... standard: API609 , BS5155 , MSS-67-1995Face to face : API598Tubing flange: BS/ DIN / ANSI / JIS/ ASE / ASD / BS10D ... valve .3.Flange Butterfly valve-(U type )Flange Butterfly valve , Electronic Flange Butterfly valve , Pneumatic Flange Butterfly Valve . ... , middle line flange butterfly valve ,Corrosion resistant butterfly valve.etc.7.Dismantling joint/ Coupling / flange adaptor. grey iron, ductile ...