Coupling member for a pipe coupling

A coupling member for a pipe coupling comprising:

• a tubular body having a through hole;
• and
• a valve disposed in said through hole, wherein
• said valve comprises:
• a valve holder movable in a direction of an axis of said through hole between a closing position and an opening position;
• and
• a rotatable valve member supported by said valve holder to be rotatable about a pivotal axis extending normal to said axis of said through hole between an opening rotational position to allow fluid to flow through said coupling member and a closing rotational position to prevent fluid from flowing through said coupling member, and
• said coupling member further comprises:
• a cam mechanism for operating said movable valve member, said cam mechanism comprising:
• a cam member disposed at a predetermined position in said tubular body, and a cam profile portion provided on said rotatable valve member to be slidably engagable with said cam member such that, when said valve holder is moved between said opening position and said closing position, said rotatable valve member is rotated about said pivotal axis between said opening rotational position and said closing rotational position, respectively;
• a stopper engaging said rotatable valve member when the rotatable valve member has been moved from said closing rotational position to said opening rotational position to stop said rotational valve member at said opening rotational position;
• and
• a spring member for urging said rotatable valve member against said stopper.