Valve selection
The designation of the appropriate valve in a maximum 5 steps:
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| Please provide the following Information: |
| Nominal Diameter (orifice) e.g DN 8 | DN |
| Nominal Pressure e.g PN 160 | PN |
| Material e.g Wst. Nr. 1.4571 | |
| Working temperature e.g 120°C | TB °C |
| Working pressure e.g 110 bar | PB |
Ventil - Anschlüsse:
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inlet e.g. weld end for 1/2“ pipe, wall thickness 3,2 = pipe
21,3 x 3,2
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| outlet e.g. cutting ring connection für O.D.
12mm Tube
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| Send this Information to the Bollin Firm (FAX-Inquiry / Order sheet page 3; FAX ++49-6171-88 33 66-9) with a request to process your order for the above specified valves, or you go on with point 3. | |
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| By consulting the specification pages A10 / A12 in the chapter on shut-off valves, check if the connections and the requirements regarding the working pressure and temperature of the type are covered. If this not proves, please refer to the Bollin Firm (FAX ++49-6171-88 33 66-9).td> |
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Check if the connections (inlet and outlet) wich you require are possible with one of the valve types
A3 - A11, according to the following table.
• If yes: Then you can choose this type.
• If not: Check the next largest valve
• or refer directly to the Bollin Firm (Fax ++49-6171-88 33 66-9).
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| Definition of the appropriate valve types through the following diagram ondesign, connection criteria, working temperature |
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connection-criteria for valve ... (A...) |
A3 |
A7 |
A11 |
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cutting ring (twin ferrule unions) |
SV / KL ≤ | 14S oder 15L |
16S oder 18L |
25S oder 28L | |
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G - male thread |
without sealing collar |
GA ≤ |
G1/2“ |
G3/4“ |
G1“ |
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with sealing collar |
GB ≤ |
G3/8“ |
G5/8“ |
G3/4“ |
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G - female thread |
without recess |
GI ≤ |
G3/8“ |
G1/2“ |
G1“ |
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with recess |
GE ≤ |
G1/4“ |
G1/2“ |
G3/4“ |
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M - male thread |
without sealing collar |
MA ≤ |
M20 x 1,5 |
M27 x 1,5 |
M33 x 2,0 |
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with sealing collar |
MB ≤ |
M16 x 1,5 |
M22 x 1,5 |
M33 x 2,0 |
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M - female thread |
without recess |
MI ≤ |
M16 x 1,5 |
M22 x 1,5 |
M33 x 2,0 |
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with recess |
ME ≤ |
M14 x 1,5 |
M20 x 1,5 |
M27 x 2,0 | |
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NPT - male thread |
NA ≤ |
1/2-14NPT |
3/4-14NPT |
1-11.5NPT |
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NPT - female thread |
NI ≤ |
1/4-18NPT |
1/2-14NPT |
1-11.5NPT |
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but weld end |
SZ ≤ |
1/2“ (21,3) |
3/4“ (26,9) |
1“ (33,3) |
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socket weld end |
SM ≤ |
3/8“ (17,2) |
1/2“ (21,3) |
3/4“ (26,9) |
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