+44 (0)1785 761344 or 
info@polyflon.co.ukFlow Meter (4L & 4K)
Series 4L Standard Flow meter & Series 4K Custom Flow meter
The Series 4L Flow Meter is particularly suitable for installation in gas analyser cabinets where it can be easily panel mounted. The standard measuring tubes are suitable for many measuring ranges. Should you wish to determine your own specific flow range Polyflon can offer specially graduated measuring tubes fitted into the same flow meter body to create the Series 4K version. Both come with control valves and rear female threads.
Series 4L Standard Flow meter availability
| Standard flow ranges (L/hr) | Measuring tube dims (ØxL in mm) | Rear female BSP/NPT threads |
|---|---|---|
| 4-40 air | 10×75 | 1/8” |
| 10-100 air | 10×75 | 1/8” |
| 40-400 air | 17×75 | 1/4” |
| 150-1600 air | 17×75 | 1/4” |
| 2.5-25 water | 17×75 | 1/4” |
| 4.0-40 water | 17×75 | 1/4” |
| 10-100 water | 17×75 | 1/4” |
| 250-2500 air | 28×150 | 1/2” |
| 600-6000 air | 28×150 | 1/2” |
| 25-250 water | 28×150 | 1/2” |
| 60-600 water | 28×150 | 1/2” |
- Note: If you require a Series 4K Flow Meter with custom measuring tube please contact our sales dept with your desired flow range & the type of media.
Specifications
| Dimensions for Series 4L & 4K (mm) | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| BSP/NPT | L | L1 | L2 | L3 | L4 | L5 | L6 | L7 | B | B1 | B2 | h | d | d1 |
| 1/8” | 100 | 5 | ∼70 | 26 | 80 | 7 | 30 | 40 | 20 | 35 | 27 | 10 | Ø14 | Ø4.5 |
| 1/4” | 110 | 5 | ∼85 | 33 | 85 | 8 | 35 | 40 | 25 | 35 | 28 | 12.5 | Ø18.5 | Ø4.5 |
| 1/2” | 212 | 5 | ∼133.5 | 43 | 170 | 10 | 58.5 | 95 | 42 | 42 | 33 | 21 | Ø26.5 | Ø5.5 |
| Components | Series 4L & 4K | |
|---|---|---|
| 1. Housing | PP, PVDF, PFA | |
| 2. Valve Spindle | 4L – PCTFE, 4K – PTFE | |
| 3. O-Ring ∗ | Viton® | |
| 4. Measuring Tube | Duran® Glass | |
| 5. Float | Air | 4L – Glass, 4K – PP |
| Water | Stainless Steel | |
| 6. Protective Tube/Shield | PMMA | |
- ∗ EPDM, Kalrez® on request
- Flow range for air measured at 0.1 bar, 20°C. Flow range for water measured at 1 bar, 20°C.
Click here for printable version – Flow meter – 4L & 4K
The data listed falls within the normal range of product properties but they should not be used to establish specification limits nor used alone as the basis of design. Polyflon Technology Limited assumes no obligation or liability for any advice furnished by it or for results obtained with respect to these products. All such advice is provided gratis and the buyer assumes sole responsibility for the results obtained in reliance thereon.
