Bought two new flow control valves intended to use as parts to replace internal diaphragms in order not to cutting pipe to replace the whole valves. the old valves do not have model number on valve body, I went by looking similar valve from listed pictures. It turned out the internal diaphragm size changed in new valves. I can not used them for the old valves. Do you still have the old model used diaphragm for sale? I need 2 of them. I am attaching two pictures to describe the kind diaphragms size difference . I will keep the two I bought for future use. Thanks My phone # 862 206 9575 Barry Niu