Knife Gate Valves

Because of Gate Valves ability to cut through liquids, gate valves, with modified gate, are often use in petroleum industries, specialty for extremely thick fluid, often knows as Knife Gate valves, is being used to cut through the liquids. Knife gate valves are ideal for applications that involves abrasive and corrosive slurries, powders or coarse substances. One of the benefit that these valves have is that the metal parts of the valves are not in contact with the slurry when open, only easily replaceable rubber ring sleeve or secondary seal touch the medium. The ring sleeves and seals are placed in the valve housing to seal against gate when the valve is closed and seals against each other when the valve is open. This tight seal contains the high internal line pressure. Double seated design provides bi-directional flow and tight shut off. Any material/medium discharged between the sleeves during stroking open or close is collected within the containment area of the valve body and drained via the multiple flushing ports in the body. The knife gate valves are also available with metal to metal seat with Uni-directional as well as bi-directional types.
Features:

• The knife gate valves are thin and simple in construction with lighter weight.
• The knife gate valves are the solution for the full bore without any restrictions.
• The standard and bolted bonnets for low emission with stainless steel gate.
• The design of the body and seat assures non-clogging shut off on suspended
• solids in the industries such as pulp and paper – power plants – waste water
• treatment plants – food and beverage – chemical plants – bulk handlin – mining – etc.
• The knife gate valves are designed according to MSS – SP – 81 and
• TAPPI – TIS405 for Industrial Services application.
• The knife gate valves are designed according to MSS – SP – 81 and
• TAPPI – TIS405 - 8 for Industrial Services application.
• Face to Face dimensions according to EN558.1 Series 20 ( DIN3202-K1)
• Standard flange connections ANSI B16.5 Class 150, EN 1092 PN6, 10, 16, 25
• BS “D” & “E”, ANSI Class125.
• Through Conduit normal or high performance Wafer – lug – or – flanged valves
• designed for media with high consistency. The double seat design assures non-
• clogging shut off either on normal or reverse flow.

Specifications:

•  Standard – MSS SP-81 applicable for :: Metal Seated, Stainless Steel,
• Bonnet Less and Flanged Knife Gate Valves.
•  Standard – ANSI B16.5 ( for 2” to 24” – 50 to 600mm) Flanges and Flange fitting
• ANSI 150 – Confirms to related drilling dimensions.
• Standard – ANSI B16.47 (for 26” to 48” 650 to 1200mm ) Large Diameter Steel
• Flanges Series A – Confirms to related drilling dimensions.
• Confirms to International Standards: DIN PN10 – PN16, ISO 7005 – 1/ PN10,
• ISO 7005 – 2 / PN16, JIS 10, BS 4504/PN10, BS4504/PN16, AS2129 Table D &
• E, SANS 1123 1000 and SAS 1123 1600.