Q641W-16P stainless steel pneumatic O-type cut-off ball valve

NegotiableUpdate on 03/11

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Nature of the Manufacturer: Producers

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Overview

The Q641W-16P stainless steel pneumatic O-type cut-off ball valve is suitable for two position cut-off and adjustment applications. The connection between the ball valve and the actuator adopts a direct connection method.

Product Details

DN20DN25DN32DN40DN50DN65DN80DN100DN125DN150DN200DN250DN300mm

Q641W-16P stainless steel pneumatic O-type cut-off ball valve

Product Overview:

Q641H and Q641Y pneumatic hard seal ball valves are suitable for two position cut-off and adjustment applications. The connection between the ball valve and the actuator adopts a direct connection method. Pneumatic metal sealed ball valves are suitable for working conditions with temperatures above 250 degrees Celsius. Pneumatic metal sealed ball valves are mainly divided into two sealing structures: one-way sealing and two-way sealing; Unidirectional sealing: can only seal in the specified direction indicated by the ball valve; Bidirectional sealing: capable of sealing in both directions; The structural forms of pneumatic hard seal ball valves are divided into floating ball type and fixed ball type; The connection forms include flange connection, welding connection, and threaded connection. Paired with an electrical valve positioner, it can control operation by inputting a 4-20mADC signal and a 0.4-0.7MPa gas source, achieving adjustments to parameters such as pressure, flow rate, temperature, and liquid level. It is also equipped with a travel limit switch, solenoid valve, pressure reducing valve, and 0.4-0.7MPa gas source to achieve switch operation and sendTwo pairs of passive contact signals indicate the opening and closing of the valve. Pneumatic hard seal ball valves have simple wiring, compact structure, small size, light weight, low resistance, stable and reliable operation, etc. Pneumatic hard seal ball valves are used in the mining, refining, processing, and pipeline transportation systems of oil, natural gas, coal, and ore; In chemical products and food; In the power systems of hydropower, thermal power, and nuclear power; In the water supply and drainage, heating, and gas supply systems of cities and industrial enterprises.

Main technical parameters and performance:

Nominal diameter (mm)	15	20	25	32	40	50	65	80	100	125	150	200	250	300
Flow coefficient Kv	21	38	72	112	170	273	384	512	940	1452	2222	3589	5128	7359
Nominal pressure (MPa)	PN1.6、2.5、4.0、6.4、10.0MPa
leakage	Hard seal: ≤ 10-5 of rated flow rate
Valve body form	Two section valve body (floating sphere)											Two section valve body (fixed sphere)
Valve core form	O-shaped spherical valve core
sealing packing	Polytetrafluoroethylene (PTFE), metal graphite wrapped gasket
connection type	Flanges, welding, threading
flow characteristics	Approximate fast opening characteristic
adjustable range	DN15-65							DN80-300
	250:1							350:1
Applicable Temperature	sealing surface
	Hard seal ≤ 450 ℃
Configure execution mechanism	GT, SR, ST, AT, AW series single and double acting pneumatic actuators
Control method	Two position switch control, 4-20mA analog control