TB/T 3460-2016 in English

VALID

Relief valve for railway passenger cars and EMUs

Issued on:2016-09-30
Implemented on:2017-04-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $169.00
$164.00

Standard No:	TB/T 3460-2016
Document status:	VALID
Title in English:	Relief valve for railway passenger cars and EMUs
Title in Chinese:	铁道客车及动车组用溢流阀
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2016-09-30
Implemented on:	2017-04-01
ICS Classification:	45.060.20-Trailing stock
Chinese Classification:	S51-Railway passenger coaches
Professional Classification:	TB-Railway Transport
Related Keywords:	standard technical dimension standard requirements test method working pressure relief valve overflow valve pressure test temperature adaptability -40℃~+55℃ gb/t closing pressure requirements

Introduction

Analysis of the core content of the standard

Technical dimension	Standard requirements	Test method
Working pressure	≤1250kPa	1.5 times the pressure for 3min
Air tightness	Pressure drop≤10kPa/min	1000kPa pressure test
Temperature adaptability	-40℃~+55℃	GB/T 2423 series test

Key technical innovations

For the first time, the standard clearly defines the set pressure deviation range (±20kPa) of the overflow valve, and sets differentiated closing pressure requirements for products with different diameters. Among them, valves with diameters ≤12mm require closing pressure ≥89% of opening pressure.

Implementation and application suggestions

Selection guide

Select temperature grade according to the operating environment:

Frigid lines should preferably use -40℃ type
Conventional lines can use -25℃ type

Maintenance points

It is recommended to retest the type inspection items every 5 years, focusing on the aging of the diaphragm assembly. The inspection cycle should be shortened in salt spray areas.

Analysis of Standard Evolution

Compared with the earlier version, the 2016 version mainly strengthens:

Vibration and shock performance requirements (reference GB/T 21563 Class 2 standard)
Addition of special test clauses for reflux function valves
Clear mandatory provisions for anti-loosening marking

More samples: JC/T 2453-2018 DL/T 368-2010 QC/T 942-2021

Sample only — not a preview of TB/T 3460-2016