charging valve  充气阀, 加载阀, 加液阀

check valve  单向阀, 止回阀, 防逆阀，检验阀

check-valve pump  止回阀配流泵

chimney valve  烟道阀

choker checkvalve  阻气单向阀

cindervalve  卸灰阀

Cineston controller brake valve  钦式控制制动联合阀 (用于地下铁道)  circulating-water valve  循环水阀

circulation valve  环流阀

clack valve  止回阀

clapper valve  瓣阀 （翻译公司） clock valve  单向绞链阀

closed center valve  中间位置封闭的阀(方向阀); 闭中心阀

closed crossover valve  正遮盖的换向阀

closed exhaust valve  密闭排气阀

closed-type fuel valve  密闭形燃油阀

closing valve  隔离阀, 节制阀, 隔断阀, 停汽阀

clutch application valve  离合器作用阀

clutch temperature adjusting valve  离合器温度调节阀

coasting valve  滑行阀, 惯性运动阀

coaxial valve  同轴管[阀]  

cold water stop valve  凉水止阀

column shut-off valve  柱关闭阀

column switching valve  柱转换阀

column valve  柱阀

combination sliding and rotary spool valve  又移动又旋转的圆柱滑阀

combination valve  组合阀

combined inlet-outlet valve  进出组合阀

combined strainer and check valve  混合滤尘止回阀

common slide valve  普通滑阀

compensated flow control valve  带压力补偿的流量控制阀;调速阀

compensated relief valve  平衡式溢流阀

compensating air valve  补充空气阀, 补偿气阀, 平衡气阀

compensating valve  补偿阀

compensation valve  平衡阀, 补偿阀

compression release valve  减压阀

compression valve  (减振器的)压缩行程阀

concentric valve  同心阀

condensate valve  凝结水阀

condenser level control valve  凝汽器水位调节阀

condenser relief valve  凝气器安全阀

condenser valve  凝汽阀

conductor‘s valve  车长阀, 紧急制动阀

cone valve  锥形阀

cone-way valve  单向阀

conical seat valve  锥形座阀

conical valve  锥形阀

constant pressure expansion valve  恒压膨胀活门, 恒压膨胀阀

constant pressure valve  恒压阀

control air type reducing valve  控制空气型减压阀

control air valve  控制空气阀

control valve  控制阀, 调节阀;控制管, 调节管

controllable check valve  可控单向[止回检验]阀

controller pilot valve  控制器管制阀 conversion valve  转换阀;转向阀