GOGGLE VALVES
GOGGLE VALVES
The VCL Goggle Valves are typically used for gaseous media, even with high dust content. They comply with Safety Regulations for “man-safe” shut-off devices, which in a closed position must positively prevent the ingress of toxic gas into accessible ducts to allow maintenance or inspection activities. Even in the event of a leakage the gas can either escape to the atmosphere (open design) or is collected in the hoods of the enclosure and can be safely extracted (enclosed design).
DESIGN FEATURES OF
GOGGLE VALVES
- Fabricated construction
- Valve actuation in accordance to customer‘s requirements (man. / electr. / hydr. / pneum.)
- The actuating system for clamping and unclamping is available in either a hydraulic or mechanical version
- Available as open or enclosed design (with hoods)
- Pressure rating up to 6.0 bar
- Service temperatures up to 350 °C
- On demand, electric control cabinets for automatic operation as well as hydraulic units are available
- Nominal sizes up to DN 4000
- Stainlees steel clamping cylinder
- Other sizes or operating conditions on request
DESIGN
ADVANTAGES
- Absolutely gas-tight, so called “man safe” isolation device, used for toxic gaseous media (even with high dust content)
- Even in the event of a leakage the gas can either escape to the atmosphere (open design) or is collected in the hoods of the enclosure and can be safely extracted (enclosed design)
- After traversing, the valve plate is clamped between the body sealing surfaces and is sealed by elastic seals inserted into grooves on the sealing faces of goggle and blind
- In the event of power loss the valve remains tight, as the required sealing force is created by spring-loaded clamping devices
TYPE I
FEATURES
- Clamping/unclamping devices are accessible/changeable from the outside during operation
- One single, firmly piped hydraulic system for goggle & blind
- Hydraulics are not exposed to full thermal load
- The expansion joint can be accessed/exchanged in dismantled condition
- Goggle & blind are centered by a mechanical guiding system
TYPE II
FEATURES
- Clamping/unclamping cylinders are accessible / changeable from the outside in the unclamped section during operation
- The expansion joints are accessible/changeable in the unclamped section during operation
- Goggle & blind are centered (no complex mechanical guiding system required)
- Independent oil supply for goggle & blind
(double quantity of cylinders!)
TYPE III
FEATURES
- Clamping/unclamping devices are accessible/changeable from the outside during operation
- One single, firmly piped hydraulic system for goggle & blind
- Hydraulics are not exposed to full thermal load
- Goggle & blind are centered by means of two expansion joints
- Two expansion joints and double quantity of clamping/unclamping cylinders are required. The expansion joints can only be accessed/
exchanged in dismantled condition
