plaquette d'information sur les vannes GEFA pour centrales de biogaz

GEFA valves for biogas plants fulfill the users' highest requirements.

DOMINO gate valves: High security by cutting effect with the closing procedure.

KG butterfly valves: High life span by solid seat system.

Executions

• Body: Cast iron GG-25, EKB-coated (option GGG 40)
• Gate: 1.4301 (option 1.4571)
• Seal: NBR, EPDM, FPM, MVQ, PTFE
• Mounting parts: steel, EKB-coated or zinc coated
• Stem / piston: 1.4021 (option: 1.4571) rising or non-rising

Operation Accessories

• Handwheel
• Mechanical limit switches
• Square
• Proximity switches
• Gearbox
• Solenoid valves
• Pneumatic cylinder
• Positioners
• Hydraulic cylinder
• Stem extensions and pillars
• Electric actuator

DOMINO gate valves Special executions

• High security by cutting effect with the closing procedure
• Valve with regulation port
• Full bore
• Square valve

The maintenance-free COMPACT cross seal (double seal lip profile) guarantees tight shutoff and can be adjusted without interrupting the working process. The self-cleaning effect is achieved by flush-out corners in the body and the cutting edge underneath the gate. Solids and fibres are cut by the cutting edge before tightening is done against the elastic seat. The guidance of the gate is interrupted on stroke length, thus dirt can be ejected. Bidirectional shutoff is achieved by the lateral gate surfaces and the elastic seat which is integrated in the body. The seat is chambered and prestressed mounted. The high finish of the guide- and sealing surface at both sides guarantees long service and tight shutoff. The lateral guidance of the gate prevents the gate from fluttering in either of the flow directions or in throttle positions.

Advantages

• Centre-mounted process valve for safe and secure industrial usage
• Economic initial equipment with single-piece housing construction

KG butterfly valves

• High life span by solid seat system
• Elastomer-lined with seat ring as multifunctional sealing element

Type KG 2 [ DN 50 – DN 300 ]: Wafer type butterfly valve for installation between flanges DIN EN 1092-1, PN 10/16, ANSI 150.

Type KG 4 [ DN 50 – DN 300 ]: Lug type butterfly valve for installation between flanges DIN EN 1092-1, PN 10/16, ANSI 150.

Technical Data:

• Single-piece body, self-centring
• Face to face dimensions: DIN EN 558-1 series 20 (DIN 3202-K1)
• Top flange: DIN 3337 - ISO 5211
• Test: EN12266-1, P10/P11/P12-A, DIN 3230, T3 - BA/BO-1
• Control range: 20° - 60° Opening angle

GEFA Processtechnik GmbH Dortmund is a specialised manufacturing operation in the industrial valve, filtration technology, and measurement and control technology sectors. The company was founded in 1964 and was one of the first to carry the three-piece ball valve, soft-seated butterfly valves, and pneumatic rack & pinion actuators. In the filtration technology sector, an innovative product line was introduced to the German market by GEFA. The company has been certified since 1992 in accordance with EN ISO 9001 and offers products of the highest reliability and safety. We also have a broad product range available for specific applications. The extensive inventory (5 million euro) guarantees short delivery times.

Legal structure: Limited company

Ordinary capital: 1.54 million euro

Executive director: Dieter Maier

Formation and development: The company was registered in the commercial registry as a limited company on 15.09.1965

Industrial sectors and products: Industrial valves - Measurement and control technology - Filter technology

Employees: 82 employees

Volume: Approx. 25 million euro

Business premises: The office and operational buildings (Germaniastrasse 28 in Dortmund) are owned by the company, office building / workshop and warehouse 5,450 square metres, company property approx. 13,000 square metres

Warehouse: Approx. 5 million euro

Edition: 07-2011

Contact: Germany
Germaniastraße 28 Phone 0049-2 31-610 09-0
D-44379 Dortmund Fax 0049-2 31-610 09 80
P.O. Box 70 01 10 www.gefa.com
D-44371 Dortmund gefa@gefa.com