Pneumatic multi-stage pressure control valve

Pneumatic multi-stage pressure control valve Product detail

This kind of product is a pressure-balanced high-pressure cage regulating valve. The valve body flow channel is S streamline, with small pressure drop loss, large flow rate, wide adjustable range, control valve and multi-spring film actuator. Compact and powerful, the valve has good dynamic stability, low noise and small cavitation corrosion. It is suitable for high voltage drop occasions in the power station industry.

The main technical parameters

Valve body
Type: straight through cage casting ball valve
Nominal diameter: DN40～200
Nominal pressure: PN1.6, 4.0, 6.4MPa
ANSI CL150, 300, 600
Connection type: flange type PN150, 260, 420 convex and concave
ANSI 16.5 RF, RJ Butt Weld
Body and bonnet material: WCB(SCPH2) CF8(304)
CF8M (316)
Internal material: CF8 (304), CF8M (316), 17-4PH
Stellife 6#
Applicable temperature: normal temperature type -40～230°C
Medium temperature type -40～450°C
Gland type: bolt compression type
Filling: Asbestos braided packing

In-valve assembly

Spool type: metal seat pressure balanced spool
Flow characteristics: equal percentage (%), linear (L)
Leakage: GB/T4213 Class III
Seal type: metal seal, surfacing

Executive agency
Type: LA(B) multi-spring film actuator
Spring range: 80 ~ 240KPa
Supply pressure: 0.28MPa
Air source interface: M14×1.5
Ambient temperature: -40 to +70 °C
Accessories: electrical valve positioner,
Pressure reducing valve, hand wheel mechanism, etc.

CV value and itinerary

DN (mm)		40			50			65			80			100			150			200
Seat diameter		25	32	40	32	40	50	40	50	65	50	65	80	65	80	100	100	125	150	125	150	200
CV	Equal percentage	12	17	25	17	25	52	25	52	78	52	78	110	78	110	180	180	270	375	270	375	650
	Linear	12	20	30	20	40	62	30	62	90	62	90	135	90	135	210	210	330	485	330	485	700
Rated stroke(mm)		25						40									60

 

Actuator standard configuration and handwheel mechanism

DN	40	50	65	80	100	150	200
Executive agency	LA(B)-23		LA(B)-34			LA(B)-45
Handwheel mechanism	TH-23		TH-34			TH-45