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| TECHNICAL INFO | ||
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| TECHNICAL INFO | ||
R/W VALVE
Material Specifications
| CAST IRON Specification ASTM A126 Class B | |
| Physical Properties | |
Minimum tensile strength Minimum transverse strength Minimum deflection ( 12" Centers ) |
31,000 psi 3,300 lbs. .12 in |
| Chemical Analysis (percent) | |
Phosphorus (maximim) Sulfur (maximum) |
.75 .15 |
| Ductile Iron ASTM A536 | |
Minimum tensile strength Minimum yield strength Elogation |
65,000 psi 45,000 psi 10-12% |
| Urethane Rubber | |
Hardness 100% Modulus (PSI) Tensile (PSI) Elongation (%) |
78 ± 2 820 5,400 460 |
| Seat Rubber (SBR) | |
Hardness 100% Modulus (PSI) Tensile (PSI) Elongation (%) Compression Set, ASTM D395 Method B |
78 ± 2 820 5,400 460 18% max. |
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