Lock rotary BUTTERFLY KV-7 (Turkey)

The lock disk rotary BUTTERFLY (Butterfly stroke) is used as the locking regulating fittings, the principle of work of a lock disk is constructed so it can work in situation "is open" or "closed", and also to regulate an expense of a working environment.

The lock disk consists of the cylindrical case which passes through itself(himself) a working environment, in the case the disk which, rotating round its pivot-center nestling on a sealing surface is located, blocks a stream of a working environment, moving in the opposite direction, on 90 ° the lock disk completely opens. The lock disk can be used as the control device, regulating a stream of a working environment on degree of turn of a disk on an axis.

Diameters of Du: 25-150 mm.
Temperature of a working environment: to 130 °C.
Maximum pressure: 1,6 MPas.
Locks are disk, accession type: Flange in accordance with GOST 12820-80.
Working environment: fresh water, sewage, air.
Tightness class: "And" in accordance with GOST 9544-93.
Locks rotary consist:
Case: GG25 cast iron.
Disk: GGG40 cast iron.
Shaft: AISI 316 steel.
Spline: Steel.
Sealing ring: EPDM (ethylene is sawn through a monomer diene (M-class) rubber).
Plug: Bronze.