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Screwed

Technical description
Filter for interior gas lines as per DIN 3386 with high dust storage capacity.

GF/1: Threaded connection as per ISO 7/1.
GF/3, GF/4 and GF: Flange connection as per DIN EN 1092-1.

Max. flow velocity: 20 m/s.

Installation option for pressure measurement point for filter monitoring.

Application
Type GF/1, GF/3, GF/4 and GF gas and air filter for protecting downstream fittings. Filter suitable for gases of families 1,2,3 and other neutral gaseous media.

  • Approvals
  • EC type testing certificate as per:
  • EC-Gas Appliances Regulation
  • EC-Pressure Equipment Directive
  • Approvals in other important gas consuming countries.

Functional description
Filter designed for installation in interior gas lines and compressed air lines to protect downstream fittings. Filter element made of random laid nonwoven polypropylene fabric and metal support frame with pore width of ≤ 50 μm. Dust, chips and rust as well as other physical gas-accompanying materials and fouling are retained using the random laid nonwoven fabric. If the dust storage capacity is exceeded or if there is an excessive pressure difference, the filter loses its protective function.

Installation
Refer to gas flow direction indicated by arrow on filter housing. Provide sufficient space for changing the filter element. If the filter cap is mounted in vertical position, it is easier to clean the filter housing. After installation, perform leak test.

  • Change filter element
  • At least once a year
  • If pressure difference has increased by 100 % compared to new filter
  • When pressure difference exceeds 50 mbar
Nominal flange size DN 40 DN 50 DN 65 DN 80 DN 100 DN 125 DN 150 DN 200
Flange connection as per DIN EN 1092-1
Max. operating pressure 4.0 bar (400 kPa)
Max. flow velocity ≤ 20 m/s
Ambient temperature -15 °C to +80 °C
Pore width of filter element ≤ 50 μm
Measuring gas connection G1/4 screw plugs as per DIN ISO 228 upstream and downstream of filter element, on left of housing
Materials Housing
Seals
Random laid non-woven fabric
Support Frame
Aluminium Cast
NBR
PP
Stainless Steel
Installation position Any, preferred position: with cap vertical
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