■ Product Introduction
A28H spring fully open safety valve is suitable for equipment or pipelines with working temperature ≤ 200 ℃ for media such as air, steam, water, nitrogen hydrogen mixture, etc. A28Y-P/10R8 is suitable for equipment or pipelines with working temperature ≤ 200 ℃ and corrosive media as an overpressure protection device.
■ Product Usage
The A28 type with wrench spring fully open threaded safety valve is a final safety protection device used for overpressure protection in pipelines and containers of non-toxic, harmless, non flammable, and non explosive gas or liquid media. This type of safety valve adopts a spring direct load type, threaded connection, valve cover closed structure, and is equipped with a lifting wrench.
■ Product features
1. Fully open structure, large displacement
2. Threaded connection, easy to install
3. Small size, economical and practical
4. Equipped with a lifting wrench, it is convenient to check the set pressure regularly

■ Implement standards
Design specifications: GB/T 12243
Structural length: GB/T 12221
Flange connection: JB/T 79
Testing and Inspection: GB/T 12242
Product identification: GB/T 12220 Supply specification: JB/T 7928

■ Product model

A28H-10(16) A28H-16C(25,40) A28Y(H,W）-16P(25P,40P)
A 28Y(H,W)-16R(25R,40R) A28Y(H,W)-16R3(25R3,40R3)

■ Structural diagram

■ Set pressure level

■ Performance parameters

■ Main external connection dimensions