NON RETURN VALVE- PN 400 SCREWED ENDS
| DESCRIPTION | |
| A reliable high pressure non-return/check valve for free flow in one direction only with minimum pressure drop. Soft seating arrangement without any force on the soft BUNA 'N' or VITON seals results in zero leakage at back pressure and long life available with screwed ends, tube/pipe ends in single and double ferrule design and combination of screwed and pipe / tube ends. | |
| Cracking Pressure | 0.3TO 0.5 Kg/cm2 - Standard Special Cracking Pressure Available |
| Test Pressure | 25° C Room Temperature |
| Hydrostatic | Body - 620 Kg/cm2 Seat - 413 Kg/cm2 |
| Pneumatic | Seat - 60 Kg/cm2 |
| Seal | BUNA 'N', VITON |
| Material | A 105, A 479 SS304, A 479 SS316, Monel, Hastelloy |
| Finish | CS zinc plated and dichromated. SS Natural |
MODEL No. NRF
| CONNECTIONS | ||||||||||
SIZE |
S1 |
S3 |
B.S.P. Ends |
N.P.T. Ends |
||||||
L1 |
PART No. |
L1 |
PART No. |
|||||||
1/8" |
22 |
22 |
65 |
2 NRF-R |
64 |
2 NRF-N |
||||
1/4” |
22 |
22 |
75 |
4 NRF-R |
76 |
4 NRF-N |
||||
3/8” |
27 |
27 |
85 |
6 NRF-R |
90 |
6 NRF-N |
||||
1/2” |
32 |
32 |
93 |
8 NRF-R |
98 |
8 NRF-N |
||||
3/4” |
41 |
41 |
108 |
12 NRF-R |
111 |
12 NRF-N |
||||
1” |
50 |
50 |
129 |
16 NRF-R |
135 |
16 NRF-N |
||||
1-1/4” |
65 |
65 |
155 |
20 NRF-R |
162 |
20 NRF-N |
||||
1-1/2” |
65 |
65 |
166 |
24 NRF-R |
166 |
24 NRF-N |
||||
ø2” |
90 |
90 |
185 |
32 NRF-R |
191 |
32 NRF-N |
||||
