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DESCRIPTION The ET Model 20 Series knife gate is an uni-directional lug type valve designed according to MSS-SP-81 and TAPPI TIS 405-8 for industrial service applications. The design of the body and seat assures non-clogging shut off on suspended solids in industries such as: • Pulp and Paper • Chemical plants
• Power plants • Wastewater
FEATURES
• Body: One piece integrally cast stainless steel body with reinforced ribs in larger diameters for extra body strength. Internal cast gate wedges and guides allows for tighter shutoff. Bore design according to MSS-SP-81 and Tappi TIS 405-8. Internal design avoids any build up of solids that would prevent valve from closing. • Gate: Standard AISI 316 stainless steel gate. Gates polished and lapped for a greater seal between the gate with both packing and seat. Bottom of the gate edge is machined to a bevel to cut through solids for a tighter seal in the closed position. • Seat: (resilient) Unique design that mechanically locks the seat in the internal of the valve body with a stainless steel retainer ring. Standard EPDM; also available in different materials such as Viton, PTFE, etc.
• Packing: Standard braided PTFE impregnated fiber with EPDM o-ring for better shut off, with an easy access packing gland ensuring a tight seal Long-life braided packing is available in a wide range of materials. • Stem: The standard stainless steel stem offers a long corrosion resistant life. For rising stem handwheel actuators only, a stem protector is provided for additional protection against dust while the valve is in the open position. • Actuators: All actuators supplied by ORBINOX are interchangeable, and supplied with a standard mounting kit to allow for installation on site. • Yoke or Actuator Support: Made of Epoxy coated steel (stainless steel available on request). Compact design makes it extremely robust even under the most severe conditions. • Epoxy Coating: The epoxy coating on all ORBINOX cast iron and carbon steel valve bodies and components is electrostatically applied making the valves to be corrosion resistant with a high quality finished surface.
SPECIFICATIONS Sizes
Working Pressure DN 2”/50mm to DN 36”/900mm (larger diameters on request)
DN 2”/50mm to DN 24”/600mm: DN 30”/750mm: DN 36”/900mm:
Standard Flange Connection DIN PN 10 and ANSI B16.5 (class 150) Others on request
Directives DIR 2006/42/EC (MACHINES)
DIR 97/23/EC (PED) Fluid: Group 1(b), 2 (Cat. I, mod. A) DIR 94/9/EC (ATEX)