50L08 Ultra-small flow regulating valve

Technical Parameters Structure and materials Specification parameter Quality Assurance

Our 880L ultra small flow needle valve is a kind of top guide single seat valve, it has a simple structure, good sealing performance, reliable use and so on. The top guide system is effective enough to overcome the small opening shock, effective and long service life. A smaller flow coefficient is chosen to increase the use of the valve. Multi spring pneumatic film mechanism or electric actuator can be selected.
The valve is the use of GEROYAL technology, professional development of a small flow of the operating conditions of a product. The body is small in size and light in weight, and the inner screw thread structure is more convenient to be installed and disassembled. The whole body has the characteristics of small size, light weight, high performance and precise control of micro flow.Does not apply to the medium of the more dirty occasions, adjusting the media containing granular media, should be aimed at the problem of small throttle clearance, pay attention to prevent the occurrence of blocking card phenomenon. Especially suitable for liquid, steam and other media in the mainstream of the regulation.
required.

Design features

The small opening range can be adjusted continuously
The top guide structure, anti vibration
The valve cone seal, the sealing effect is good
Multi word design, good adjustment performance
Valve seat spray welding hard alloy, corrosion resistance, long life
Small size, light weight, easy to install
The actuator mounted interchangeable

Technical parameter

Body form：Straight through type forging valve body
Spool form：Non balance type single seat valve
Nominal diameter：DN8~25 NPS 1/4"~ 1"
Nominal pressure：PN1.6～32.0MPa；CALSS 150～1500 LB
Applicable temperature：-196～+650℃（Optional）
Connection form：Flange, Welding, Screw thread
Flange distance：Meet IEC 60534、Non-standard customization
Gland form：Bolt pressing type
Sealing gasket：Metal graphite gasket, PTFE
Seal up：PTFE, flexible graphite
Actuator：Pneumatic actuator, electric actuator


1	Body	WCB	LCB	WC9	CF8	CF8M	CF3M
2	Shim	316+Graphite / FTFE
3	Seat	304	304	304	304	316	316L
4	Spool	304	304	304	304	316	316L
5	Shim				316+Graphite / FTFE
6	Guide sleeve	304	304	304	304	316	316L
7	Copper sleeve	Cu / 316LCu / 316L
8	Screw	304	304	304	304	316	316L
9	Valve cover	WCB	LCB	WC9	CF8	CF8M	CF3M
10	Valve stem	304	304	304	304	316	316L
11	Packing	Graphite / FTFE
12	Lock nut	304	304	304	304	316	316L
13	Pressing ring	304	304	304	304	316	316L
14	Plate	304	304	304	304	316	316L

Specification parameter

（CV） Flow coefficient	Percent					0.25	0.1	0.4	0.63	1.0
（CV） Flow coefficient	Straight line	0.01	0.04	0.1	0.16	0.25	0.1	0.4	0.63	1.0
DN（in）	trip	Optional flow coefficient CV （★ Conform to IEC ● Recommend）
8 1/4”	16mm 25mm	●	●	●	●	●	●	★	★	★
10 3/8”		●	●	●	●	●	●	★	★	★
15 1/2”		●	●	●	●	●	●	★	★	★
20 3/4”		●	●	●	●	●	●	★	★	★
25 1”		●	●	●	●	●	●	★	★	★
Actuator		Pneumatic actuator：ZHA/B；Electric actuator：3810、PSL

Control valve selection
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case analysis
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Provide higher implementation standards
As one of the pressure control valve pressure piping components shall be in strict accordance with relevant industry standards in design, production and testing, in strict accordance with relevant industry standards GEROYAL control valve products and design, production and testing according to a higher standard version for customers.