#1.7 混合阀选型：为什么管径具有误导性？

欢迎收听《Ask Caleffi》播客，现场直击实验室。

Welcome to the Ask Caleffi podcast coming at you live from the lab.

各位，咱们今天聊点什么？

Guys, what do we

有什么新鲜事儿吗？

got going on?

Plumbing、水力系统、专家见解，还有不少实战中的故事。

Plumbing, hydronics, expert insights, and a few stories from the trenches.

不管你是在现场干活，

Whether you're on

还是只是旁听，

the job or just along for

我们都能满足你的需求。

the ride, we've got you covered.

今天我们要聊聊混合阀，包括恒温混合阀和电子混合阀。

Well, today, we're gonna talk about mixing valves, thermostatic mixing valves, and electronic mixing valves.

我们的产品线很丰富，从1017V到1070V的阀门都有，选择不少，今天我们就来聊聊这些阀门，它们用在哪儿、怎么工作的，希望能让大家更清楚里面到底是什么原理。

I mean, we do a pretty good job of bringing a lot of different offerings to the table from 1017V to 1070V valves, there's quite a few options and we're just going to have a conversation about them, know, where they go, how they work and hopefully that helps everybody else understand what goes on inside of one of them.

所以马特，你面前就放着一个。

So Matt, you got one right there in front of you.

这是个ASSE 1017阀门。

It's an ASSE 1017Valve.

没错。

Correct.

对，这是我们的521系列，算是我们的主力产品，特别适合家用和小型商用场景。

Yeah, this is our five twenty one series, kind of our standard workhorse especially for residential applications, small like commercial applications.

它一般装在分配点的位置。

This would be installed at the point of distribution.

分配点，抱歉，说错了，谢谢。

Point of distribution, I'm sorry, thank you.

你可以把十到十二加仑每分钟的水流，调节到你想要的任意温度。

And you can temper ten, twelve GPM down to whatever you want to set it down to.

是的，就像你说的，这是我们的一款经典产品，十字形的混水阀。

Yeah, like you said it's a very legacy product for us, it's the cross shaped mixing valve.

这算是

Is that kind

凯莱菲推向市场首款恒温阀吗？

of the first thermostatic that Caleffi brought to market?

没错，这是我们北美市场上的第一款，你一针见血。它能处理最高约12加仑每分钟、压降20psi的情况，对吧？

It is the very first in our market, in the North American market, so you hit the nail on the head with it, we're able to handle up to about 12 GPM at a 20 psi drop, right?

对，没错。

Correct, yep.

如果这个参数符合你的需求，那这款阀就适合你。关键还是应用场景，你提供的应用信息越详细，我们就能越准确地帮你选对阀门。

So if that's acceptable, then this is the right valve for you, I mean application is always key, the more information you can give us about the application you're working through or working with, you'd be able to we'll be able to help you pick the right valve.

当然。

For sure.

对。

Yeah.

选混合阀时，这些信息非常关键。

That's that information is critical when selecting your mixing valve.

但对于普通独栋住宅来说，这种阀门完全够用了。

But I mean, for typical single family residence, this is going be more than enough valve.

是的， definitely。

Yeah, definitely.

为了澄清一下，我们刚才提到了一个ASSE标准，对吧？

And to kind of clarify things like we threw out an ASSE standard, right?

ASSE，你能给我们讲讲这个组织吗？

ASSE, what can you tell us about ASSE?

ASSE是美国卫生工程师协会的缩写，算是一个行业规范机构。

Right, so ASSE stands for the American Society of Sanitary Engineers and they are kind of a governing body.

他们制定各种各样的标准。

They make all kinds of standards.

其中有一个标准叫ASSE 1017，专门规范分配点的混合阀。

One standard, ASSE 1017, governs point of distribution mixing valves.

另一个和混合阀相关的标准是ASSE 1070，适用于末端用水点，比如洗手池混水阀或者罗马浴缸混水阀，这类阀门只控制一个或两个用水装置，限制也不同。

Another one pertinent to mixing valves is ASSE 1070 and that's point of use, so that's going to be like a sink mixer, roman tub mixer, something that's just controlling a single or one or two fixtures and those have different limitations to them.

比如1070型阀门，最高温度不能超过120华氏度。

Like a ten seventy valve, you cannot set above a 120 degrees Fahrenheit.

这就是上限了。

That's the cutoff.

它们必须配备进水止回阀，而1017型则不一定需要。

They require inlet check valves, where a ten seventeen could have that.

1017型可以调到大约150华氏度。

It can be turned up to, I believe it's a 150 degrees.

对。

Yep.

而且1070标准强制要求防烫伤保护功能。

But and then there's there's also scald protection is is a must have in in ten seventy.

一旦热水或冷水压力突然丢失，它会立即完全切断水流。

So in the event that you lose pressure on the hot or the cold, it's gonna shut down flow completely basically.

没错，这个阀芯的设计就是干这个的。如果你看看刚才你手里那个剖面图，阀芯本身是限位装置，其实更准确地说，是旋钮限制了阀芯能开多大、关多小，我们就是靠这个来调节热水的多少。

Yeah, and that's what that cartridge is designed to do, so if we were to take and look at that cutaway that you had in hand there, that cartridge is the limiter, or actually the knob is the limiter of how far the cartridge can open and close, So that's how we're making that adjustment for more hot or less hot Yep.

水流进入

Water going into

没错，弹簧的张力取决于你这个旋钮的设定，张力会控制阀片上下移动，从而调节冷热水的混合比例。

Yeah, the spring tension is governed by what setting you have on this knob and then that tension is gonna restrict that shutter up and down, mixing more or less hot or cold as needed.

没错，恒温元件会根据出水温度的变化来驱动阀片动作。

Yeah, that thermostatic element is going to react based on that outlet temperature to drive those shutters.

正是如此。

Exactly.

完全正确。

Absolutely.

我猜你，瑞安，也接到过很多关于这种混水阀的电话吧？我以前就经常接到。

And I bet, Ryan, you take a ton of calls, I know I did, on on these mixing valves all the time.

是的。

Yeah.

没错。

Definitely.

每个人安装的方式都不一样，总会遇到各种问题，或者设备就是不正常工作。

Everybody's, you know, installing stuff different and got questions or just not working properly.

是的。

Yeah.

它们在管道和水暖系统中也很出色。

They're great for plumbing and hydronic as well.

是的，我的意思是，我们

Yeah, I mean, we

在现场用过很多这类产品。

used a ton in the field.

可能不是这一款，但类似的东西，我们用它来控制进入混凝土地板的水温。

It might not have been this particular model, but something similar where we're trying to bring the delivery temperature of the water going into, we'll say a concrete floor.

我们得把水温降下来，免得混凝土开裂，对吧？

We're trying to bring that down so we don't crack the concrete, right?

适用于低温辐射供暖系统。

For low temperature radiant applications.

没错。

Exactly.

这样用起来确实很方便。

So it's pretty handy to have that way also.

再回到1070阀门，我想大家会想知道，这东西该装在哪儿？

Going back to the ten seventy valve, I think people wanna know, well, where should this go?

我们之前大概讲过，不过我觉得最简单的方式，是咱们这边的工程师凯文很久以前告诉我们的——从数字角度来理解。

We kind of explained it already, but I think the easiest way our buddy Kevin over here, the engineer, he explained it to us a long time ago that, think about it numerically.

1017这个型号，永远要装在1017之前。

The number ten seventeen always goes before ten seventeen.

所以1017应该直接装在热水器或者热源设备上，也就是系统的起点。

So ten seventeen right at your water heater or your heat plant, whatever, that's your source.

而1070、1069、1071这些型号虽然标准不同，但都属于防烫伤标准，它们的应用位置会更靠系统下游。

And 1070, 1069, 1071, 1069, 1071 are different standards, but they are an anti scald standard, They still have that application, those go further out in the system.

所以1017型阀门一定要先装，1070型的往后放。

So 1017s always go first, 1070s later.

你接到过多少次电话，说有人把1070阀门直接装在热水器上？

I don't know how many calls you've gotten about somebody putting a ten seventy valve right off a water heater.

丹和我以前经常接到这种咨询。

Dan and I used to get them all the time.

你就会问，你为啥把它装那儿？

And you go, why did you put that there?

因为他们觉得这是个硬性限温，最高只能到120度。

Because it is hard stop at one twenty.

一旦温度超过这个值，阀芯就开始自动关小了。

That cartridge is starting to close off once it gets any higher.

对。

Yep.

从混合出口出来的水，温度绝对超不过120度。

They can't get anything over one twenty out of the mixed outlet of it.

而且确实如此。

And yeah.

就像你所说的，有止回功能。

Like you said, stops.

这完全取决于实际应用场景。

It's all about application.

没错，就是这样。

Yep, it is.

Exactly.

Exactly.

而且大家还得记住，管道系统里是有压力损失的。

And people got to remember too, there's losses in the system.

所以你把阀门调到120，并不意味着二楼浴室的出水压力也能达到120。

So just because you set the valve at 120 doesn't mean you're getting 120 all the way out to your 2nd Floor bathroom.

是的，你

Yeah, you

整个管道往上走都会有热量损失。

got heat loss that whole way up.

很可能管道没做保温，离得这么远，因为管道长、弯头多、内壁摩擦大，水流根本到不了足够的量，所以你可能得稍微调一下。

Chances are that piping is not insulated, you're just not getting enough flow that that far because of all the pipe in the elbows, the friction loss inside, so it's you might have to tweak that little bit.

你以为阀门调到120，热水就能达到120，其实未必能到水龙头那儿。

You might have to adjust it just because you think you need a 120 out of that valve, doesn't mean you're getting a 120 into the faucet.

对。

Right.

所以得慢慢调试，我总是跟人说，拿你手头最准的温度计，哪怕是你烤肉用的那个也行。

So it takes some adjusting and I always tell people, look, use your favorite thermometer, your most accurate thermometer out of the bag, even if it's the meat thermometer you

用在

use for

烤架上，

the grill,

去最远的那个水龙头那儿，打开水，让它流几分钟，看看实际温度是多少。

and go to that farthest faucet and turn it on and let it run for a few minutes, see what you got.

结果你发现，这儿的水温才113度，这可不行。

And you go, wow, we're only getting 113 degrees at this, this isn't acceptable.

迟早有人要投诉。

Someone's going to complain.

于是我们下去把阀门调高一点。

So we go down and we adjust that valve up.

你的调节设置在不同情况下可能不一样，关键要看进入阀门的冷水温度是多少。

Well, your adjustment setting might be different in different applications and it's going to depend on what your source water temperature is coming to that valve.

如果进水温度是130度，你要调到更高的数值才能让出水达到120度；要是进水有150度，那就不用调那么高了，道理就在这儿。

If you're in an application where you're 130 degree water coming to the valve, you may have to set to a higher number on the adjustment range to get 120 out than you would if you're 150 degree Exactly.

进水温度是个关键点。你有没有接过这样的电话，Ryan？人家说混水阀出水达不到120度，结果可能是热水器还没热透，或者热水器的设定温度本来就不够高。

Entering water I think that's a key and how many times have you taken that call Ryan where someone has a mixing valve and they're like it's not delivering 120 degree water, well maybe the water heater is still coming up to internal temperature or maybe the water heater source temperature is not set high enough.

对，毕竟水是混合出来的。

Right, because it's always going to be mixed in.

每个阀门都有温差范围，你得——说实话，翻一下说明书看看，因为各家产品都差不多，但又不完全一样。

So you have a differential, every valve has a differential, you just have to, I hate to say it, you had to open the pamphlet and look at it because everybody's product is pretty close, but not quite.

一个阀门可能差20度，另一个可能

One valve might be 20 degrees, another one might

差17度。

be 17.

我们之前提到过阀门的ASSE 1070和1017认证。

So we talked about the ASSE 1070 and 1017 rating in the valves we have.

Caleffi的另一款产品值得考虑，就是我们的AngleMix五二〇系列。

Another product to keep in mind that Caleffi has is our AngleMix, our five twenty series AngleMix.

这款阀门的亮点在于，热水入口和混合水出口在一条直线上。

What's really nice about this valve is that the hot inlet and the mixed outlet are in a direct line with each other.

如果你是在水箱上方做改造，水箱出来的热水直接接入阀门的热水入口。

If you're retrofitting this on top of a tank, that hot outlet coming out of the tank is coming into the hot inlet on the mixing valve.

混合后的水从正上方直接输出，回到建筑管道里。

The mixed outlet going back to the building is coming directly out above that.

冷水入口则呈90度角接入。

And then the cold comes off at a 90 degree angle.

这样能帮你省下一些管件。

So it saves you some fittings.

而且它的感温元件反应特别快。

Really quick reacting cartridge too.

它能完全关闭热水和冷水通道。

So it has the ability to close hot and cold 100%.

性能这么好，我们甚至成功获得了双重认证。

And it's so good that we were able to actually get this dual listed.

这款型号能适配2CV阀体，同时满足ASSE 1017和1070标准。

So this model will fit in the 2CV body, will meet the ASSE 1017 and 1070 standard.

对，没错。

Right, yeah.

真正获得双重认证的型号，顶盖有点不一样，里面有个调节螺钉，能把出水温度限制在120度，而且还有进水止回阀，以及那个反应极快的感温元件，一旦出现温度失控或两侧压力丢失，它会立即关闭。

The one that actually is dual listed has a little bit different cap and it's got kind of a set screw inside there that limits that outlet temperature to 120 and then obviously it's got inlet check valves and that again that real quick reacting element inside there that will shut off in the event of runaway temperatures or pressure loss on either side.

它确实能有效防止温度逐渐升高。

Yeah, it does a nice job of helping prevent recert creep.

这种阀门市面上很少见，能做得到这一点。

It's one of the few valves out there that does that.

据我所知，除了1070型号的阀，就数它这款恒温阀能做到。

I mean, to my knowledge, it's the only thermostatic that does that aside from a ten seventy valve.

对吧？

Right?

没错。

Right.

是的。

Mhmm.

这设计挺巧妙的，不过得注意，这款产品在20psi压降下最大流量只有每分钟九加仑。

So it's a it's pretty neat pretty neat setup, but you're limited, you know, nine gallons a minute on at a 20 psi drop with that product.

但我喜欢它，因为能减少接头数量。

But I like it for the fact that it saves fittings.

这阀门外观也很酷，而且

It's just a cool looking valve and it

是的

Yeah.

这个设计太巧妙了。

The design is genius.

我第一次看到的时候，真的觉得特别厉害。

I mean, the first time I saw that, I thought it was just brilliant, honestly.

混合出口和热水入口在一条直线上，让改造起来特别方便。

Like, that mixed outlet and hot inlet right in line with each other is it makes it so easy to retrofit.

是的

Yeah.

这产品不错。

It's a nice product.

它的温差比五二一型号更小。

And the temperature difference on there is much closer than the five twenty one.

对

Yep.

是的

Yeah.

温差控制得更精准了

Much tighter temperature

对

Yep.

温度波动范围更小

Temperature band.

所以不用把水箱温度调得那么高

So you don't have to crank that tank temp up so high.

对

Yep.

明白，先生

Yes, sir.

如果遇到再认证泄漏的情况，我们另一款能完全密封的产品是电子混水阀

Well, the only other product that we have that would close off bubble tight in a case of recert creep would be our electronic mixing valve.

所以这完全是另一回事，对吧？

So that's a totally different animal, right?

我们依赖控制系统向执行器发送电压，再通过传感器来协调，对吧？

We're relying on a control to send voltage to an actuator that communicates through sensors, right?

我们有一个混合出水传感器，还有一个回水传感器，就基本的电子混水功能而言，回水传感器只是用来监测的。

We have a mixed outlet sensor and then we have a recirc return sensor that for basic electronic mixing purposes, it's just a monitoring sensor.

它只告诉我们回水温度是多少，但并不会影响阀门的实际动作。

It just tells us what the recirc is coming back, it has no play on what the valve is actually doing.

真正关键的只有混合出水传感器。

The only sensor that really matters is the mixed outlet sensor.

是的，电子混水阀确实很不错。

Yeah, the electronic mixing valve is really nice.

它能满足ASSE 1017关于分配点的标准要求。

It's going meet the ASSE 1017s standard for point of distribution.

更像是一种适用于多户商用的混水阀，阀体流量系数很高，即使接口很小，也能支持大流量。

More of like a multi family commercial mixing valve, very high Cv valve body, very high flow rates even in the small connection sizes.

但我们从四分之三英寸到三英寸的法兰都有多种产品可供选择，基本能适配各种应用场景。

But we have a lot of offerings from three quarter all the way up to three inch flange to kind of

满足各种需求。

fit any application.

你刚才提到高Cv值。

You said something there, high CV.

高Cv值就意味着大流量。

High CV means high flow.

每当我们讨论大流量阀门时，我脑子里总会冒出一个问题：流量是上去了，但在低流量情况下，它还能稳定响应吗？

Whenever we're talking a high flow valve, there's something, a little flag that comes up in the back of my head that says, we get all that flow, but how is it going to react on the bottom end on a lower flow situation?

这个我们都懂，对吧？

So we all know, right?

因为我们都接过这种电话，现在还在接。

Because we've all taken the phone calls and we still do.

每天都接。

Every day.

是的

Yeah.

你对这个有什么想分享的吗？

What do you wanna share about that?

你得记住最小流量，也就是最低流量要求。

You gotta keep in mind the minimum flow, the flow minimum.

四分之三英寸的最小流量是2.2加仑每分钟。

Three quarter inch is 2.2 GPM.

两英寸的阀门最小流量最高能到将近9加仑每分钟，而且这个流量必须全天候、全年无休地持续通过阀门。

Two inch will go all the way up to almost nine GPM for a minimum flow that we always have to have twenty four hours a day, seven days a week going through that valve.

对的。

Yeah.

这就是最低流量的要求。

That's minimum flow requirements.

没错。

Right.

对。

Yeah.

如果我们达不到这个流量，这个阀就会开始波动，很难稳定控制混合出水口的设定温度。

And if we don't meet that, this valve will start to hunt, and it'll have a hard time keeping that set temp coming out of the mixed outlet.

百分之百。

A 100%.

这些阀门的设计流量其实也很高。

Those valves have really high design flow rates as well.

瑞安，你之前讲了很多关于最小流量的事。

Ryan, you talked a lot about minimum flow rates.

当你开始考虑设计流量时，我们有一张图表，列出了在7.5磅每平方英寸压差下的推荐设计流量，这才是选阀时真正需要关注的。

So when you start looking at design flow rates, we have a chart that has recommended design flow rate at a 7.5 psi pressure drop, and that's really what you need to consider when you're sizing the valve.

不是管径大小——我们经常遇到这种情况：有人去现场看到一个两英寸的恒温混合阀，就直接按建筑需求套用，但其实你得看看我们电子混合阀的设计流量，因为你不该把两英寸的阀再用回那种场景。

Not pipe sizing, we get that a lot where you'll walk into a job site that has a two inch thermostatic mixing valve, take a look at the requirements for that building and the design flow rates of our electronic mixing valve because you're not going to put a two inch back into that application.

你得认真看设计参数，选对合适的尺寸。

You want to really look at the design and size that properly.

当你看到管道尺寸和阀门尺寸完全一致，比如两英寸的管道配两英寸的阀门，几乎每次都是选大了。

When you see a pipe size to valve size one to one, like a two inch valve on a two inch line, almost every single time that is going to be oversized.

阀门比实际管道小一到两英寸，甚至三英寸的情况，其实很常见。

It's not uncommon to have one to even two, sometimes even three pipe size smaller valves than the actual pipe size that it's serving.

正因为这样，当流量较低时，你会看到温度控制不稳定，阀门因为选得太大而频繁波动。

And because of that you can see temperature instabilities hunting in that control at lower flow rates because that valve is so greatly oversized.

没错。

Exactly.

是啊，这种情况我们见得太多了，通常是因为工程师选了某个规格，等产品装好后，现场的人打电话来问：你们这个流量是怎么算出来的？

Yeah, we've seen it plenty of times, most of it is, you know, an engineer specs one thing, we get a phone call from the guy on the job, it's usually after the product is installed, hey, how did you come to that flow rate?

他们用的还是老式的亨特曲线数据，对吧？

I mean, they used the old hunters curve numbers, Right.

当年那些数据，甚至到现在，到底有多大程度的过度设计？

And how grossly oversized were those numbers back in the day even still?

我举个例子，有一次接到一个技术咨询，是田纳西州一家美发店，他们把原来的1.5英寸恒温混合阀换成了1.5英寸的防军团菌混合阀，但实际测算这个建筑的需求时发现，就算用即热式热水器，最大出水流量也不超过每分钟28加仑。

I mean, I look at an application, a tech call I took one time, it was a hair salon in Tennessee where they took out an inch and a half thermostatic mixing valve and they put an inch and a half legio mix in, and when we actually looked at the requirements of that building, it was like maximum that even though tankless water heaters could put out was 28 gallons per minute.

也就是说，你选的阀门设计流量是热水器实际出水能力的三倍。

It's like, okay, so you're sized with a design flow rate of a valve that's three times what the water heaters can even produce.

这显然选型不对。

So that's not applied right.

我们后来换回了一个四分之三英寸的阀门。

I think we put a three quarter inch back in.

对。

Yeah.

这种情形其实很常见，管道粗得吓人，阀门却小得可怜。

And it's not uncommon to see something that looks so silly, giant piping, tiny little

阀门。

valve.

但那个恒温阀本身的选型反而是对的。

But the thermostatic valve was probably applied right.

是的。

Yeah.

因为那个流量系数的问题。

Because of the CV values.

对。

Right.

我前两天在密歇根州看一个酒店的项目，当时有个水管工，用的是三英寸的管子，他打电话过来说，嘿，我觉得我得配个三英寸的阀门。

I just was in Michigan looking at a hotel job with a plumber, three inch pipe, the guy calls and says, Hey, I think I need a three inch valve.

咱们过去看看

Let's go take a

你看

look at

那个项目，我们还没走多远呢。

that job, we're not that far.

你进去看看那个水箱，我没开玩笑，在这家拥有120间客房的大型酒店里，那个机械间里的水箱足足有十二英尺高。

Go in there, the tank, I kid you not, is twelve feet tall in this giant mechanical room, 120 room hotel.

这是座高层酒店，所以他们做了增压处理，里面各种设备一应俱全。

It's a high rise hotel, so they're boosting and they got all sorts of things going on there.

走进机房，看到那个巨大的水箱。

And walk into the mechanical room and see this behemoth of a tank.

进水是四英寸，出水是三英寸。

It's being fed with four inch and comes out three inch.

我问他，是什么让你觉得需要一个流量超过每分钟五百加仑的阀门？

Said what what made you decide that you needed a valve that could flow over 500 gallons a minute?

他一听，眼睛都快瞪出来了。

He just his his eyes just about jumped out of his skull.

多少？

How much?

对啊。

Yeah.

那你做过什么调研吗？

So what do you have for research?

我这儿有个两英寸的。

Well, I got a two inch.

不错。

Cool.

你有个两英寸的。

You have a two inch.

你知道它的流量是多少吗？

Do you know what it flows?

泵就在上面。

Well, the pump's up there.

当然，你还得用一架二十英尺的梯子才能够到它。

And of course, you needed a 20 foot extension ladder to get to it.

它挂得太高了，根本看不清上面的数字，所以我们也不知道它的性能曲线是多少。

And it was way up there and you can't read the numbers off it, so we don't know what the curve is on it.

他们说，其实有工具能帮我们，不用自己瞎琢磨，叫超声波流量计。

They said, you know, there are tools to help us with this, so we don't have to try and figure this all out, it's called an ultrasonic flow meter.

这东西真棒。

It's a wonderful thing.

这东西不便宜，但如果你想准确了解这种现有系统里的水流情况，可以把传感器装在那根两英寸的回水管上，它连着冷水管道，运行十分钟就能得出实际流量数据。

It's pricey, but if you want to be able to know exactly what you got in an existing system like that, you can put the sensor on the two inch recirc line that's tied back into the cold and let it run for ten minutes and it'll give you a reading of what is going on there.

可能是每分钟二十加仑，也可能别的数值。

It might be 20 gallons a minute or whatever it is.

现在我们知道这个系统里的最低流量了，也清楚得换一个新的混水阀，得在这儿装一个。

Okay, we know what our minimum is in this existing system, we know we need a new mixing valve, we need to put a mixing valve in here.

那我们还得做些什么，才能确定该用多大尺寸的阀门呢？

What else do we have to do to figure out what size valve we need here?

你得把十二英尺的梯子架出去，至少得固定在那个从大水箱出来的三英寸管道上，让它连续运行一周，因为只有这样才能看到流量的高峰和低谷。

Well, you're gonna have to put the 12 foot ladder out to at least strap onto that three inch that's coming out of this monster tank and let it run for, I say a week, because a week you're gonna get the peaks and valleys, right?

比如周一通常是住客登记的日子，流量会明显上升。

You're gonna get Monday is usually check might be a check-in day for the business people.

周末的客人已经退房了，所以流量会低下来。

It's they've already the the weekenders have checked out.

所以你会看到一个低谷，然后到了周末又会回升。

So you're gonna have, you know, a valley down and then it's gonna come back up towards the weekend.

如果你能拿到周末这两天——也就是最忙的两天——的数据，就能生成一份报告。

And if you get the two days of the weekend, the busiest days, you're gonna get a report.

报告会详细显示流量数据，我们可以一起看，比如发现最高流量都没超过每分钟150加仑。

It'll actually give you a report and we can go through that report with you and go, you know, we didn't see a flow higher than a 150 gallons a minute.

那你就没必要用三英寸的阀门。

You don't need a three inch.

没错。

Right.

也许用两个一英寸半的并联就够了，或者……

Maybe you can get by with a pair of inch and a halfs or Yeah.

用一英寸四分之一的也行，类似这样。

Inch and a quarters or something like that.

为了保险起见，用两个小阀门并联运行是个好办法，万一一个出问题还有备用，不过很多时候大家也直接选一个合适尺寸的，照样能用。

It's good to run two smaller valves in parallel for redundancy just in case something happens, But it's not uncommon where they'll just size one valve and be fine.

对。

Right.

对。

Right.

就像你说的，那个超声波流量计虽然贵，但能省下你很多后期的麻烦和时间。

Like you said, that ultrasonic sensor flow meter, it's pricey, but it's gonna save you so much time and headache on the back end.

第一次就做对。

You get it right the first time.

是的。

Yep.

对。

Right.

你真的清楚

You really know what

自己在选型和设计什么。

you're sizing for and designing for.

没错。

Yeah.

所以这话你听听就好，别太当真。

So take that with a grain of salt.

说到底，不管你的应用场景是什么，我们都有合适的产品能满足你。

I think when it comes down to it, I mean, it doesn't matter what your application is, we're going to have a product that's going to fit that.

当然。

Definitely.

当然。

Definitely.

我们这儿随时有人接电话，帮你弄清楚你需要什么。

And we always have someone here to answer the phone and help you figure out what you need.

那本期节目就到这里了。

So that's a wrap for this episode.

有什么问题或者想分享的故事吗？

Got questions or stories to share?

我们特别期待听到你的声音。

We'd love to hear from you.

随时联系我们，让我们的对话继续下去。

Reach out, and let's keep this conversation going.

别忘了

Don't forget

订阅节目并在你收听的平台留下评价。

to subscribe and leave a review wherever you listen.

我们下期再见，保持好奇，让系统平稳运行。

Until next time, stay curious and keep your systems running smoothly.