4'' DN100 Fire Fighting Equipment FM UL Approved 350psi Swing Check Valve with Grooved End

We NINGJIN APC INDUSTRIES CO.,LTD.  have full range of fire valve and hydrant , Our following products are with FM and UL  approval and we are geting Competitive price 
Butterfly valve ( wafer and grooved 2.5''-12'' ); 

Fire hydrant  6'' ( Dry barrel and Wet barrel )

Gate valve ( 200psi and 300psi , with flanged ,  flanged * grooved,  grooved, MJ,  MJ* Flange   ) 

Indicator post  ( vertical type and wall type  ) 

Swing check valve ( flanged ,  flanged * grooved,  grooved  ) 

Besides we are developing Wet alarm valve,  Degule valve , Pressure reducing valve ,Air vent valve, Pressure Releasing valve , Backflow preventer ,Water flow switch , angle  valve , and will also get FM UL  . You have FM UL valve market , i think we will have chance to coopere .

We APC  have our own foundry , machining workshop , coating workshop , assembly line and quality control system . And we have 20 year exporting experince . We will be your qualified supplier