Products

Knife gate valve with rubber sleeve:

Operating principle
The knife gate valve wafer type, which can be install between flanges is designed for application in a wide range of industries. The double seat ensures bi-directional tightness of the valve. The construction of the body protected by the two rubber bushings make the valve extremely suitable for use in highly abrasive working environments in industries such as:

● Mine
● Energy
● Chemical
● Waste water
● etc.

Parameters
Nominal diameters:
From DN50 to DN900 (larger diameters on request)

Working pressure:
From DN50 to DN400 – 10 bar
From DN450 to DN600 – 6 bar
From DN700 to DN900 – 5 bar

Standard flange connections:
DIN PN10
ANSI B16.5 (class 150)

Work temperature:
From -30˚ С up to 120˚ С

Materials:
Body: cast iron (0.7040, GJS 400)
Rubber bushings: Natural rubber, EPDM, Neoprene, Nitrile, Chlorobutyl

Types of operating:
Manual (with handle or manual gearbox)
Pneumatic drive
Hydraulic drive
Movement powered by electricity

Shut off Knife gate valve:

Operating principle
The knife cutter is single-pass with inter-flange mounting for general application in industries. The design of the body and seat prevents the valve from blocking when closing due to the presence of dense media in industries such as:
● Pulp and Paper
● Energy
● Waste water treatment
● Chemical
● Food tasting and brewery
● Bulk cargo
● Mine
● etc.

Parameters
Nominal diameters:
From DN50 to DN1200 (larger diameters on request)

Working pressure:
From DN50 to DN250 – 10 bar
From DN300 to DN400 – 6 bar
From DN450 – 5 bar
From DN500 to DN600 – 4 bar
From DN700 to DN1200 – 2 bar

Standard flange connections:
DIN PN10
ANSI B16.5 (class 150)

Работна температура:
From -30˚С up to 250˚С

Materials:
Body: cast iron (GG25), stainless steel (CF8M)
Seat: Metal, EPDM, Nitrile, Viton, Silicone, PTFE

Type of operating:
Manual with withdrawable or non-retractable spindle (with handle or manual gearbox)
Pneumatic drive
Movement powered by electricity

Accessories:
– Reinforced saddle for longer life
– Deflector for the saddle preventing its injury.
– Saddle wash nozzles
– Closed housing suitable for working environment gas.

Bi-directional knife gate valve:

Operating principle:
The knife cutter is two-pass with inter-flange mounting for general application in industries. The design of the body and seat prevents the valve from blocking when closing due to the presence of dense working environments in industries such as:
● Waste water
● Chemical
● Food tasting and brewery
● etc.

Parameters
Nominal diameters:
From DN50 to DN1200 (larger diameters on request)

Working pressure:
From DN50 to DN250 – 10 bar
From DN300 to DN400 – 6 bar
From DN450 – 5 bar
From DN500 to DN600 – 4 bar
From DN700 to DN1200 – 2 bar

Standard flange connections:
EN1092 DIN PN10

Work temperature:
From -30˚С up to 200˚С

Materials:
Body: cast iron (GG25)
Seat: EPDM, Nitrile, Viton

Type of operating:
Manual with non-retractable spindle (with handle or manual gearbox)
Pneumatic drive
Hydraulic drive
Movement powered by electricity
We look forward to your inquiry at office@polymat-bg.com.