External Thread Plunger Sampling Valve – Jacketed Insulated Plunger Sampling Valve

一．Product Introduction

The plunger sampling valve consists of valve body, bracket, handwheel, valve stem, plunger and other components. The compact valve body is generally designed at a 45-degree angle, with the valve body and bonnet cast. The valve body and bonnet are connected by studs and bonnet compression nuts. The valve has an external thread inlet and an internal thread outlet. The inner cavity of the valve inlet is equipped with an upper seal ring, a lower seal ring and an isolation ring, and the upper seal ring also serves as a sealing packing. The plunger and valve stem are connected by a T-shaped groove, with the valve stem hung in the T-shaped groove of the plunger. The valve stem nut is screwed on the bonnet and fixed with a pin. The valve stem is equipped with an opening and closing indicator to clearly show the working state of the plunger valve.

二．Product Features

1. Durable & Corrosion-Resistant: Constructed with 304/316L stainless steel (valve body/plunger rod) plus wear-resistant coating, adapting to diverse media like oil, pulp, and food-grade materials.
2. Broad Operating Range: Suitable for temperatures (-1℃~425℃) and pressures (PN16~PN25), with DN15~DN25 size options to meet different pipeline needs.
3. Reliable Sealing Performance: Plunger structure with upper/lower seal rings ensures tight sealing, preventing leakage and sample contamination.
4. Flexible Operation & Installation: Supports manual/pneumatic operation; available with external/internal thread connections. Customizable external plunger length avoids clogging of high-viscosity materials.
5. Compact & Practical Design: 45° compact valve body (cast structure) for easy installation. Built-in opening/closing indicator for clear working status.
6. Wide Application: Ideal for reactors and material sampling in chemical, petroleum, pharmaceutical, food processing and other industries.

三．Technical data

• Size Range: DN15~DN25
• Pressure Range: PN16~PN25
• Temperature Range: -1℃~425℃
• Operation Mode: Manual, Pneumatic
• Valve Body Material: 304 or 316L stainless steel
• Plunger Rod: 304 or 316L stainless steel (with wear-resistant surface coating)
• Oil products, pulp, granular solid-liquid mixtures, easy-to-crystallize media, food-grade materials, etc.