JSA ENGINEERING & SERVICES–JSA ENGINEERING & SERVICES

Bellows (AISI 316 TI): This uses a Titanium-stabilized stainless steel bellow. The 2PLY or 3PLY refers to the number of layers in the bellow; more layers generally increase the pressure resistance while maintaining flexibility.
High-Temp Body Materials: The inclusion of WC6, WC9, and F22 indicates these valves are designed for high-temperature service (often found in power plants), as these are Chrome-Moly alloy steels.
Operation: Unlike smaller valves which are usually just hand-wheel operated, these can be fitted with Gears or Actuators for the larger sizes (up to 1100MM).

Category	Parameter	Specification
Size	MM	15MM TO 1100MM
Pressure Rating	Class	#150 / 300 / 600 / 800 / 900 / 1500 / 2500
End Connection		Flanged / Screwed / Socket Weld / BW
MOC (Materials)	Body	CS / FS / SS-304 / SS-316 / WC6 / WC9 / F22
	Internals (Trim)	13% cr. / SS-410 / SS-304 / SS-316
	Bellow	AISI 316 TI - 2PLY - 3PLY
Operation		Manual / Gear / Actuator
Certification		IBR / NIBR