Series DTFW Variable-Area Flowmeter
Brand: Dwyer Instruments, LLCThe Series DTFW Variable-Area Flowmeter for Liquids measures water flow rates with ± 2% of full-scale accuracy at a competitive price. 
Durable metal construction ensures great compatibility and the strength to withstand system pressures of up to 3000 psig (200 bar). 1/4", 1/2" and 1" connections are available, with construction choices of a high quality brass or stainless steel.
Comes pre-calibrated for horizontal in-line mounting.
Features- Durable metal construction ensures great reliability and the strength to withstand system pressures of up to 3000 psig (200 bar)
 - Shatter proof construction, unlike glass tube variable area flowmeters, yields long operation life
 - Preform precisely in high temperature, high vibration, shock-prone environments
 
Specifications
Accuracy
- ± 2 % of Full Scale
 
Enclosure, Body Material
- 316 Stainless Steel
 - Brass
 
Flow Rate
- 0 to 30 gpm (0 to 113.6 LPM) to Water 1/4" to 1/2" NPT
 
Maximum System Pressure
- psi: 1,500 (bar: 103, kPa: 10,340) - DTFW-3S, DTFO-3S
 - psi: 3,000 (bar: 206.8, kPa: 20,680) - All Other DTFW Models & DTFO-1B/2B
 
Media
- Compatibile Liquid
 - Compatible Oils
 
NPT Connection
- 1" NPT Female
 - 1/2" NPT Female
 - 1/4" NPT Female
 
Repeatability
- ± 1 % of Full Range
 
Seat / Seal Material
- Buna-N
 
Size
- Dial: 2.5" (63 mm)
 
Spring Material
- 302 Stainless Steel
 
Temperature Range
- -40° to 93° C (-40° to 200° F)
 
Wetted Materials
- Acetal
 - PTFE-Coated - Magnet & Metering Cone
 
- Monitoring Pressure Drop Across Filters or Strainers
 - Flow Scale-based on Differential Pressure
 - Liquid Level given pressure differential between bottom and top of tank
 - Hydraulic Equipment
 - Oil & Gas Equipment
 - Heat Exchangers
 - Backflow Prevention