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GENERAL INFORMATION
INSTRUCTION & FEATURES
The traditional style of line blind offers a broad range of pressures and a lower cost. The basic standard for line blinding for many years. After turning 3~7 jack bolts around the body to make a gap by round bar or wrench and then change the blind plate position. Pipe line needs to be spreaded for operation.
TECHNICAL SPECIFICATIONS
NOMINAL DIAMETER
NPS 1/2 (DN15) - NPS100 (DN2500)
TEMPERATURE RANGE
Standard Design : -20℃ ~ +200℃
High Temp. Design : +200℃ ~ +816℃
Cryogenic Design : -196℃
PRESSURE RATING
ASME Class 150 to Class 1500
Other presure classes up to ASME 2500
# available upon request
MATERIALS
BODY : Carbon Steel, Stainless Steel, Special Material (Duplex, Hastelloy, Monel, Inconel etc.)
BLIND : Stainless Steel, Special Material (Duplex, Hastelloy, Monel, Inconel etc.)
MOVING PARTS & SEALING SURFACE are Anti-corrosion Materials
FUNCTION
Gas & Liquid Perfect Isolation( Zero Leakage )
OPERATION METHOD
Manual Operation
Electric, Pneumatic or Hydraulic Operation
Part & Description
Operating Instruction
1). Before turning the handwheel to change the blind plate position, internal pressure of the valve must be drained and be sure no pressure(Zero).
2). Unlock locking device for turn to handwheel
3). To change the blind plate position, turn the handwheel clockwise until indicator reaches to “Open” mark.
4). When indicator is on “open” mark, change the blind plate position to open or close.
5). After change the blind plate position, turn the handwheel counter-clockwise until indicator reaches to “Close” mark to tighten the seat.
6). Lock locking device for can’t use ahourized person
APPLICATIONS
REFINERY - Ethlylene Furnace | CHEMICAL PLANT - Reactor Blowdown | OFFSHORE - FPSO | STEEL - Coke Oven Gas | POWER PLANT - Coke Oven Gas |