Standard Technical Parameters

Valve body
Type: Single seat, double seat, sleeve
Nominal diameter: DN20-DN200
Nominal pressure: PN16, PN25, PN40, PN63, PN100
Connection: Flange, thread, weld (Or other customer specifi ed)
Sealing surface: PN16 convex surface, PN40, PN63, PN100
concave surface
Material: WCB, 304, 316, 316L
Structure: Standard type (-20℃~+200℃)
Low temperature type (-60℃~-196℃)
Cooling type (-40~450℃)
Bellows seal type
Gland type: press plate
Packing: V type PTFE, fl exible graphite

Valve components
Core type: single seat plunger type
Core seat: 304, 316+ SLT
Flow characteristics: Equal percentage, linear, quick-opening

Actuator
Type: Multi-spring diaphragm actuator
Action type: Direct action, reverse action
Diaphragm material: NBR rubber reinforcing polyester fabric
Spring range: 20~100KPa, 40~200KPa, 80~240KPa
Supply pressure:0.4~0.5MPa

Action type:
Air to close FO (With direct action actuator), when the air supply failure, actuator spring open the valve
Air to open FC (With reverse action actuator) When the air supply failure, actuator spring close the valve
Accessories (Configured according to requirements)
locator, air fi lter pressure-relief valve, hand wheel device, limit switch, solenoid valve, lock up valve and others.

Performance
Rated KV value: Reference table
Flow characteristics: Linear, equal percentage, quick opening
Adjustable range: 50:1
Leakage class
Metal seal: Less than 0.01 (ANSI B16.104-1976IV)
Soft seal: Less than 0.00001%
Hysteresis: Less than full stroke 1% (With locator) Less than full stroke 3%~5% (Without locator)
Basic error: Less than full stroke ± 1% (With locator) Less than full stroke ± 5% (Without locator)

Flow Characteristic Curve

Rated Flow Coefficient and Stroke Parameter

Dimension

Weight Table