N08-6152-08
17 Outer Piston 2 N08-4600-01
18 Inner Piston 2 N08-3750-01
19 Air Chamber 2 N08-3650-01
20 Air Chamber Screw 3/8" - 16 x 3 - 9/16" 3 N08-6200-08
21 Air Chamber Cone Nut 3/8" - 16 3 N08-6550-08
22 Liquid Chamber 2 N08-5000-01
23 Discharge Manifold 1 N08-5021-01
24 Inlet Manifold 1 N08-5080-01
25 Diaphragm 2 N08-1010-55
26 Back-up Diaphragm 2 N08-1060-51
27 Valve Ball 4 N08-1080-55
28 Valve Seat 4 N08-1121-01
29 Large Clamp Band Assembly 2 N08-7300-08
30 Large Carriage Bolt 1/2" - 13 x 3 1/2" 4 N08-6120-08
31 Large Hex Nut 1/2" -13 4 N08-6420-08
32 Small Clamp Band Assembly 4 N08-7100-08
33 Small Hex Head Cap Screw 5/16"-18 x 1-3/8" 8 N08-6050-08
34 Small Hex Nut 5/16" -18 8 N08-6400-08
35 PTFE Valve Seat O-Ring 4 N08-1200-55
Muer(NotShown) 1 N08-3510-99
NTG50 NOMAD TRANS-FLO™
NTG50 PTFE-FITTED
10
NTG50 RUBBER-FITTED 316 S.S.
11 Air Valve Cap Screw 5/16" - 18 x 2-1/4" 4 N08-6000-03
17 Outer Piston 2 N08-4600-03
22 Liquid Chamber 2 N08-5000-03
23 Discharge Manifold 1 N08-5021-03
24 Inlet Manifold 1 N08-5080-03
28 Valve Seat 4 N08-1121-03
29 Large Clamp Band Assembly 2 N08-7300-03
30 Large Carriage Bolt 1/2" - 13 x 3-1/2" 4 N08-6120-03
31 Large Hex Nut 1/2" - 13 4 N08-6420-03
32 Small Clamp Band Assembly 4 N08-7100-03
33 Small Clamp Hex Cap Screw 5/16" - 18 x 1-3/8" 8 N08-6050-03
34 Small Hex Nut 5/16" - 18 8 N08-6400-03

NTG50 NOMAD TRANS-FLO™
NTG50 PTFE-FITTED
11
NOTE: PTFE diaphragm models assembled with
PTFE gasket kit at factory (not shown).

1351 Park Ave., Suite 104
Redlands, CA USA 92373
[phone]
A JDA Global Company