我找到了这个(关于push-fit fittings 的四个误区)，可能相关；关于传统技术 还是 新工艺。
（https://www.johnguest.com/speedfit/push-fit-myths/）
Myth 1: Soldering pipes is a true skill and using push-fits devalues the trade （焊接是真正的技术，push-fits 是低标准?）
Although simple to install, the technology behind the push-fit system is actually extremely innovative. Their ability to twist and lock into position and provide high pressure performance makes them an invaluable piece of technology for installers to have in their armour. There’s no denying that soldering is a skill that installers can and should have pride in, but push-fit fittings also hold an important role in today’s industry evolving.
大意： 焊接是个技术，而且 plumbers 引以为傲，但是 push-fit 在当今是领域中是创新的应用。不仅仅是操作简单, 有诸多优点。
Myth 2: Plastic push-fit fittings are only compatible with plastic pipes （只是用于塑料管？）
Not at all. Push-fit fittings are designed to lock any two pipes together and the material of the two pipes doesn’t even have to be the same, so it’s just as compatible with copper as it is with plastic.
绝对不是。可用于任何两种连接。
Myth 3: Plastic doesn’t last （寿命问题）
This is only the case for poor quality devices. Products that have been approved by the British Standards Institute, British Board of Agrément, or the Water Regulations Advisory Scheme (WRAS) will have a high level of quality and durability. By checking if all components are manufactured in the UK, which is the case for the JG Speedfit push-fit fittings, you can be sure that the product has been rigorously tested to meet high British and international standards.
除非是产品质量问题。这类技术通过了各种检测。只要通过标准的检测都没有问题。一定要真货。
Myth 4: Where’s the skill involved? （plumber 的技术要求从此就低了？）
Using push-fit fittings doesn’t remove the skill of being a plumber at all, which has many other job requirements that shouldn’t be underestimated or forgotten. In fact, arguably the most important skill for a professional plumber to have is the ability to use the most suitable system for the application, adding value to the end user by providing the most reliable, safe, and efficient service possible. So by using a push-fit fitting, you’re not losing a skill, just utilising another.
用push-fit fittings 不降低对plumber 其他方面的职业技术要求。恰恰相反，职业plumber 需要知道何时，如何，应用新技术为客户提供比传统更好的活； 更可靠，更安全，性价比更高的活。
