Off-the-shelf availability - Comprehensive range of sizes and connections Mars Unique SealMax® Stem Design - Maintenance Free
- Triple Sealing System
- Live Loaded Stem Packing
- Extremely High Cycle
- Provide optimum stem seals
- 1 - PYRAMIDAL STEM WITH STEM SEAL
First stage of defense against leakage. The 45 degree slope of the stem accompany the stem seal effectively blocks all leak path during rotation. - 2 - O-RING STEM PACKING
Second stage of defense against leakage enhances stem seal and maintains stem alignment, provides extra longer service life. - 3 - V-RING STEM PACKING
Third stage defense against leakage. Multiple layers of V-Ring Chevron Packing expands side way as it is being compressed, blocking all air pockets to prevent leak path. - 4 - LOCK SADDLE
Stabilizes the entire stem nut to keep it from loosening during operation. - 5 - STEM NUT
Compress the entire stem system to enable blocking of leakage - 6 - BELLEVILLE WASHERS
Automatically compress the seals to adjust for wear, pressure, and temperature fluctuations. - 7 - GLAND
made of Stainless Steel, equally distributes the compressive force on the packing and seal. - 8 - ANTI-STATIC DEVICE
Ball-to-Stem anti-static device as standard; the stem-to-body anti static device is optional. - 9 - SUPER SMOOTH STEM FINISH
reduces seal friction and operating torque, prolongs service life.
PATENTED LEAK-WATCHING WINDOWS
The U.S., Germany, and China Patent and Trademark office have awarded Mars Valve patent protection for design of its Leak-Watching Window, which is standard used on Mars Direct Mount Ball Valves, for an early warning of stem leak, prevents accident and business disruption costs.
U.S. Patent: 5,954,088
Germany Patent: 299.02.532.2
China Patent: ZL 98 2 09161.3 Contact us for advice from our engineers on
01822 855600
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