Bellows Seal Single-Seated Control Valve

Main features:
1) Standardized, modular design, reliable functions
2) Valve base: clamped-in seat ring structures, discontent without suits, convenient
    on-site maintenance and replacement
3) Avoid valve stick coming off by the integrated structure of valve core and valve
    stick
4) The intensity of valve stick is times of regulated ones, with invariable bending,
    design of the valve core and valve stick are distinguished from standards-based
    one (low noise eliminates gas piping type), which have a longer using term
5) Higher ability of anti-gas corrosiveness and noise-reducing performance, only
has
    to replace the valve base when applied for different kinds of needs
5) Stuffing box is designed for better maintenance, safe and reliable
6) Stuffing box system increased dust sets can effectively prevent dust and debris
    from entering into the gland box
7) Valve body and the cage-like devices valve body are fully committed to the
    replacement of valves, online components
8) ASME vessels are based on standard designs, can be used safely, and suitable for
    severe circumstances

A2200 series uses corrugated pipes sealed structure to overcome fill aging and
temperature range sensitive weaknesses, and completely eliminates the possibility
of media leaking from valve sticks' moving gap room to outside, and can be widely
applicable for rare occasions that contain highly toxic, strongly corrosive and
radioactive nature of media

Main technical parameters:
1) Nominal size: DN20~200
2) Nominal pressure: ANSI150~600, PN16~100 
3) Flange standards: ANSI B16.5
4) Flange distance: ANSI/ISA
5) Leakage class: ANSI B16.104 IV, V, VI

Characteristics:
1) Equal percentage, linear, quick
2) Rangeability: 50:1
3) Temperature range: -45 ~ +350oC
4) Bellows materials: SUS304, SUS316L