Danfoss VSB 12-EN Technical Information
Relief Valves Technical Information
Differential Area
VSB 12-EN
OPERATION |
This is a direct-acting, differential area, poppet-type relief valve that relieves from 2 to 1 |
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with an integral free-flow check from 1 to 2. |
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SPECIFICATIONS |
Theoretical performance |
Schematic |
psi |
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bar |
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26 mm²/sec (cSt) [124 SUS] @ 50°C [122° F] |
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400 |
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5000 |
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4000 |
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300 |
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3000 |
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200 |
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2000 |
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1000 |
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100 |
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0 |
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0 |
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Minimum |
setting value |
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l/min |
35 |
70 |
105 |
140 |
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0 |
10 |
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20 |
30 |
35 |
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Flow |
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US gal/min |
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Specifications
Rated pressure |
350 bar [5075 psi] |
Rated flow |
140 l/min [37 US gal/min] |
Weight |
0.60 kg [1.32 lb] |
Cavity |
NCS12/2 |
DIMENSIONS
Cross-sectional view
38 mm
64-70 N•m |
M 33 x 2 |
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[47-52 lbf•ft] |
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1
2
90.7 |
41.3 |
[3.57] |
[1.63] |
ORDERING INFORMATION
VSB 12-EN - 1 - 00 - V - XXX
Setting range
1 = 25 - 170 bar [363 - 2466 psi] 2 = 70 - 270 bar [1015 - 3916 psi] 3 = 105 - 350 bar [15235076 psi]
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Seals |
Seal Kit |
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V = Viton |
230000470 |
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Omit = Buna-N |
230000120 |
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Housing and ports |
Housing P/N |
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00 |
= No Housing |
No Housing |
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DG1/2 |
= AL, 1/2 BSP |
NCS12/2-DG-1/2 |
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DG3/4 |
= AL, 3/4 BSP |
NCS12/2-DG-3/4 |
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DG8S |
= AL, #8 SAE |
NCS12/2-DG-8S |
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DG12S = AL, #12 SAE |
NCS12/2-DG-12S |
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Other housings available
BC332375370104en-000101 • February 2020 |
RV - 25 |
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