Product Description

Pneumatic diaphragm single seat control valve GENERAL ZMA/BP Pneumatic diaphragm single seat control valve has adopted top-guided structure. Compact body structure, S-streamline liquid channel can supply big flow coefficient, wider rangeability and more precise flow characteristic. It has aseismatic and wearable characteristic because of big guided square in the core�s guided part. The seat closed performance was processed as perGB/T******2 standard and it matched a multi-spring diaphragm actuator structure, which is fit for the situation of top reliability, high/low temperature in good closed performance and small differential pressure. SPECIFICATIONS AND TECHNICAL DATA BODY Body style: Straight single seat foundry ball valve DN: *0~**0mm PN: PN*6, *0, *3,**0MPa Joint style: Flange (standard) Thread, welding (required by customer) Flange standard: Steel flange as per GB********0, JB/T**4 Format of sealing surface: Convex face for PN*6MPa, Convex &concave for PN *0, *3,**0MPa Distance between valve flange and flange surface as per GB*******9 Gland: Press-plate format Packing: V-pattern PTFE, soft graphite Gasket: Pattern��tooth-pattern and flat Material��..F4/reinforced F4, stainless steel and graphite INNER COMPONENTS Core: Single ram corn Metal hard seal: equal percentage (%C) Linear characteristic (LC) Soft seal: (Material: reinforced PTFE) Equal percentage (%C) Linear characteristic (LC) ACTUATOR Type: multi-spring diaphragm actuator structure ZH A/B**2, ZH A/B**3, ZH A/B**4, ZH A/B**5 Valve function way: direct acting, reverse Film material: nitrile rubber Dacron Spring range: *0~**0KPa,*0~**0KPa,*0~**0Kpa Air feed pressure: 0.*4~0.4MPa Signal tie-in: inside thread M*6*1.5 Ambient temperature: **0&#***1;~**0&#***1;