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GMJ11F Instrumentation Needle-Type Sampling Valve

GMJ11F Instrumentation Needle-Type Sampling Valve

  • Model:GMJ11F-250/GMJ11F-250P/GMJ11F-250R/GMJ11F-320/GMJ11F-320P/GMJ11F-320R/GMJ11H-250/GMJ11H-250P/GMJ11H-320P
  • Specification:DN5/DN6
  • Temperature:-29℃~+538℃
  • Medium:water, steam, oil, gas, corrosive/non corrosive fluids
  • Pressure:PN16-PN40
  • Connection method:Internal thread
  • Driving method:Manual
  • Material:stainless steel
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GMJ11F Instrumentation Needle-Type Sampling ValveOverview

GMJ11F Instrumentation Needle-Type Sampling Valvespecifically designed for collecting medium samples from process pipelines or equipment. It adopts a diaphragm type sealing structure and drives the valve stem to rise and fall by rotating the handwheel, which in turn drives the diaphragm or valve disc to open and close, achieving the sampling operation of the medium. The sealing surface is usually processed directly from the valve body material or uses a soft seal ("F" type) to ensure the sealing reliability during the sampling process. This valve has a compact structure and is easy to operate. It is a key sampling equipment used for process control, quality testing, and laboratory analysis in industries such as petroleum, chemical, and pharmaceutical. Widely used in pipelines or equipment of petrochemical plants, pharmaceutical production lines, food and beverage processes, environmental monitoring systems, laboratories, and scientific research institutions. Mainly used to collect liquid, gas, or vapor samples from process systems for component analysis, quality testing, process control, and environmental monitoring.

Product Drawing of GMJ11F Instrumentation Needle-Type Sampling Valve

GMJ11F Instrumentation Needle-Type Sampling ValveCharacteristic

1. Specially designed for sampling

Designed for the special requirements of sampling operations, it can achieve fixed-point, quantitative, and safe collection of process media. The sampling port design is reasonable and easy to connect to the sampling container.

2. Diaphragm type sealing structure

Adopting diaphragm sealing, the valve stem is isolated from the medium, with no risk of leakage, making it particularly suitable for sampling toxic, harmful, flammable, explosive, and corrosive media.

3. Hard or soft seals are optional

The sealing surface can be selected from metal hard seals or soft seals such as polytetrafluoroethylene (PTFE) ("F" type) to meet different medium characteristics and sealing grade requirements.

4. Accurate sampling and easy operation

The opening degree of the valve disc can be precisely controlled through the handwheel, achieving medium collection with small flow rate and controllable flow rate. The operation is easy and the sampling repeatability is good.

5. Compact structure and easy installation

Compact in size, usually using threaded connections (such as NPT, G threads), can be directly installed on pipelines or equipment sampling ports, occupying little space.

6. Flexible material selection

The valve body material can be selected from stainless steel (304/316), carbon steel, etc., to meet the corrosion requirements of different media. The internal parts can be hardened to improve wear resistance.

7. Safe and reliable, prevent leakage

The sealing structure design is rigorous, and it is tightly closed after sampling to prevent medium leakage and ensure the safety of operators and environmental cleanliness.    

GMJ11F Instrumentation Needle-Type Sampling Valvestructure principle

Structure Diagram of GMJ11F Instrumentation Needle-Type Sampling Valve

Component name and material

序号 No零件名称 Part name材质 Material
1取样管 Sampling tube20# A105 SS304 SS304L SS316 SS316L
2阀体 Body20# A105 SS304 SS304L SS316 SS316L
3阀盖垫片 Bonnet gasket紫铜 PTFE RPTFE Copper PTFE RPTFE
4阀盖 Bonnet20# A105 SS304 SS304L SS316 SS316L
5填料垫 Gland followerPTFE 柔性石墨 金属盘根 PTFE Flexible graphite Metal packing
6填料 PackingPTFE 柔性石墨 PTFE Flexible graphite
7填料压盖 Gland20# A105 SS304 SS304L SS316 SS316L
8锁紧螺母 Lock nut20# A105 SS304 SS304L SS316 SS316L
9阀杆 Stem20# A105 SS304 SS304L SS316 SS316L
10手轮 Handwheel20# A105 SS304 SS304L SS316 SS316L
11带帽螺母 Cap nut20# A105 SS304 SS304L SS316 SS316L


GMJ11F Instrumentation Needle-Type Sampling Valvetechnology parameter

Performance Specification Sheet

试验项目 Test item压力值 Pressure value
公称压力 Nominal pressure16
壳体试验 Casing test24
密封试验 Seal test17.6
气压试验 Pneumatic test9.6
适用温度 Applicable temperature<180℃
适用介质 Applicable medium水、蒸气、油品等 Water,steam,oil products,etc.


GMJ11F Instrumentation Needle-Type Sampling Valvestandard size

GMJ11F Instrumentation Needle-Type Sampling Valve Outline Drawing

Outline dimension table

型号 model NO.公称通径nominal diameter DNM1M2φLL1HD0
GMJ11F/H-1DN6G1/2M20X1.5φ1070153110φ60