Sight Level Valves Upper & Lower Pair
KINGMAN Sight Level Valves Upper & Lower Pair, SS304/SS316L body with internal PTFE lining, tri-clamp connection, pipeline side-mounted. Handwheel spiral stem drive. The liner isolates corrosive media for sampling of acid, alkali and aggressive fluids. Mirror polished dead-leg-free flow path supports CIP cleaning. Widely applied in fine chemical, pharmaceutical and special medium pipelines
Specifications
| Parameter | Value |
|---|---|
| Product Name | Sanitary Sampling Valve |
| Size Range | DN15–DN50 (approx. 1/2"–2") |
| Body & Disc Material | 316L stainless steel |
| Seal Material | PTFE |
| Working Temperature | 150 °C |
| Max. Working Pressure | 0~10bar |
| Connection Standard | 3A / SMS / DIN / ISO |
| Connection Type | Tri-Clamp / Weld / Threaded / Flange |
| Sampling port & Connection type | Tri-Clamp / Weld / Hose barb |
| Sampling Type | Horizontal type / 45° angle type / 35° angle type |
| Surface | Inner surface: Ra ≤0.375μm (SF4) , Outer surface:Ra ≤0.8μm |
| Operation Type | Manual handle / Pneumatic actuator |
| Certification | ISO 9001, 3A,CE,EAC,health wading license |
Dimensions

Features
- 1. Integral seamless PTFE full lining completely isolates acid, alkali, solvent and highly corrosive media, fundamentally preventing stainless steel body corrosion, oxidation and rusting.
- 2. Dual anti-corrosion system of lining and seal resists strong chemical cleaners and extreme temperatures, adapting to special corrosive medium sampling conditions that ordinary sampling valves cannot handle.
- 3. The ultra-smooth lining surface prevents material adhesion with excellent fluidity, leaving no residual medium after sampling and greatly reducing cross-contamination risks in sanitary pipelines.
- 4. Precise spiral handwheel flow control ensures soft and stable opening, allowing sampling speed adjustment according to medium characteristics to avoid corrosive material splashing and loss.
- 5. Standard weld-free tri-clamp connection enables fast disassembly for deep offline cleaning and convenient maintenance, suitable for corrosive production lines with frequent sampling requirements.
- 6. The outer stainless steel body ensures high pressure resistance and structural strength, while the inner PTFE lining provides chemical stability, achieving far longer service life than ordinary stainless steel sampling valves.
Working Principle

Sight Level Valves Upper & Lower Pair with PTFE Liner adopts manual handwheel rotation to drive spiral stem lifting, controlling the opening and closing between plug and seat for corrosive medium sampling. When closed, the plug tightly seals the seat to block fluid completely. When opened, corrosive pipeline medium flows stably along the smooth PTFE lining for sampling. The medium only contacts PTFE lining and sanitary seals without touching the metal body, avoiding body corrosion and metal ion precipitation contamination. The whole valve can be disassembled for cleaning after sampling to maintain high pipeline sanitation standards.
Why Choose KINGMAN
Long-Term Manufacturing Know-How
More than 30 years of stainless steel manufacturing experience supports our understanding of machining, sealing, surface finishing and fabrication requirements across sanitary valves, hygienic fittings and customized fluid components.
OEM Flexibility
From materials and dimensions to connections and finishes, product specifications can follow your drawings or private-label requirements instead of forcing your equipment or market around fixed catalog configurations.
Trial to Repeat
Begin with samples or trial quantities, confirm sanitary product fit and workmanship, then maintain the approved specification as your purchasing develops into regular replenishment or larger-volume orders.










