STU, STB needle valves, both are hydraulic flow control valves, their features are:
1.STU valve is a throttle valve build with a check valves, works one way flow control and other way free flow;
2.STB valve is a throttle valve to both side;
3.heat treated needle, long life, wear resistance;
4.accurate flow control;
5.compact, safe;
6.interchangeable with international brands;
NOTICE: STU
valve is only one way flow other, the other way is a free flow, please be aware the flow direction when installing.
Warranty: 13 months after date of on board.
Hydraulic symbol:
STU flow control valve:
Dimensions:
| Part No | C | L | H | D | E | F | G | M | N | PN | L/min |
| STU0400 | G1/4 | NPT1/4 | 73 | 72 | 32 | 20 | M20X1 | 5 | 27 | 7 | 40 | 12 |
| STU0600 | G3/8 | NPT3/8 | 82 | 80 | 32 | 25 | M25X1.5 | 9 | 31 | 7 | 40 | 30 |
| STU0800 | G1/2 | NPT1/2 | 98 | 92 | 45 | 30 | M30X1.5 | 9 | 36.5 | 9 | 40 | 50 |
| STU01200 | G3/4 | NPT3/4 | 112 | 100 | 45 | 40 | M35X1.5 | 10 | 42 | 11 | 40 | 85 |
| STU01600 | G1 | NPT1 | 142 | 122 | 45 | 45 | M40X1.5 | 12 | 51 | 15 | 32 | 150 |
Dimensions:
| Part No | C | L | H | D | E | F | G | N | PN | L/min |
| STB0400 | G1/4 | NPT1/4 | 54 | 72 | 32 | 20 | M20X1 | 5 | 7 | 40 | 12 |
| STB0600 | G3/8 | NPT3/8 | 62 | 80 | 32 | 25 | M25X1.5 | 9 | 7 | 40 | 30 |
| STB0800 | G1/2 | NPT1/2 | 73 | 92 | 45 | 30 | M30X1.5 | 9 | 9 | 40 | 50 |
| STB1200 | G3/4 | NPT3/4 | 84 | 100 | 45 | 40 | M35X1.5 | 10 | 11 | 40 | 85 |
| STB1600 | G1 | NPT1/2 | 102 | 122 | 45 | 45 | M40X1.5 | 12 | 15 | 32 | 150 |
