Nominal size

4"～80"（DN100～DN2000）

The biggest size manufactured: 160" (DN4000)

Disc form

Damper   type (See Fig. 2-1)

Back   Seat type (See Fig.2-2)

Nominal Pressure

ANSI Class 125,150

JB/T79.1 HG/T20592 PN0.25，0.6

Body connections

Flanged Type

Main part material

See Table 2

Bearing type for   Stem

Outer bearing type：-5~+600℃

Packing

Teflon-Asbestos：-5~+230℃

Teflon-Carbon :  -5～＋230℃

Flexible graphite:  -5~+600℃。

Painting color

Epoxy resin group. In   the case of stainless steel body, no painting

RB series (pinion-and-rack)

Singel-acting

Double-acting

Purpose

Adjustment

Air supply pressure

0.4-0.7MPa

Connection

Rp1/4, Rp1/2

Rotation Angle

60 or 90 degree

Direct action

Air to valve shut

Valve open or close by air or electric   signal.

Reverse action

Air to valve open

Lag

≤1.5% of full stroke with positioner

Linearity

≤±2% of full stroke with   positioner

Allowable Ambient   Temp.

-40~+80   ℃

Painting

RB series ，silver

Option

E/P, P/P-Positioner, Filter-pressure-reducing   valve, Solenoid valve, Limit switch, Position transmitter, Lock valve, Speed   controller, Rotation stopper, Manual mechanism, etc.