Q347f worm driven forged steel fixed ball valve is divided into three parts along the section perpendicular to the valve channel axis at the two valve seats. The whole valve is symmetrical along the central axis of the valve stem. It is mainly used to cut off, distribute and change the flow direction of medium on the pipeline. Its large pivot structure ensures the accurate center position of the ball under high pressure, and ensures the good operation performance of the valve; the standard valve seat adopts the spring structure, which pushes the valve seat to the ball to ensure Good inlet and outlet bidirectional sealing performance; using the self-contained discharge valve, the valve body cavity can be discharged outwards; the pivot adopts anti blowing protection structure to effectively prevent leakage; the bearing with low friction coefficient reduces the torque to small Zui, which is convenient for valve opening and closing; the effective contact between the valve stem and the valve body makes the anti-static grounding device have superior performance. It has the advantages of excellent performance, high reliability, wide application and reasonable price.

It is suitable for chemical, petroleum, natural gas, metallurgy and other industries as well as long-distance natural gas pipelines with hydrogen sulfide medium, impurities and serious corrosion.

Q347FMain performance specification for worm gear drive forged steel ball valve

Test pressure（Mpa）	Nominal pressure（Mpa）							压力级（Class）
	1.6	2.5	4.0	6.4	10.0	16.0	25.0	150	300	400	600	900	1500
strength test	2.4	3.8	6.0	9.6	15.0	24	37.5	3.1	7.8	10.2	15.3	23.1	38.4
Sealing test	1.8	2.8	4.4	7.0	11.0	17.6	27.5	2.2	5.6	7.5	11.2	16.8	28.1
Air tightness test	0.5-0.7
working temperature	PTEE≤150℃ PPL E≤300℃ carbon fibre≤350℃
Applicable media	C：Water, oil and steam P: nitric acid (temperature ≤ 200 ℃) r: acetic acid (temperature ≤ 200 ℃)

 

Q347F Material of main parts of forged steel fixed ball valve driven by worm gear

Part name	Material Science
Material code	Ｃ	Ｌ	Ｐ	Ｒ
sphere	WCB	ZGOOCr17Ni14Mo2（CF3M）	ZG1Cr18Ni9Ti（CF8）	ZG1Cr18Ni12Mo2Ti（CF8M）
sphere	2Cr13	ZGOOCr17Ni14Mo2（CF3M）	ZG1Cr18Ni9Ti（CF8）	ZG1Cr18Ni12Mo2Ti（CF8M）
Stem	2Cr13	316L	1Cr18Ni9Ti（304）	1Cr18Ni12Mo2Ti（316）
Sealing surface of valve seat	PTFE、Carbon fiber + PTFE, p-polyphenylene
Stud nut	35 35CrMoA（B7） 45（2H）	2Cr13（420） 1Cr18Ni9 1Cr17Ni2（431）
filler	V-type PTFE, flexible graphite

1. Be careful in installation and construction, and do not hit the valve.
2. Before installation, the ball valve should be inspected to check the specification and model, and identify whether there is damage, especially for the valve stem. Turn it a few times to see if it is skewed, because Zui is prone to bump the stem during transportation. Also remove the debris in the valve.
3. When lifting the ball valve, the rope should not be tied to the hand wheel or the valve stem to avoid damage to these parts, but should be tied to the valve body.
4. The pipeline connected to the ball valve must be cleaned. Compressed air can be used to blow away iron oxide chips, mud and sand, welding slag and other impurities. These debris, not only easy to scratch the sealing surface of the ball valve, in which large particles of debris (such as welding slag), but also block the small valve, so that its failure.
5. The position of valve handle rotation should be reserved during installation. 6. The ball valve cannot be used as throttling. 7. The ball valve with transmission mechanism shall be installed vertically.