Bubble-Tight Sealing Rising Stem Gate Valve with Outside Screw & Yoke Design and

Product Specification

Headline/Tagline:
Precision Shut-off with Unmatched Clarity: The Rising Stem Soft Seated Gate Valve

Overview:
Our Rising Stem Soft Seated Gate Valve is engineered to deliver bubble-tight sealing and exceptional operational visibility for a wide range of industrial and commercial fluid control applications. Featuring the classic Outside Screw & Yoke (OS&Y) design, this valve provides a reliable, maintenance-friendly, and cost-effective solution for isolating water, oil, gas, and other non-aggressive media.

Key Features & Technical Advantages:

1. Bubble-Tight Soft Seal:

   • Utilizes precision-machined elastomeric (EPDM, NBR, Viton®) or reinforced PTFE sealing discs seated against a resilient valve body.

   • Ensures bidirectional, zero-leakage shut-off, minimizing product loss and enhancing system safety and efficiency.

2. Outside Screw & Yoke (OS&Y / Rising Stem) Design:

   • Visual Position Indicator: The stem rises and lowers with the gate, providing an immediate, clear visual confirmation of the valve’s open or closed status from a distance. This eliminates guesswork and prevents operational errors.

   • Protected Threads: All stem threads are located outside the valve body and flow path, completely isolated from the line media. This prevents corrosion and contamination of the thread mechanism, ensuring smooth operation and significantly extending service life.

   • Ease of Maintenance & Packing Replacement: The external yoke and gland assembly allow for easy inspection, adjustment, or replacement of stem packing under full line pressure, minimizing downtime and maintenance costs.

3. Robust Construction & Reliable Performance:

   • Body constructed from high-grade cast iron, ductile iron, cast steel, or stainless steel (A216 WCB, A351 CF8, etc.), providing durability for various pressure classes (PN10/16/25, Class 150/300).

   • Non-Rising Handwheel: Provides ergonomic and safe operation in confined spaces, as the handwheel position remains fixed regardless of stem movement.

   • Full-Bore Design: When fully open, the gate retracts completely into the bonnet, creating a smooth, unobstructed flow path with minimal pressure drop.

Why Choose Our Valve?

• Enhanced Safety & Operational Control: The visual stem eliminates the hazard of partially open/closed valves.

• Superior Sealing Reliability: Achieves and maintains excellent sealing performance over extended cycles.

• Reduced Total Cost of Ownership: Easy maintenance, long service life, and protected internals lead to lower lifecycle costs.

• Wide Applicability: A versatile solution for HVAC systems, water treatment, general plant utilities, fire protection lines, and industrial process water.

Typical Applications:

• Cooling Water, Chilled & Hot Water Systems

• Municipal Water Supply & Distribution

• Fire Sprinkler and Protection Lines

• General Service in Oil & Gas (non-corrosive)

• Industrial Process Lines (air, water, oil)

• Building Services & HVAC Installations

Available in a comprehensive range of sizes, pressure ratings, and material combinations to meet your specific system requirements.