Product Use:

This pressure relief valve is used in surface or underground air compressor systems. It is installed on the outlet pipeline of the air receiver, directly facing the airflow direction, to provide safety protection.

Design Basis:

2016 Edition "Coal Mine Safety Regulations"

2020 Edition "Basic Requirements and Scoring Methods for Coal Mine Safety Production Standardization Management System".

Models and Applicable Conditions:

(1) Models include: QHF-50, QHF-65, QHF-80, QHF-100, QHF-125, QHF-150, QHF-200, QHF-250, and custom models.

(2) Working pressure: Standard 0.8MPa, Custom options: 1.0MPa, 1.3MPa, 1.6MPa, etc.

(3) Technical Parameters for Model Selection (Standard)