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Application
Body Material
Dimensions
RK 16 A
RK 49, DN 15 – 65 mm
? D ? D
? D
L
L
L
RK 49, DN 80 – 800 mm
Non-Return Valves RK – PN 40 to PN 160
Short overall length according to DIN EN 558-2, table 11, series 52 (=^ DIN 3202, part 3, series K5)
Type PN
RK 16 A 40
For liquids, gases, vapours. Application as check valve,
RK 49 160
breather, foot valve, pressure-relief valve or pressuremaintaining
valve.
RK 16 A for aggressive fluids and low temperatures
RK 49 for high pressures and temperatures
DN [mm] 15 20 25 32 40 50 65 80 100 125 150 200
[in] 1/2 3/4 1 11/4 11/2 2 21/2 3 4 5 6 8
L [mm] 25 31.5 35.5 40 45 56 63 71 80 110 125 160
RK 16 A D [mm] 52 63 72 81 93 108 128 143
1631)
– – –
1692)
RK 49 D [mm] 54 63 74 84 95 110 130 147 173 209 245 301
1) PN 10/16
2) PN 25/40
Type Nominal sizes (DN) DIN reference ASTM equivalent
RK 16 A 15 – 100 mm 1.4571 A 351 CF 8
RK 49
15 – 65 mm 1.4581 A 351 CF 8
80 – 200 mm 1.7357 A 217 WC 6
Physical and chemical properties comply with DIN grade.
ASTM nearest equivalent is stated for guidance only.
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