Z44H Quick drain valveDetailed product description：

The Z44H quick drain valve evolved from a gate valve, using gears to rotate 90 ℃ to drive the valve stem to lift and achieve the purpose of opening and closing. The Z44H drain valve not only has a simple structure and good sealing performance, but also has a small volume, light weight, low material consumption, small installation size, especially with small driving torque, easy operation, and quick opening and closing.

Dimensions and connection dimensions of quick discharge valve:

DN（mm）

PN（MPa）

D

D1

D2

L

B

F

H

L1

H

D

F1

z-Φ

forty

one point six

one hundred and forty-five

one hundred and ten

eighty-five

two hundred and thirty

eighteen

three

one hundred and fifty

two hundred and twenty-five

two hundred and sixty

4-18

two point five

one hundred and forty-five

one hundred and ten

eighty-five

two hundred and thirty

eighteen

three

one hundred and fifty

two hundred and twenty-five

two hundred and sixty

4-18

four

one hundred and forty-five

one hundred and ten

eighty-five

two hundred and thirty

eighteen

three

one hundred and fifty

two hundred and twenty-five

two hundred and sixty

seventy-six

four

4-18

fifty

one point six

one hundred and sixty

one hundred and twenty-five

one hundred

two hundred and fifty

twenty

three

one hundred and fifty-seven

two hundred and twenty-five

two hundred and sixty-seven

4-18

two point five

one hundred and sixty

one hundred and twenty-five

one hundred

two hundred and fifty

twenty

three

one hundred and fifty-seven

two hundred and twenty-five

two hundred and sixty-seven

4-18

four

one hundred and sixty

one hundred and twenty-five

one hundred

two hundred and fifty

twenty

three

one hundred and fifty-seven

two hundred and twenty-five

two hundred and sixty-seven

eighty-eight

four

4-18

Adopting the main standards
1. The design and manufacturing of Z44H drain valve shall comply with the provisions of GB/T12237-1989.
2. Inspection and testing shall be conducted in accordance with the provisions of GB/T13927-1992.
3. The flange size shall comply with the provisions of JB79-59.
4. The pressure temperature rating shall comply with the provisions of GB9131.
5. Compression springs shall comply with the provisions of GB/T1239.2.
6. The structural length shall comply with the provisions of JB/T6900-93.
7. The logo shall comply with the provisions of GB/T12220-1989.

Performance Specification for Z44H Quick Drain Valve:

Model
Stress	one point six	two point five	four
Applicable temperature	≤350℃
Applicable Medium	Water, steam

structural principle
The Z44H drain valve relies directly on the force generated by the medium pressure to assist the mechanical load seal acting on the valve disc. The mechanical load acting on the valve disc mainly comes from the compression spring, which is almost a fixed mechanical load. Although for compressed springs, the loaded drain valve can achieve good sealing by adjusting the spring force, the sealing pressure difference must be strong enough to ensure sufficient sealing force to achieve sealing during normal valve operation. The sealing pressure difference should also be less than the opening and closing pressure difference to ensure flexible opening.

Main component materials of Z44H fast drain valve:

Part Name	Material
Valve body and valve cover	Cast steel WCB
Valve stem gear shaft	Chromium stainless steel 2Cr13
Valve disc and seat	Chromium stainless steel 2Cr13
Packing material	Graphite asbestos rope
Handle	Cast steel WCB
Spring	Phosphor bronze wire