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Product Category

Sanitary Clamped Check Valve

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Description

Application 
 

The check valve opens when the pressure in the lower part of the stem exceeds the pressure on the stem and the spring force.

When the pressure on the stem is balanced, the valve will close.

A higher reverse pressure acts on the stem to close it.

Zh4 sanitary check valve has two types of structure

Zh4-1 check valve adopts clamp connection, which is economical and applicable, and is widely used in food industry.

Zh4-2 check consists of thickened valve body and two-piece method, which is characterized by easy installation and disassembly.
 

working principle
 

Zh4 series check valves are used in stainless steel piping systems to prevent fluid backflow.

 

Correct installation position of safety valve (Fig.)

Pressure drop / capacity comparison chart

Technical parameter


 

Metal material

Product wetted

304L/316L (DIN-1.4307/1.4404) forged
304L/316L(1.4307/1.4404) Forged

Non-product wetted

304(1.4301)

We can provide EN 10204 3.1B certificate.

Seal material

Standard

EPDM

Options

FPM 、NBR/PTFE、Silicone

All seal materials comply with FDA 177.2600.

Temperature

Continuous working temperature

-20~+135℃(EPDM)

Sterilization temperature

150℃(max 20min)

Pressure

Opening pressure

≈0.08bar

Max working pressure

10bar

Surface treatment

Internal surface

Ra≤0.8μm

External surface

Ra≤1.6μm

Connection

Connection standards

Welding end: DIN 11850 series 2

Welding end: Inch pipe diameter standard

Connection methods: welding, thread, clamp, flange

 

Clamp - threaded

 

Size (mm)

3A  
Size A B C D
1.0"
1.5"
22.1
34.8
37.13 ACME 8TPI
50.65 ACME 8TPI
46
46
67
67
2.0"
2.5"
47.5
60.2
64.16 ACME 8TPI
77.67 ACME 8TPI
47
50
68
71
3.0"
4.0"
72.9
97.38
91.19 ACME 8TPI
119.25 ACME 6TPI
51
60
72
72
DIN  
DN25
DN32
26
32
Rd52×1/6"
Rd58×1/6"
60
60
81
81
DN40
DN50
38
50
Rd65×1/6"
Rd78×1/6"
60
61
81
82
DN65
DN80
66
81
Rd95×1/6"
Rd110×1/4"
63
63
84
84
DN100 100 Rd130×1/4" 68 89
SMS  
25
38
22.5
35.5
RD40×1/6"
RD60×1/6"
53
58
74
79
51
63.5
48.5
60.5
RD70×1/6"
RD85×1/6"
58
62
79
83
76
101.6 Min
72.9
97.6
RD98×1/6"
RD125×1/4"
66
72
83
83
101.6 Max 97.6 RD132×1/6" 72 83

Clamp - welded
Size (mm)

Inch  
Size A B C D
1/2"
3/4"
9.4
15.75
12.7
19.05
28.5
28.5
39.5
39.5
1.0"
1.5"
22.1
34.8
25.4
38.1
38
38
59
59
2.0"
2.5"
47.5
60.2
50.8
63.5
38
38
59
59
3.0"
4.0"
72.9
97.38
76.2
101.6
42
44
59
55
DIN  
DN20
DN25
20
26
23
29
28.5
38
39.5
59
DN32
DN40
32
38
35
41
38
38
59
59
DN50
DN65
50
66
53
70
38
38
59
59
DN80
DN100
81
100
85
104
42
44
59
55

Clamp - clamp type

Size (mm)

3A / SMS / ISO  
Size A B C D
1/2"
3/4"
9.4
15.75
25.2
25.2
28.5
28.5
39.5
39.5
1.0"
1.5"
22.1
34.8
50.5
50.5
38
38
59
59
2.0"
2.5"
47.5
60.2
64
77.5
38
38
59
59
3.0"
4.0"
72.9
97.38
91
119
42
44
59
55
DIN  
DN20
DN25
20
26
34
50.5
28.5
38
39.5
59
DN32
DN40
32
38
50.5
50.5
38
38
59
59
DN50
DN65
50
66
64
91
38
38
59
59
DN80
DN100
81
100
106
119
42
44
59
55

 

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暂未实现,敬请期待