ANGLE TYPE CONTROL VALVES Z91-4411 SERIES

TECHNICAL DATA

Valve

Body materials

Type:
Globe, single seat, not invertible.
Materials:
Carbon steel, stainless steel, cast iron and other materials on request.
Sizes:
From 1'' to 16''.
onnections:
UNI, ANSI, DIN flanged for all NPS.
BW ends ANSI B 16.25 for all NPS.
Ratings:
PN 10/16/25/40/64/100, ANSI 150/300/600 for carbon steel flanged and butt-welding constructions.
Jacket:
Carbon steel can be equipped with external jacket, rating PN 16, ANSI150; higher ratingson request.

Bonnet

Connstruction:
Std, finned for high temperatures, extended for low temperatures and metallic bellows sealed for extratight shut-off.
Materials:
The same as the body, forged or rolled construction.
Packing:
Graphited teflon split-rings, solid pure teflon V-rings, pure graphite.

Plug

Port:
Full or reduced in accordance to Cv's table.
Types:
Faced piston with linear or equal % characteristic for port 1'' and lower.
Parabolic with linear or equal % characteristic for all port sizes.
Quick-opening for all port size over 1''.
Guiding:
Top.
Materials:
AISI 316 stainless steel. Full or partial stellite coating on request.
Inserts:
To get the perfect seal in closed position plugs with teflon soft insert are available.
Working limits of teflon inserts are:
max temperature = 200°C
max Δp = 20 bar in closed position.

Seat

Mouting: Screwed in the body.
Materials: The same as the plug.

Steam

Construction: Ground, high polished AISI 316 stainless steel. Screwed into the plug and locked by an elastic stainless steel pin.

Guide

Construction:
Long, heavy and precision fitted into the bonnet.
Materials:
AISI 420 hardened for carbon, carbon-molybdenum bodies.
S21800 for stainless steel bodies.

FILES

z91_4411_e - PDF ( 386.04 KB )