Gas filters and filter - separators
Gas filters have been supplied by our company since 1994 mainly for the Czech and Slovak markets, but they are also installed in gas plants in Ghana, Latvia, Pakistan, Austria, Russia and other countries. We manufacture both gas filters for filtering dry natural gas, as well as for filtering wet natural gas fitted with a coalescing filter insert for separating solid and liquid particles.
So far, our company has produced more than 2,000 pcs of gas filters for nominal pressures PN 16, PN 40, PN 63 and PN 100 and operating flow rates from 25 to 3,800 m3/h.
For a specific application, gas filters must be designed in such a way that the maximum operating flow specified in the catalog sheets is not exceeded under all operating conditions.
The calculation of the operating flow rate of the filter Q_p (m^3/h) from the entered converted flow rate Q_n (Nm^3/h) is performed at:
- minimum operating pressure p_min (bar)
- maximum operating temperature t_max (°C)
according to the formula taking into account the effect of gas compressibility and its temperature:
where:
Q_n - calculated gas flow at a pressure of 101.325 kPa and a temperature of 0°C
Z_p - compressibility factor at operating conditions pmin and tmax
Z_n - compressibility factor at reference conditions of 101.325 kPa and 0°C
For an approximate calculation of the operating flow Q_p, it is possible to use a simplified formula:
Based on the customer's request, we will be happy to prepare a technical, price and term offer. In the event that none of the standard manufactured filters meet the parameters specified by the customer, we are able to design and supply an atypical gas filter, as our company provides strength and technological calculations and equipment construction with its own employees.
The tables below include gas filters supplied as standard and gas filters supplied to order according to the customer's specifications, both filters for the separation of solid particles ("dry filters") and filters for the separation of solid and liquid particles with a coalescing filter insert (" wet filters").
| TYPE | RANGE OF NOMINAL OPERATING FLOWS Qpjm |
PRESSURE CLASS | PICTURE | TPN CATALOG SHEET |
|
PFZ Older filter version - replaced by PFZN type. |
50 m3/h 100 m3/h 200 m3/h 500 m3/h 800 m3/h 1 500 m3/h 2 200 m3/h |
PN 40, 63 PN 16, 40, 63 PN 16, 40, 63 PN 16, 40, 63 PN 16, 40, 63 PN 16, 40 PN 16, 40 |
 |
|
| PFZN The PFZN gas filter is designed for separating solid particles from dry gas. The working fluid can be natural gas, natural gas and hydrogen mixture, gaseous phase of propane, butane and propane-butane. The lid is fitted with a quick-release - locking flange. Resolution: 5 µm |
20 m3/h 35 m3/h 40 m3/h 60 m3/h 130 m3/h 200 m3/h 210 m3/h 220 m3/h 250 m3/h 360 m3/h 480 m3/h 520 m3/h 620 m3/h 800 m3/h 1 000 m3/h 1 200 m3/h 1 600 m3/h 1 800 m3/h 2 000 m3/h 2 500 m3/h 2 800 m3/h 4 700m3/h |
PN 16 PN 40 PN 63 PN 100 |
 |
 |
|
PFZF |
300 m3/h 700 m3/h 1 500 m3/h |
PN 16 |  |
 |
|
PFM |
10 m3/h | PN 40, 100 |  |
 |
| GAS FILTERS SUPPLIED TO ORDER | |||
| FILTERS FOR THE SEPARATION OF SOLID PARTICLES | |||
| TYPE | TECHNICAL PARAMETERS | CUSTOMER | TPN |
| PFVP 30100 It is intended for the separation of solid particles from dry gas. |
Working substance: natural gas Maximum operating pressure: 8.5 MPa Maximum flow Qpmax: 1600 m3/h Fractional resolution: - 99.8% for solid particles ≥ 5.0 µm Inlet/outlet flange: 6" ANSI 600 RF |
Weiss Automations systeme GmbH Wien, Rakousko End-user: ÖMV, Austria |
 |
| PFVP 3016 It is intended for the separation of solid particles from dry gas. |
Working substance: natural gas Maximum operating pressure: 1.7 MPa Maximum flow Qpmax: 3500 m3/h Fractional resolution: - 99.98% for solid particles ≥ 5.0 µm Inlet/outlet flange: 10" ANSI 150 RF |
Weiss Automations systeme GmbH Wien, Rakousko End-user: ÖMV, Austria |
 |
| PFZ 3806 It is intended for the separation of solid particles from dry gas. |
Working substance: natural gas Maximum operating pressure: 0.6 MPa Maximum flow Qpmax: 3800 m3/h Fractional resolution: - 98.0% for solid particles ≥ 5.0 µm Inlet/outlet flange: DN 250 PN 6 |
ARMATURY GROUP, a.s. | |
| PFZ 3306 It is intended for the separation of solid particles from dry gas. |
Working substance: natural gas Maximum operating pressure: 0.6 MPa Maximum flow Qpmax: 3300 m3/h Fractional resolution: - 98.0% for solid particles ≥ 5.0 µm Inlet/outlet flange: DN 250 PN 6 |
G.A.S., a.s. |  |
| PFZL 880 Horizontal filter for installation in a mobile gas compressor. It is intended for the separation of solid particles from dry gas. |
Working substance: natural gas Maximum operating pressure: 10.0 MPa Maximum flow Qpmax: 800 m3/h Fractional resolution: - 98.0% for solid particles ≥ 5.0 µm Inlet/outlet flange: DN 100 PN 100 |
NET4GAS, s.r.o. Praha | |
| PFZ 863 It is intended for the separation of solid particles from dry gas. |
Working substance: natural gas Maximum operating pressure: 6.3 MPa Maximum flow Qpmax: 850 m3/h Fractional resolution: - 99.86% for solid particles ≥ 5.0 µm Minimum operating temperature: -30°C Inlet/outlet flange: DN 80 PN 63 |
PBS ENERGO a.s. Velká Bíteš | |
| PFN 2540 It is intended for the separation of solid particles from dry gas. |
Working substance: nitrogen Maximum operating pressure: 4.0 MPa Maximum flow Qpmax: 25 m3/h Fractional resolution: - 99.0% for solid particles ≥ 5.0 µm Inlet/outlet flange: DN 25 PN 40 |
Hutira Slovakia s.r.o. Handlová, Slovakia | |
| FILTERS FOR THE SEPARATION OF SOLID AND LIQUID PARTICLES WITH A COALESCENCE FILTER INSERT | |||
| PFZK 2263 The PFZK gas filter is intended for the separation of solid and liquid particles from contaminated wet natural gas. The lid is fitted with a quick-release - locking flange. |
Working substance: natural gas Maximum operating pressure: 6.3 MPa Maximum flow Qpmax: 2200 m3/h Fractional resolution: - 98.9% for solid particles ≥ 1.0 µm - 98.6% for liquid particles ≥ 1.0 µm Inlet/outlet flange: DN 200 PN 63 |
 |
|
| PFZK 840 The PFZK gas filter is intended for the separation of solid and liquid particles from heavily polluted wet natural gas. The lid is fitted with a quick-release - locking flange. |
Working substance: natural gas Maximum operating pressure: 4.0 MPa Maximum flow Qpmax: 800 m3/h Fractional resolution: - 98.9% for solid particles ≥ 1.0 µm - 98.6% for liquid particles ≥ 1.0 µm Inlet/outlet flange: DN 150 PN 40 |
 |
|
| PFZK 140 It is intended for the separation of solid and liquid particles from wet, slightly polluted gas. |
Working substance: natural gas Maximum operating pressure: 4.0 MPa Maximum flow Qpmax: 110 m3/h Fractional resolution: - 98.9% for solid particles ≥ 1.0 µm - 98.6% for liquid particles ≥ 1.0 µm Inlet/outlet flange: DN 50 PN 40 |
MND a.s. Hodonín | |
| PFZK 163 It is intended for the separation of solid and liquid particles from wet, slightly polluted gas. |
Working substance: natural gas Maximum operating pressure: 6.3 MPa Maximum flow Qpmax: 36 m3/h Fractional resolution: - 99.999% for solid particles ≥ 1.0 µm - 99.999% for liquid particles ≥ 1.0 µm Inlet/outlet flange: DN 25 PN 100 |
NET4GAS, a.s. | |
| PFZK 1100 It is intended for the separation of solid and liquid particles from wet, slightly polluted gas. |
Working substance: natural gas Maximum operating pressure: 8.0 MPa Maximum flow Qpmax: 110 m3/h Fractional resolution: - 99.98% for solid particles ≥ 1.0 µm - 99.3% for liquid particles ≥ 1.0 µm Inlet/outlet flange: 2" ANSI 600 RF |
NET4GAS, a.s. | |
| PFZK 2500 The PFZK gas filter is intended for the separation of solid and liquid particles from contaminated wet natural gas. The lid is fitted with a quick-release - locking flange. |
Working substance: natural gas Maximum operating pressure: 6.3 MPa Maximum flow Qpmax: 2500 m3/h Fractional resolution: - 98.9% for solid particles ≥ 1.0 µm - 98.6% for liquid particles ≥ 1.0 µm Inlet/outlet flange: 8" ANSI 600 RF |
NET4GAS, a.s. |  |
Eliška