法兰连接固定锻钢硬密封球阀系列

产品结构特点 Construction features

1、抗硫化应力裂化：阀门接触介质的材料都是按美国腐蚀工程师协会NACE01-75 的标准进行选择，且按标准进行表面镀镍，能满足硫化环境工况的要求。

2、用聚合物或金属作密封材料，在高温、高压工况具有优良的密封性能。

3、设置填料箱，防止阀门内腔压力异常升高而使阀杆飞出，增置倒密封结构，能 确保填料可靠密封。

4、广泛适用于化工、炼油、油气、天然气、钢铁等介质管路。

1. Resistance to sulfide stress cracking: valve contact medium materials are according to the American association of corrosion engineers NACE01-75 standards for choice, and according to the standard to nickel plating on the surface, can satisfy the requirement of curing environment conditions.

2. Sealing material with polymer or metal, excellent sealing performance in high temperature and high pressure condition.

3. Set the stuffing box to prevent the pressure of the inner cavity of the valve to rise and make the stem fly out, adding the backsealing structure to ensure the packing is reliable.

4. Widely applicable to chemical, oil, gas, natural gas, steel and other media pipelines.

产品特征 Spericfications

适用介质：水、气、油品、天然气和酸碱腐蚀性介质

适用温度：-196~350℃

驱动方式：手动、气动、电动、液动等

公称压力：1.0~4.0MPa

公称通径：DN50~1200mm

Applicable media: water, gas, oil, gas and acid and alkali corrosive medium

Applicable temperature: -196~350℃

Driver: manual, pneumatic, electric, hydraulic, etc

Nominal pressure: 1.0~4.0MPa

Nominal size: DN50~1200mm

主要零件和材质 Main parts and materials

技术规范 Technical specification

试验压力 Test prssure

锻钢设计 Forged steel design

阀体和球芯全部采用锻钢材料，保证阀门在各种工作压力等级压力下都具有很好的强度和金属致密性。也可按用户要求采用铸件。
The body and core of the body are made of wrought steel material to ensure that the valve has good strength and metal compaction under the pressure of all kinds of work pressure. Castings can also be used as per user requirements.

双重阻塞和排泄 Double obstruction and excretion

当阀门处于关闭位置时，进出口侧的阀座将阀体中腔和管线压力阻断，阀体中腔的滞留物可以通过泄放阀排泄。排泄装置具有以下机能：
 A.  通过排泄装置可以检查阀座是否发生泄漏，以防止不可见的内漏。
 B. 管线有工作压力时，阀门处于全开或全关状态，可更换阀杆处的填料。
 C. 阀门全关时，打开泄放阀，可以排泄体腔的积压和沉积物。
 D. 阀杆密封，采用PTFE自紧式填料和O型圈密封，可在任何时候更换填料。防吹出阀杆设计。阀杆由于只受扭转剪应力而不受弯曲应力，阀门启团更省力，使用更安全。
 E. 紧急辅助密封阀座，紧急密封系统可以在软密封受损，或出现紧急情况不能密封时通过向紧急密封系统注射相应的密封剂即可进行紧急密封。
 When the valve is in a closed position, the seat of the inlet and outlet side is blocked by the body cavity and line pressure, and the retention of the body cavity can be discharged through the discharge valve. The excretory device has the following functions:
 A. The discharge device can be used to check for leakage of the seat to prevent invisible leakage.
 B. When the line is under pressure, the valve is in full or closed condition, and the packing of the stem can be replaced.
 C. When the valve is fully closed, open the drain valve, which can discharge the backlogs and sediments of the body cavity.
 D. stem seal, PTFE self-tightening packing and o-ring seal, can replace the packing at any time. Blow out stem design. The valve stem is not subjected to bending stress because it is only torsional shear stress, and the valve is more efficient and safer to use.
 E. emergency auxiliary sealing seat, sealing system of emergency can be in soft seal is damaged, or there's an emergency can't seal by injection system corresponding to the emergency seal sealant emergency seal can be achieved.