... : 270MMPORT ANGLE: 0°CLAMP ANGLE: 90°INTRODUCTION: Spring duration>100,000times diaphragm duration:>1,000,000times(normal ... wheel.We offer a comprehensive range including Brake Chambers, Spring Brakes (in diaphragm/piston or double diaphragm configuration), ... (air/vacuum) foot brake valve, relay valve, air dryer, clutch servo, trailer valve, unloader valve, protection valve, etc.., which applied to ...