Manual Knife Gate Valve - World's Largest Gate Valve

Ductile iron wafer knife gate valve with resilient seat (NBR) and 316 stainless steel gate. Operated by a rising stem hand wheel and suitable for up to 10 BAR media pressure. Great for effluent, sewerage treatment plants, and other applicable media (not recommended for abrasive media which will sit in seats).

What is a Manual Knife Gate Valve?

A knife gate valve is a shut-off valve, which means that it is used to start and stop the flow through a pipeline. It is mainly used in fluid-based applications and settings, especially those that involve a dense material.

The “knife” blade that is built in the valve uses its sharp edges to cut through tough or sticky material. The valve uses a pressure drop function to achieve this function and stops the flow when required.

Structure of Knife Gate Valve

The structure of the body and seat eliminates clogging shutoff for flow with fine particles. Additionally, a beveled knife edge helps the gate cut through thick media easily. According to the different working situations: non-rising stem knife gate valve, wafer knife gate valve, lugged knife gate valve, pneumatic knife gate valve, electric knife gate valve, manual knife gate valve and bevel gear knife gate valve are all available.

Product Overview of Knife Gate Valve

Size Range:	DN50~600mm NPS 2”-24” （Larger size on request）
Max Working Press.：	DN50~DN250: 10Bar NPS2~NPS10：150Psi DN300~DN450: 7Bar NPS12~NPS18：90Psi DN500~DN600: 4Bar NPS20~NPS24：60Psi
Temp. Range：	-29…+200℃
Seal Tightness：	According to MSS SP-81
Body Material：	Cast Iron, Stainless Steel
Gate Material:	Stainless Steel Chrome Plated, Special Alloy
Seat Material:	EPDM (120°C) /Viton(200°C) /NBR(90°C)
Face to Face:	MSS SP-81
Flange Standard:	GB/T 9113.1, JB/T 79.1, HG 20592, ASME B16.5, EN1092-1