Dwyer MTF Series Multitude Flow Systems

Customize flow systems to meet application requirements. Systems can be configured with up to six different flow tubes with various flow capacities and flow patterns. The Series MTF Multitube Flow Systems are ideal for multichannel metering, mixing, or monitoring applications.

To Customize your flow system:

1) Determine the flow pattern required for the application (see below).

2) Select a 65 mm or 150 mm frame (next page), along with the appropriate number of tubes required, flow pattern, and wetted parts. Choose a 150 mm Gas Proportioner Frame (Series MTP) to blend the 2 or 3 gasses at required concentrations. Gas proportioner frames are typically used at 50 psi.

3) Choose the appropriate 65 mm or 150 mm correlated flow tubes (next page), for air or water.

4) Select a valve cartridge if desired that matches the range of the flow tube.

	Isolated parallel channels
	Common exhaust with parallel inlets
	Common inlet with parallel exhausts

DIMENSIONS

DIM "A" Scale Length	DIM "H"	DIM "O"	DIM "W"
DIM "A" Scale Length	DIM "H"	DIM "O"	1 tube	2 tubes	3 tubes	4 tubes	5 tubes	6 tubes
65 mm	5-½ [139.70]	4-½ [114.30]	1-¼ [31.75]	2-¼ [57.15]	3-¼ [82.55]	4-¼ [107.95]	5-¼ [133.35]	6-¼ [158.75]
150 mm	9-13/16 [249.25]	8-13/16 [223.85]	1-¼ [31.75]	2-¼ [57.15]	3-¼ [82.55]	4-¼ [107.95]	5-¼ [133.35]	6-¼ [158.75]

PHYSICAL DATA
Scales: Universal 65 mm or 150 mm scales with correlation charts.
Accuracy: ±2% FS @ 70°F (21.1°C) and 14.7 psia (1 atm absolute).
Repeatability: ±0.25% of scale reading.
Turn-down Ratio: 10:1; 20:1 with combinations of two floats installed in meter.
Maximum Operating Pressure: 200 psig (13.8 bar).
Maximum Operating Temperature: 250°F (121°C).
Mounting: Vertical.
Connection: 1/8" female NPT.
Flowtube: Borosilicate glass.
Float: 316 stainless steel or black glass as indicated.
Float Stops: Teflon^®.
End Fittings: Anodized Aluminum or 316 stainless steel.
Front Shield: Polycarbonate.
Side Panels: Black, anodized aluminum.
O-Rings: Buna-N on aluminum models and Viton^® on stainless steel models.

65 mm Frames

Model Number	Pattern	Tube Capacity	Wetted Parts
MTF-1621	Isolated	2	Aluminum
MTF-2621	Isolated	2	316 SS
MTF-1622	Common	2	Aluminum
MTF-2622	Common	2	316 SS
MTF-1631	Isolated	3	Aluminum
MTF-2631	Isolated	3	316 SS
MTF-1632	Common	3	Aluminum
MTF-2632	Common	3	316 SS
MTF-1641	Isolated	4	Aluminum
MTF-2641	Isolated	4	316 SS
MTF-1642	Common	4	Aluminum
MTF-2642	Common	4	316 SS
MTF-1651	Isolated	5	Aluminum
MTF-2651	Isolated	5	316 SS
MTF-1652	Common	5	Aluminum
MTF-2652	Common	5	316 SS
MTF-1661	Isolated	6	Aluminum
MTF-2661	Isolated	6	316 SS
MTF-1662	Common	6	Aluminum
MTF-2662	Common	6	316 SS

150 mm Frames

Model Number	Pattern	Tube Capacity	Wetted Parts
MTF-1121	Isolated	2	Aluminum
MTF-2121	Isolated	2	316 SS
MTF-1122	Common	2	Aluminum
MTF-2122	Common	2	316 SS
MTF-1131	Isolated	3	Aluminum
MTF-2131	Isolated	3	316 SS
MTF-1132	Common	3	Aluminum
MTF-2132	Common	3	316 SS
MTF-1141	Isolated	4	Aluminum
MTF-2141	Isolated	4	316 SS
MTF-1142	Common	4	Aluminum
MTF-2142	Common	4	316 SS
MTF-1151	Isolated	5	Aluminum
MTF-2151	Isolated	5	316 SS
MTF-1152	Common	5	Aluminum
MTF-2152	Common	5	316 SS
MTF-1161	Isolated	6	Aluminum
MTF-2161	Isolated	6	316 SS
MTF-1162	Common	6	Aluminum
MTF-2162	Common	6	316 SS

150 mm Gas Proportioner Frames

Model Number	Tube Capacity	Wetted Parts
MTP-112	2	Aluminum
MTP-212	2	316 SS
MTP-113	3	Aluminum
MTP-213	3	316 SS

65 mm Correlated Flow Tubes

Model Number	Max. Flow Rate (mL/min)*		Float
Model Number	Air	Water	Float
FT-61	6	0.07	Glass
FT-62	17	0.28	316SS
FT-63	49	0.55	Glass
FT-64	145	2.38	316SS
FT-67	202	2.6	Glass
FT-68	522	12.0	316SS
FT-611	1249	27	Glass
FT-612	2520	71	316SS
FT-613	2040	40	Glass
FT-614	3990	108	316SS
FT-617	6318	147	Glass
FT-618	12058	364	316SS
FT-621	23169	522	Glass
FT-622	42094	1261	316SS

* Flow Rates are given for standard pressure and
temperature 70°F (21°C) @ 760 mm Hg.

150 mm Correlated Flow Tubes

Model Number	Max. Flow Rate (mL/min)*			Float
Model Number	Air	Air (50 PSI)	Water	Float
FT-123	19	83	0.19	Glass
FT-124	61	242	0.94	316SS
FT-125	49	192	0.53	Glass
FT-126	137	460	2.45	316SS
FT-127	92	324	0.9	Glass
FT-128	264	825	4.7	316SS
FT-129	374	1086	5.5	Glass
FT-130	814	2024	20.4	316SS
FT-133	2313	5528	54	Glass
FT-134	4562	10813	130	316SS
FT-137	8678	19767	210	Glass
FT-138	16737	38995	506	316SS
FT-139	22536	49374	541	Glass
FT-140	41512	89880	1288	316SS

Valve Cartridges
For metering or mixing applications, complete your multitube flow system by selecting a valve cartridge suitable for the flow range. Choose a standard 6-turn valve or high precision 16-turn valve.

PHYSICAL DATA

Wetted Parts 6-turn Valves: For Aluminum frames: Aluminum body, 316 SS spindle, Delrin^® orifice, Buna-N O-rings; for 316 SS frames: 316 SS body, 316 SS spindle, Kel-F^® orifice, Viton^® O-rings.

Wetted Parts 16-turn Valves: For Aluminum frames: Brass body, 316 SS spindle, Kel-F^® orifice, Buna-N O-rings; for 316 SS frames: 316 SS body, 316 SS spindle, Kel-F^® orifice, Viton^®.

Model Number Standard Valve 6-turn

Aluminum SS Flow Rate (Air) Flow Rate (H2O)

mL/min mL/min

FV-11 FV-21 0 to 5000 0 to 125

FV-12 FV-22 5001 to 10,000 126 to 325

FV-13 FV-23 10,001 and above 326 and above

Model Number Standard Valve 16-turn

Aluminum SS Flow Rate (Air) Flow Rate (H2O)

mL/min mL/min

FVH-11 VA81 0 to 200 0 to 6

FVH-12 VA82 201 to 400 7 to 12

FVH-13 VA83 401 to 1000 13 to 26

FVH-14 VA84 1001 to 2500 27 to 80

FVH-15 VA85 2501 to 6200 81 to 200

FVH-16 VA86 6201 and above 201 and above

Dwyer MTF Multitube Flow Systems

Dwyer MTF Multitube
Flow Systems