3/4" PEX-AL-PEX Compression Fitting Zoom

3/4" PEX-AL-PEX Compression Fitting

SKU:MP857

Brand: Mr. PEX

Mr. PEX
MP857 has been discontinued.
Direct Replacement:
SKU: 2447575
Brand: Mr. PEX
0

Specs

Size: 3/4"
PEX Size: 3/4"
Thread Size: 3/4"
Material: Brass
Application: Heating
Plumbing
Max Pressure (PSI): 200 psi
Warranty: 5-Year Limited Warranty
Thread Type: MPT
Standards Met: ASTM F877
ASTM F1960
NSF
Tubing Compatibility: PEX-AL-PEX
Max Temp (F): 200°F

Description for Mr. PEX MP857

Mr. PEX 3/4" Fitting Assemblies go from 3/4" PEX-AL-PEX to 3/4" NPT.

3/4" PEX-AL-PEX Compression Fitting

REVIEW SNAPSHOT®

by PowerReviews
Mr. PEX1/2" PEX-AL-PEX Compression Fitting
 
3.8

(based on 5 reviews)

Ratings Distribution

  • 5 Stars

     

    (3)

  • 4 Stars

     

    (0)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (1)

80%

of respondents would recommend this to a friend.

Reviewed by 5 customers

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Displaying reviews 1-5

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5.0

as expected

By mojo jo jo

from Colorado

Verified Buyer

Comments about 1/2" PEX-AL-PEX Compression Fitting:

The fitting works just fine

 
1.0

Would not fit my pipe.

By Kays Supply

from Carterville,IL

Verified Buyer

Comments about 1/2" PEX-AL-PEX Compression Fitting:

The fittings would not fit the PEX-AL-PEX I have. There may be different size OD pipe, but it would not fit over my pipe. However PexSupply accepted them back without any problems.

 
5.0

Best Connectors Ever

By Ed

from Myerstown, PA

Verified Buyer

Comments about 1/2" PEX-AL-PEX Compression Fitting:

Works great. I wish they would have been recomended when I bought my Pex-Al-Pex a fex years back. I had to go back and replace all the crimp fitting I used originaly.

(0 of 1 customers found this review helpful)

 
3.0

Can't solder 3/4" copper into the ID

By Aaron

from PA

Verified Buyer

Comments about 3/4" PEX-AL-PEX Compression Fitting:

Big downfall - Can't solder 3/4" copper into the ID of the fitting. MUST use 3/4" pipe thread coupling. So you need this fitting, 3/4" coupling or 90 and a 3/4" copper male adapter to go to copper pipe.

The fitting works the way it is advertised, NO problem with the fitting.

ADVICE - STAY AWAY FROM PEX-AL-PEX!! It is cheap but the fittings are almost impossible to find and if you do the selection is VERY limited and they can be expensive. Standard 3/4" pex anything will NOT work with Pex-AL-Pex.

 
5.0

pex-al-pex tube is hard to seal

By Dave

from Thunder Bay, ON

Verified Buyer

Comments about 3/4" PEX-AL-PEX Compression Fitting:

without the proper fittings, which these are the pex-al-pex tubing is hard to seal. These fittings are easy to use and no special tools required.

Displaying reviews 1-5

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Q&A: Ask the Questions, share answers

Do you have questions about this product?

get answers from real customers and in-house experts with AnswerBox.

13 Questions | 15 Answers
Displaying questions 1-10Previous | Next »
  • 3/4"" PEX-AL-PEX Compression Fitting

    Q:

    Will this qs style fitting work with Uponor Wirsbo MLC pex al pex tubing
    thanks
    Asked on 6/2/2014 by Peter from New york

    2 answers

    • VERIFIED BUYER

      A:

      Peter,
      I think these Pex-al-pex fittings are made to common respective standard
      sizes – if it says it will work with ¾ or 1” pex-al-pex they should. I’ve
      found the fittings periodically need to be retightened over the years…
      especially when you let the system go cold in the summer – that’s when
      they’re prone to leaking.
      Brian

      Answered on 6/7/2014 by Anonymous
    • VERIFIED BUYER

      A:

      Yes it should work fine
      Sent from my iPhone

      Answered on 6/2/2014 by Anonymous
  • 1/2" PEX-AL-PEX Compression Fitting

    Q:

    Will these fitting work on ExcelPex (now FlexAlpex) PEX-AL-PEX tubing?
    Asked on 9/25/2012 by EEB the EE

    1 answer

    • CUSTOMER CARE

      A:

      They will, as long as the tubing meets the specifications of standard PEX-AL-PEX (.490" ID and .636 OD for 1/2").

      Answered on 10/5/2012 by PexSupply Staff from NY
  • 3/4" PEX-AL-PEX Compression Fitting

    Q:

    What is the usage difference between this fitting and part # PAP-0750M? They both look to do the same thing, however one has an O-ring on the MPT and the other does not......Thanks for your help.....Tony
    Asked on 9/5/2012 by Tony from Harrison, NY

    1 answer

    • CUSTOMER CARE

      A:

      Parts MP857 and PAP-0750M are interchangeable and can be used in the same applications.

      Answered on 9/7/2012 by PexSupply Staff from NY
  • 3/4" PEX-AL-PEX Compression Fitting

    Q:

    Can these fittings be used with FostaPex?
    Asked on 7/24/2012 by none

    1 answer

    • CUSTOMER CARE

      A:

      No, FostaPEX tubing is only compatible with Viega PEX Press fittings.

      Answered on 7/26/2012 by PexSupply Staff from NY
  • 3/4" PEX-AL-PEX Compression Fitting

    Q:

    Is this fitting rated for natural gas lines?
    Asked on 10/20/2011 by Anonymous from Chesterton In.

    1 answer

    • CUSTOMER CARE

      A:

      No, it is not.

      Answered on 11/3/2011 by PexSupply Staff from NY
  • 3/4" PEX-AL-PEX Compression Fitting

    Q:

    Is it best to use teflon tape or liquid pipe tape for the outside fittings?
    Asked on 10/5/2011 by Anonymous

    1 answer

    • CUSTOMER CARE

      A:

      We would not recommend that you use anything on the compression side, due to the o-rings.

      Answered on 10/13/2011 by PexSupply Staff from NY
  • 1/2" PEX-AL-PEX Compression Fitting

    Q:

    Will these fittings work with Watts PAP5 tubing--the tubing box states that only fittings marked with ASTM F1281-2005 are compatible.
    Asked on 9/29/2011 by Anonymous

    2 answers

    • CUSTOMER CARE

      A:

      These fittings will not work with that tubing as per the manufacturer.

      Answered on 9/30/2011 by PexSupply Staff from NY
    • A:

      FYI--(I'm the original poster) I received these fittings (I had already ordered them) and right on the nut is stamped F1281-2005. Hurray for making my life easier!

      Answered on 10/4/2011 by Mike from Chicago
  • 3/4" PEX-AL-PEX Compression Fitting

    Q:

    Is any type of expansion tool needed to affix the pex al pex tube onto the fitting securely, before tightening the fitting? Also, what is the best cutter for pex-al-pex?
    Asked on 9/19/2011 by The Doctor from Yonkers, NY

    1 answer

    • CUSTOMER CARE

      A:

      You will need a chamfering tool to prepare the tubing for the fitting. Most PEX cutters also cut PEX-AL-PEX tubing.

      Answered on 9/21/2011 by PexSupply Staff from NY
  • 1/2" PEX-AL-PEX Compression Fitting

    Q:

    Will these fittings work with the 1/2" Wirsbo MultiCor pex al pex tubing?
    Asked on 9/9/2011 by Anonymous

    1 answer

    • CUSTOMER CARE

      A:

      Yes, they will.

      Answered on 9/9/2011 by PexSupply Staff from NY
  • 1/2" PEX-AL-PEX Compression Fitting

    Q:

    Can these be used at the fixture ends of a home run system to supply fixtures not normally used for drinking water, such as baths, showers, toilets, dishwashers, washing machines, and laundry sinks? (Did I get that list right?)

    What are the access requirements for these (compression) fittings? Can they be used "in walls" immediately behind stop valves or in conjunction with shower mixing valves, if access is explicitly provided say via an access panel? Or incidentally say in an unfinished utility closet? Can they be used between floor joists immediately below stop valves or risers, if access to the fitting is provided say via the basement? Crawlspace? Can they be used between the floor joists of a second floor, if access is provided via the first floor, but a leak may cause some damage before it is detected?
    Asked on 5/2/2011 by mysterylectricity from san fran cali

    1 answer

    • CUSTOMER CARE

      A:

      No, the fittings are not NSF approved. You can use them for heating, but not for plumbing. We recommend that you follow local code requirements for the placement of the fittings (most likely will be the same practice you would use for copper).

      Answered on 5/3/2011 by PexSupply Staff from NY
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