Features
BI-DIRECTIONAL SEALING
With the bi-directional sealing design of KAVAL floating ball valves, either end can be installed upstream without compromising the integrity of the bubble-tight seal.
FLOATING BALL DESIGN DELIVERS TIGHT SEAL
The ground and polished ball is free to float and mates perfectly with the conical seats for a positive leakproof seal. Self cleaning and self adjusting, the ball is also pressure activated. The higher the line pressure, the tighter the seal.
DEEP RECESSED SEATS
The seat is recessed into a deep machined pocket, which serves to surround and protect the seat on all sides. This design eliminates cold flow of the soft seats into the valve conduit where the seats can be damaged by the action of the ball or the flow medium. The result is extremely long service life.
DOUBLE PACKING SEAL AND LIVE LOAD FEATURES
Primary 0-ring and secondary fire safe flexible graphite stem seal are standard for all KAVAL ball valves which provide low break torque, excellent emission control, and good chemical and thermal resistance. Belleville spring washers are used to achieve live loading and minimize the need to retighten packing.
BODY SEAL
PTFE as primary body seal, fully captured graphite packing provided secondary fire safe seal.
FIRE-TESTED FOR SAFETY
All KAVAL valves are qualified under API STD 607. The pocketed seat and locked in stern design con-tribute to its excellent fire proof characteristics. Should the soft seats be destroyed by fire, the ball floats downstream, providing a tight metal to metal seal against the lip of the seat pocket. If the primary seals are destroyed, the secondary graphite seal both on the body connection and on the stern retarl:Is external leakage.
INTEGRALL ISO ACTUATOR MOUNTING PAD
Top work flange dimensions are in accordance the IS05211 standard, which provides easy installation of actuators and locking device.
INDICATOR HANDLE
The design of the handle installation on the stem in the correct position only, in alignment with the ball port. When the handle is aligned with the pipe, the valve is open. When the handle is perpendicular to the pipe, the valve is closed.
BODY AND TRIM MATERIALS
The standard valve body materials are Stainless Steel. Carbon Steel. Other materials are also available. Standard trim materials are 316 Stainless Steel and Carbon Steel. Trim material such as Hastelloy-C. Alloy-20. Monel and other materials are available for specific applications.
PRESSURE/TEMPERATURE RATINGS
The pressure-temperature ratings for KAVAL's floating ball valves are determined by the body material and the seat material rating. The chart is indicative of the standard seat materials, for ratings of other materials, contact the technical department of KAVAL.
