Product Details

Manual Operated Balanced Labyrinth Control Valve (T48Y)

Brief Introduction
Straight Type Manual Operated Balanced Labyrinth Control Valve (T48Y)
Straight Type Balanced labyrinth control valve adopts the labyrinth cage and balanced plug design. The labyrinth sleeve is composed of cylindrical discs with many coaxially distributed labyrinths. According to different technological parameters of the media, different labyrinth specifications and piling layers are designed to form the cage and the cage divides the whole flow channel into several tiny circuitous or step flow channels, forcing the fluids to continuously change the flow direction and flowing area and gradually reducing the pressure of fluids, so as to prevent the occurrence of flash evaporation and cavitation and prolong the service life of the trim. The balanced sleeve plug is adopted. The closely fit plug and seat ensure very low leakage. The trim is suitable for service conditions under which blocked flow will easily be produced and cavitation will be caused.

Specifications of Straight Type Manual Operated Balanced Labyrinth Control Valve (T48Y)
Trim Features:    Sleeve guided balanced trim structure, labyrinth disc cage combination
Body Type:       Straight Through Type, Angle Type,
Bonnet Type:     Standard Type, heat dissipation type, cryogenic
Flow Characteristic: Equal Percentage, Linear, Quick Open
Shut-Off Class:     ASME B16.104 V (Standard Metal Seat),
                 ASME B16.104 VI( Shut-off Soft Seat)
Pipe Connection Type: Flange Type, Butt welding Type
Applicable Temperature Range: -196°C - 570 °C ( Double-Seat Structure),
Actuator Type:    Pneumatic Diaphragm Actuator,
                Pneumatic Piston Actuator,
                Electric Actuator..

Standard technical specification
Valve Body
Type:  Straight Through Single Seat Cast Steel Globe Valve
Size: DN20-300
Pressure: PN16~PN100, Class 150LB ~ Class 600LB
Connection: RF(Standard), Threaded, Welded
Flange Facing:  Raised Face
Face to Face dimension: GB12221-89
Material: WCB, 304,316
Bonnet Type: Gland
Packing:  V tupe PTFE,  Flexible Graphite
Gasket: Plain Type, PTFE, SS+Graphite
Valve Trim
Disc: Single Seat Plug Type
Sleeve: Metal Sealing(Equal Percentage, Linear)
       RPTFE (Equal Percentage, Linear)

Performance
Raded KV Value: Refer to Table 1
Flowing Features: Linear, Equal Percentage
Adjusting Range: 50:1
Leakage Rate: Metal Sealing should be below 0.01% ANSI B16.104-1976 Class IV
            Soft Sealing should be below 0.00001% ANSIB16.104-1976  Class VI
Allowable Deviation: 1%

Table 1: Kv Value & Action Time:

DN	Seat Dia	KV		Motor Model	Output Thrust	Rated Stroke	Action Time
mm	mm	Linear	Equal %	Motor Model	N	mm	s
20	20	6.9	6.3	381LSA-08/20	800/2000	16	3.8/7.6
25	25	11	10	381LSA-08/20	800/2000	16	3.8/7.6
32	32	17	16	381LSB-30/50	3000/5000	25	7.2/14.7
40	40	27	25
50	50	44	40
65	65	69	63	381LSB-50/SC-65	5000/6500	40	2.5/14.3
80	80	110	100
100	100	176	160
125	125	275	250	381LSC-99/160	10000/16000	60	30/60