ZY-ZMA/BS pneumatic diaphragm angle regulating valve consists of a pneumatic diaphragm multi spring actuator and an angle valve. The angular valve has a small volume, light weight, and a top guide structure for the valve core, which has the characteristics of simple flow path, low resistance, and easy flushing. Suitable for regulating media with high viscosity, suspended solids, and granular media that require right angle connections.

■ Valve body

Type: Angle type single seat cast ball valve

Nominal diameter: 20, 32, 40, 50, 65, 80, 100, 125, 150, 200mm

Nominal pressure: PN1.6、4.0、6.4MPa

Flange standards: JB/T79.1-94~79.2-94, etc

Materials: cast steel (ZG230-450), cast stainless steel (ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti), etc

Upper valve cover: standard type -17~+230 ℃, heat dissipation type+230~+450 ℃, low temperature type -60~-196 ℃, bellows seal -40~+350 ℃

Cover type: bolt compression type

Packing: V-shaped PTFE packing, PTFE impregnated asbestos packing, graphite packing

Structural forms: standard type, heat dissipation type, low-temperature type, and bellows sealed type (see Figure 1-4 for details)

■ Valve components

Valve core type: single seat plunger valve core

Traffic characteristics: equal percentage characteristics and linear characteristics

Materials: Stainless steel (1Cr18Ni9Ti, 1Cr18Ni12Mo2Ti, 17-4PH, 9Cr18, 316L), stainless steel overlay with Stellite alloy, titanium, and corrosion-resistant alloys, etc

■ Executing Agency

Type: Multi spring thin film actuator

Spring range: 20-100 (standard), 40-200, 80-240, 20-60, 60-100KPa

Membrane material: Nitrile rubber with nylon cloth, Ethylene propylene rubber with nylon cloth

Gas supply pressure: 140-400KPa

Gas source interface: RC1/4'

Environmental temperature:- 30～+70℃

■ Valve action type

Gas closed type (B) - valve position open when gas is lost (FO); Pneumatic opening (K) - valve position closed when gas is lost (FC)

■ Attachment

Positioner (HEP type, YT1000 type), air filter pressure reducer, holding valve, travel switch, valve position transmitter, handwheel mechanism, etc