M 7421
Features
• Bronze body with BSPT-threaded connections.
• Stainless steel stem and brass plug.
• Low seat leakage rate (≤0.05 percent of Kvs).
• Spring-loaded, self-adjusting packing.
• Accurate positioning to ensure state of the art temperature control.
• Sizes range from 1-1/4 in. to 2 in
Specifications
Action: Stem up to close port A-AB
Nominal pressure rating: 20 bar (300 psi)
Flow characteristic: See Fig. 2
Equal percentage port A-AB
Linear port B-AB
Rangeability: 50:1
Leakage rate: ≤0.05% of kvs
Stroke: 20 mm
Valve body:
Pipe connections: Internal BSPT-threaded
Material: Bronze
Dimensions: See Fig. 1
Trim:
Seat: Integral brass (upper)
Replaceable brass (lower)
Plug: Brass
Stem: Stainless steel
Packing: Spring loaded carbon fiber
reinforced PTFE V-rings
Medium temperature and
pressure: Water 2 to 120 °C max. 20 bar
