- Cost Efficiency
Hard Back Seat: More economical for DN40–DN300, but becomes more costly for DN350–DN800.
Soft Back Seat: Higher cost for DN40–DN300, but more economical for DN350–DN800.
- Performance & Reliability
Hard Back Seat: Provides more stable torque, better wear resistance, and enhanced structural support due to the elastomer being compression-molded onto a rigid phenolic backing ring.
Soft Back Seat: Easier to deform or shift when installed between flanges, and prone to seat bulging around disc contact points.
- Maintenance & Recommended Application
Hard Back Seat: Seat replacement requires machinery; not suitable for frequent seat changes.
Soft Back Seat: Seat can be replaced manually and is preferred where valves need regular maintenance.
Recommendation: Choose Hard Back Seat for DN ≤ 300 as a cost-effective and durable option. Select Soft Back Seat when frequent replacement is needed and no machine is available for hard-back seat installation.
Our Commitment to Your Success
At YIFA VALVE, we believe that our success is built on the success of our customers. By providing clear, accurate information about material compatibility, we aim to help you minimize downtime and maximize the efficiency of your fluid control systems.
“Choosing the right seal is about more than just matching a part number; it’s about understanding the unique challenges of your application,” said a YIFA Technical Specialist. “We are committed to being a partner that provides not only high-quality valves but also the expertise to help you use them effectively.”
For personalized guidance on selecting the best sealing material for your project, please visit our official website or reach out to our dedicated technical support team.
About YIFA VALVE
YIFA VALVE is a premier manufacturer of industrial valves, providing innovative and reliable fluid control solutions to industries worldwide. Driven by a philosophy of quality and integrity, YIFA VALVE continues to set industry standards for performance and customer service.
