Knife Gate Valve Bi-directional (DN50-1200) “Orbinox EB”

The Orbinox EB model knife gate is a bi-directional wafer type valve designed for general industrial service applications. The design of the body and seat assures non-clogging shut off on suspended solids in industries such as:

• Wastewater treatment plants
• Food and Beverage
• Chemical plants
• Agriculture
• Biogas plants
• Sludge Handling and storm tank

Sizes

DN 50 to DN 1200 (larger diameters on request)

Standard flange connection

EN 1092-2 PN16
Other flange connections available on request

Directives

2006/42/EC (MACHINES)
2014/68/EU (PED) Fluid: Group 1(b), 2 (Cat. I, mod. A)
2014/34/EU (ATEX)

Face to face dimensions acc. to EN558-1 series 20 (replaces DIN 3202-K1) up to DN500, for DN600 and above acc. Orbinox standard.

Working pressure

DN50 to DN125 – 16 bar
DN150 to DN250 – 10 bar
DN300 to DN400 – 6 bar
DN450 – 5 bar
DN500 to DN600 – 4 bar
DN700 to DN1200 – 2 bar

materials of construction

Orbinox EB Knife gate Valve Parts List view

1. Body : GJL 250 (GG25) / GJS 400 (GGG40)
2. Gate : AISI 304 (1.4301)
3. Seat : EPDM / Nitrile (On Request)
4. Packing : PTFE Impregnated Synthetic Fibre (ST) + EPDM O-Ring
5. Gland Follower : GJS400 (GGG40)
6. Stem : Stainless Steel
7. Stem Nut : Brass
8. Yoke : Carbon Steel – Epoxy Coated
9. Axial fixing bush : AISI 304 (1.4301)
10. Friction washer : PET + solid lubricant
11. Bushing : Bronze
12. Spring Pin : AISI 420 (1.4021) (ISO 8752)
13. Handwheel DN≤310 : Aluminium (AlSi12), DN≥410 : GJS400 (GGG40)
14- Slider (up to DN300) : Nylon

Design Features

BODY:
Wafer style cast monoblock design, internally machined up to DN 500, with reinforced ribs in larger diameters for extra body strength. Special design that includes a new manufacturing process, the machining of the body inside, allowing for more control in the different dimensions tolerances. This machining results in a perfect adjustment of the body with the gate and the seal, reducing the required torque to maintain the tightness and avoiding any build-up of solids that could prevent the valve from closing. The valve design allows an end-of-line installation from DN50 to DN500. The valve design changes from DN600 and above to a two-part bolted body, also internally machined. Full port design in all cases for greater flow capacity and minimal pressure drop. The gate is guided on the whole stroke to ensure bi-directional shutoff. Standard EPDM O-ring on both valve flange connections for sealing.

GATE:
Stainless steel gate, as standard. Gate is polished on both sides for a greater seal between the gate with both packing and seat. Gate is fully guided in the body allowing for bidirectional service.

PACKING:
Standard PTFE impregnated synthetic fibre (ST) with EPDM O-ring, with an easy access packing gland ensuring a tight seal. Long-life braided packing is available in a wide range of materials.

NON RISING STEM:
The standard stainless steel stem offers a high and long corrosion resistant life.

ACTUATORS:
All actuators supplied by ORBINOX are interchangeable, and supplied with an standard mounting kit for installation purposes 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. The ORBINOX standard colour is RAL-5015 blue.

GATE SAFETY PROTECTION:
ORBINOX EB automated valves are provided with gate guards in accordance with EU Safety Standards. The design feature prevents any objects from being caught accidentally while the gate is moving.

OTHER MATERIALS:
On request, following materials can be also supplied:
Body: CF8M on some sizes / Gate: AISI 316 or 316Ti / Stem: AISI 316 or 316 Ti

Orbinox EB Variations – available upon request

Body : Cast Iron / Cast Steel

Seats & Seals : EPDM / Nitrile / Viton

Packing : PTFE impregnated synthetic fibre (ST) / Dynapack (DP) / Dry cotton (AS) / Braided PTFE (TH)

Actuation
Manual : Handwheel (non-rising stem) / Handwheel (rising stem) / Chainwheel / Lever / Bevel Gear / Others (square nut)
Automatic : Electric (rising & non-rising stem) / Pneumatic (single & double-acting) / Hydraulic

Available in many other actuated & accessorised options, see Orbinox “EB” Series Catalogue & Datasheet

Orbinox Certificates & Directives Compliance

Orbinox Installation, Operation & Maintenance Manual