Control systems Safety valves
4
Local regulations may restrict the use of this product to below the conditions quoted. In the interests of development and improvement of the product, we reserve the right to change the specification without notice. © Copyright 2019
TI-S13-25 CTLS Issue 13
SV73 Cast Iron Safety Valve
4.7 97
Description The SV73 cast iron series valves are built in conformance to Section I and VIII of the ASME Boiler and Pressure Vessel Code. They are primarily intended for use on power boilers and unfired pressure vessels where ASME Section I and VIII stamped valves are required. Applications Protection of steam systems downstream of pressure regulating stations, on inlet to such equipment as air coils, heat exchangers and process vessels. Also for use on flash recovery vessels on condensate return systems to protect vessels. Air systems to protect accumulation vessels and air equipment from overpressurisation. Steam boilers and generators. Available types The SV73 is available with cast iron body and stainless steel trim in orifice sizes from 'J' to 'R'. It has an open bonnet and easing lever and is available with screwed or flanged connections. Certification
A manufacturers' Typical Test Report is provided as standard for each valve which will include valve set and hydraulic test pressure. Also available on request is material certification in accordance with EN 10204 3.1. Standards and approvals Approved by National Board of Boiler and Pressure Vessel Inspectors to ASME Boiler and Pressure Vessel Code Sections I and VIII. Seat tightness is in accordance with ANSI/API STD 527-1992. If National Board 'V' or 'UV' stamp is required, then this must be specified at the time of ordering. Important note: SV73 safety valves are not marked and therefore not to be used within the EEA.
Sizes and end connections 1½" x 2½" to 3" x 4"
Inlet/outlet screwed female NPT.
1½" x 2½" to 3" x 4"
Inlet flanged ANSI class 250 RF, Outlet screwed female NPT.
3" x 4" to 6" x 8"
Inlet flanged ANSI class 250 RF, Outlet flanged ANSI class 125 FF.
Page 1 of 8
Powered by FlippingBook