*Valve body ,bonnet is made of low alloy steel or stainless steel. Seal surfaces of gate and seat are made of tungsten carbide . *Feature and Benefits:metal to metal seat/gate seal,metal to metal stem backseat,metal to metal body/bonnet assembly
Designs and quality control for flat gate valves completely conform to API Spec.6A and NACE Standard MR0175. They are provided with hard facings,parallel discs,spring preloaded seats,and lip packing, so the corrosion and erosion resistance,reliable sealing characteristics and low torque operation are available.
*Valve body ,bonnet is made of low alloy steel or stainless steel. Seal surfaces of gate and seat are made of tungsten carbide . *Balanced stem valve is for high pressure service. The use of second stem balances out the body pressure acting against a single stem.this eliminates the thrust load carried by the bearing. *Feature and Benefits:metal to metal seat/gate seal,metal to metal stem backseat,metal to metal body/bonnet assembly
*Hydraulic Gate valve can be operated remotely. *Feature of hydraulic gate valve is as same as gate valve.
*Surface safety valve can be used in Christmas tree master and wing valve ,shutdown valves, and pipeline control valves. *Hydraulic safe valve is a terminal performance mechanism in well safety system. *Safety valve can be closed automaticly when danger signal is sent to safe system.