12с-8-7Э

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Production according to TR 3740-002-15365247-2004

Pipeline connection: flanged connection.
Installation position: on horizontal and vertical pipeline sections.
Climatic version: У, УХЛ, ХЛ, Т according to GOST 15150-69.
Placement category: 2, 3 according to GOST 15150-69.

Specifications

L, mm:	180
H, mm:	1180
h, mm:	18
D, mm:	610
D1, mm:	700
d, mm:	30
D2, mm:	745

DN, mm	PN, MPa	Tmax of the Medium, ºC	Body Material, Steel	Working Medium	Max. Pressure Differential, MPa	F, cm²	TQ, N•m, maximum torque at spindle plug	Full Stroke Rotation Number	Designation of the electric drive	N, kW	t хода, с.	n	Weight without Electric Actuator, kg	Full Weight, kg
600	0,1	400	09Г2С	Air, gases	22500	2640	250	0,25	МЭОФ-250/25-0,25У-99К	0,25	25	16	140	168

Legend

DN - Nominal Diameter
PN - Nominal Pressure
P - Pressure

Tmax - Maximum Design Temperature
Mкр - Spindle Torque
t - Response time
μ - Fluid Flow Coefficient

h - Valve Stroke
Kv - Throughput Capability
F - Seat Area
ζ - Resistance Coefficient

The rotary disc valves of type 12с are intended for the flow control of air and compatible stripped gases in the gas and air lines of the boiler unit.

The control is carried out through changing the area of passage section when turning the disc with the help of:

an actuator of single-turn electric flanged actuator (МЭОФ) type
installed on the top trunnion;
an actuator of single-turn electric actuator (МЭО) type through the lever.

The full opening of the valve corresponds to the disc turning by an angle of 90 from the closed position.

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