Nominal  pressure/PN/MPa

 Seal test/MPa                                                                                              

Shell strength

Back seal test

Seat test

1.0

1.5

1.1

1.1

1.6

2.4

1.8

1.8

2.5

3.8

2.8

2.8

4.0

6.O

4.4

4.4

6.4

8.6

7.O

7.0

1O.O

15.O

11.O

11.O

Product type

Applicable medium

Applicable temperature/°C

NKZ41H
NKZ44H
NKZ944H-C
NKZ941H

Water,Steam,Air

≤425

NKZ41H(Y)
NKZ44H(Y)-I
NKZ944H(Y)-I
NKZ941H(Y)

Water,Steam,Air

≤550