Quality That Lasts.

A48H Spring Loaded Full Lift Safety Valve, Design standard ASME / API 526
Contact:Sales Department
Tel:+86-21 5620 6641
Mobile:+86-13122293865
Email:info@shinjovalve.com
Tags:

A48H Spring Loaded Full Lift Safety Valve, Design standard ASME / API 526


BRIFE INTRODUCTION

Safety valve is a valve which automatically, without the assistance of any energy other than that of the fluid concerned, discharges a quantity of the fluid so as to prevent a predetermined safe pressure being exceeded.

A48H/Y spring loaded full lift safety valve is open bonnet type which especially work for steam purpose, combined with boiler, steam pipe or other pressure vessel, it is usually high pressure and high temperature suitable, the valve is designed and manufactured according to ASME SectionⅠand Section Ⅷ.

A48H/Y spring loaded full lift safety valve usually applies with A216-WCB, A217-WC6 or even A217-WC9 as material, based on its working temperature. According to boilers design regulation, the safety valve installed on boiler (steam heater or heater drum) shall be full nozzle type, and open within 10% overpressure and close within 7%.


STRUCTURE AND PARAMETER


A48H Spring Loaded Full Lift Safety Valve 

 

Valve Design: ASME, API 526, GB/T 12243-2005
Material: A216-WCB, A216-WCC, A217-WC6, A217-WC9

Pressure Grade: 150Lb, 300Lb, 600Lb, 900Lb, PN16~PN100
Seal Test Pressure: 0.9PS
Discharge Pressure: ≤1.03PS
Back Seat Pressure: ≥0.9PS
Lift Height: ≥(1/4)do FULL LIFT
Coefficient of Discharge: G-0.75
Connection Flange: ASME B16.5, GB/T 9113.1/2-2000

NO.

Name of part

A48Y-C    Material

A48Y-C6    Material

A48Y-C9  Material

1

Body

A216-WCB

A217-WC6

A217-WC9

2

Nozzle

2Cr13 / SS304

2Cr13 / SS304

2Cr13 / SS304

3

Adjusting ring

2Cr13 / SS304

2Cr13 / SS304

2Cr13 / SS304

4

Disc holder

2Cr13 / SS304

2Cr13 / SS304

2Cr13 / SS304

5

Disc

2Cr13 / SS304

2Cr13 / SS304

2Cr13 / SS304

6

Guide sleeve

2Cr13 / SS304

2Cr13 / SS304

2Cr13 / SS304

7

Bonnet

A216-WCB

A217-WC6

A217-WC9

8

Spring

50CrVA / Inconel

50CrVA / Inconel

50CrVA / Inconel

9

Stem

2Cr13 / SS304

2Cr13 / SS304

2Cr13 / SS304

10

Cap

A216-WCB

A217-WC6

A217-WC9

CODES AND STANDARDS

United States

ASME (American Society of Mechanical Engineers) Boiler & Pressure Vessel Code, Section I
ASME (American Society of Mechanical Engineers) Boiler & Pressure Vessel Code, Section VIII, Division 1
API (American Petroleum Institute) Recommended Practice 520 and API Standard 526, API Standard 2000 (low pressure - Storage tank

European Union

European standard steam boiler safety valveISO 4126 (harmonized with European Union directives) [5]
EN 764-7 (former CEN standard, harmonized with European Union directives, replaced with EN ISO 4126-1)
AD Merkblatt (German)
PED 97/23/EC (Pressure Equipment Directive - European Union)

China

JB/T308-2004 <Valves Code>
GB/T12241-2005 <Safety Valves’ Design, Manufacture and Test>
GB/T12243-2005 <Safety Valves’ Design, Manufacture and Test>

 


About Us

Shinjo Company is a high tech enterprise specialized in producing various industrial valves. Shinjo strive on providing full package of industrial valve solution to client, focus on industrial valve manufacture, development, sales and services.

Contact Us
Tel: +86-21 5620 6641
Fax: +86-21 6915 6667
Mobile: +86-13122293865(WhatsApp)
Skype: maxchi2013
Fllow Us
Copyright © 2019 Shinjo Valve Co., Ltd.  Powerby:Injnet