Flanged wedge gate valve with replaceable seal

VALVES

Flange gate valve replaceable stem F4

Type 2100
Working pressure PN10/PN16
Ductile cast iron GJS 500-7 or
Grey cast iron GJL 250
Diameters DN40 – DN300
Temp. max. 40°C – for water
Temp. max. 70°C – for other fluids

Soft sealing flanged gate valve with replaceable stem sealing, made of ductile iron or grey cast iron in short housing and coated with top quality epoxy resin anti-corrosion coating. Used mainly in water supply systems, waste water systems and systems for other chemically inert liquids (applies to DN40 and DN50).

APPROVAL

National Institute of Hygiene in Warsaw

TECHNICAL DATA

Flanged connection according to PN-EN 1092-2.
Installation length according to PN-EN 558+A1.
Maksymalny moment zamknięcia MOT=1xDN [Nm].
Requirements and tests according to PN-EN 1074 – 1 and 2
Industrial valves PN-EN 1171

CONSTRUCTIONAL FEATURES

Full, smooth, even and cavity-free passage.
The valve stem sealing may be replaced under full pressure in any position of the wedge.
A brass screw of the gate valve stem seal (replaceable) protected against unscrewing by a stainless steel spring ring, located inside the cover under the top seal.
Stainless steel non-lifting stem with cold rolled thread, with no notches in the sealing zone, making it possible to work with o-rings in the screw.
Triple sealing system of the stem: top seal, set of 5 o-rings (4 o-rings inside and outside the screw), bottom seal, lip seal.
Bottom washer made of polyamide PA6, which is a sliding washer to secure the low-friction bearing of the spindle.
Body and cover made of ductile cast iron EN-GJS 500-7 or grey cast iron EN-GJL 250.
Wedge made of ductile cast iron, vulcanized inside and outside with EPDM or NBR rubber, hardness 70±5°Sh. Guided in guides being an integral part of the gate body.
The thickness of the rubber on the wedge is at least 3 mm.
Wedge suspension nut on the stem – non-replaceable, made of brass, hot-dipped in the gate valve wedge, eliminating the possibility of wedge vibration.
Static seals made of EPDM rubber, dynamic seals made of NBR rubber.
Screws connecting the cover with the body – blind threads, fully protected against corrosion with paraffin-wax compound.
Internal and external corrosion protection with RAL 5015 epoxy powder paint with a minimum thickness of 250μm and a breakdown resistance of 3kV.