Pneumatic Eccentric Half-Ball Valve

Pneumatic eccentric ball valves can be equipped with a valve positioner to receive control signals (4-20mADC or 1-5VDC) and operate via compressed air supply. Alternatively, they can be fitted with travel limit switches, solenoid valves, pressure reducing valves, and a 0.4-0.7MPa air source to achieve on/off operation, while also providing two pairs of passive contact signals to indicate valve status. The pneumatic eccentric half-ball valve is an angular-travel regulating valve that controls fluid flow by rotating a portion of the ball valve plate around an eccentric axis.

Detail

Parameters

Technical Specifications

公称通径 DN(mm)		25	32	40	50	65	80	100	125	150	200	250	300
Rated Flow Coefficient KV	Full-cavity type	14	25	30	55	100	135	230	320	500	850	1300	1750
	60% cavity type	-	-	-	-	-	-	-	-	300	510	780	1050
	40% cavity type	6	10	12	20	40	54	92	128	200	340	520	700
Permissible pressure differential(MPa)		≤Nominal Pressure
Valve Body Type		Integrally cast spherical body
Valve Core Type		Eccentric Rotary Spool (with Flow Guide Wings)
Flow Characteristics		Approximately equal percentage
Range of motion		Fully open 60°
Leakage rate Q		Soft-sealed Class VI, hard-sealed Class IV, compliant with ANSI B16.104 standard
Basic error		±1%
Hysteresis		±1%
Dead zone		≤1%
Adjustable range		Full cavity type (100:1), 60% cavity type (60:1), 40% cavity type (40:1)
Configure the actuator		GT, AT, AR, AW Series Single-Acting and Double-Acting Pneumatic Actuators
Control Method		Two-position switch control, 4–20 mA analog signal control