Product Overview

The ZX(RRHX) Bright Stem Soft Seal Gate Valve is a rising stem gate valve featuring a resilient seated design for bubble-tight shutoff. Its visible stem position indicator provides clear visual confirmation of valve status, making it ideal for applications requiring precise flow control and position verification.

Key Features

• Rising Stem Design– Visual indication of valve position
• Soft Seal Technology– Zero leakage bubble-tight shutoff
• Corrosion Resistant– Stainless steel stem and epoxy coated body
• Low Operating Torque– Easy operation with minimal force
• Full Port Design– Minimal pressure drop when fully open
• Bi-directional Sealing– Effective sealing in both flow directions
• Maintenance Friendly– Replaceable seat and stem packing

Technical Specifications

Working Principle

The ZX(RRHX) valve operates through a rising stem mechanism. When the handwheel is rotated clockwise, the stem rises vertically while lifting the gate from the seat, allowing fluid flow. Counter-clockwise rotation lowers the gate back into the resilient seat, creating a bubble-tight seal. The rising stem provides clear visual confirmation of valve position – fully extended indicates open, retracted indicates closed.

Structural Features

• Rising Stem– Provides visual position indication
• Resilient Seated Gate– Ensures zero leakage sealing
• Stem Protection– Weatherproof stem cover available
• Backseat Design– Allows packing replacement under pressure
• Blowout-Proof Stem– Safety design prevents stem ejection
• Lubrication Fitting – For easy stem maintenance

Applications

• Water treatment and distribution systems
• Wastewater and sewage systems
• Fire protection systems
• HVAC and building services
• Industrial process piping
• Irrigation and agricultural systems

Installation & Maintenance

Installation Requirements

• Install in accessible locations for operation and maintenance
• Ensure adequate clearance for stem extension when fully open
• Support piping properly to avoid stress on valve body
• For outdoor installation, consider weatherproof stem cover

Maintenance

• Exercise valve monthly if not in regular use
• Inspect stem packing quarterly for leaks
• Lubricate stem threads annually
• Check flange bolts torque every 2 years
• Replace stem packing when leakage exceeds acceptable limits