Features & Benefits
Comprehensive and flexible range
Ensures rapid installation.
No loose parts
A near-single unit construction allows for quick and easy installation.
AMETAL®
Dezincification-resistant alloy that guarantees a longer coupling lifetime, and lowers the risk of leakage.
Technical Information
Application:
Polyethylene piping, SDR 11 and SDR 17, of material PE40, PE80, PE100 and PE100RC according to EN 12201.
NOTE: Use TA's reinforcing bush (liner) for SDR 11 20-50 mm and for SDR 17 32-63 mm. See Accessories.
For PVC pipes with special thrust screw and cone, see Accessories.
PRK-coupling with FPL thrust nut for soft and hard copper pipes and soft steel pipes. A support bush must be used for soft copper and steel pipes. See catalogue leaflet FPL for complete details.
Dimensions:
16 to 63 mm
Special couplings not included in the standard range can be produced by means of reductions.
Max. working pressure:
Same as that appropriate for the piping.
(Coupling max 1.6 MPa = 16 bar).
Max. vacuum:
99% = 750 mm Hg
Temperature:
Max. working temperature: 40°C
Material:
Body: AMETAL® or gunmetal (allows underground installation).
Thrust screw: Acetal plastic
Thrust screw for dim 63, of AMETAL® with cone of Acetal plastic.
AMETAL® is the dezincification resistant alloy of IMI Hydronic Engineering.
Threads:
All bodies have pipe threads, which can be used as pipe connections.
Approvals:
Approved for tapwater systems by RISE Certification, Sweden.
(Not valid for sliding straight coupling 53 423-0xx).
Articles
Reducing female adapter
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_ESC/Drawings/PRK/With_M/53_402-720_M.gif)
DxA*** | d | L* | EAN | Article No |
20xG1/2 | G3/4 | 71 | 7318792883507 | 53 402-720 |
25xG3/4 | G1 | 77 | 7318792883606 | 53 402-725 |
32xG1 | G1 1/4 | 92 | 7318792883101 | 53 402-632 |
40xG1 | G1 1/2 | 97 | 7318792881701 | 53 402-010 |
40xG1 1/4 | G1 1/2 | 101 | 7318792883200 | 53 402-640 |
50xG1 1/2 | G2 | 111 | 7318792883309 | 53 402-650 |
63xG2 | G2 1/2 | 130 | 7318792883408 | 53 402-663 |
Incl. reinforcing bush (red) for SDR 17 pipes.
Straight coupling with FPL
Incl. reinforcing bush (red) for SDR 17 pipes.
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_ESC/Drawings/PRK/With_M/53_403-240_M.gif)
D1xD2 | d | A | L* | EAN | Article No |
40x28 | G1 1/2 | M34x1,5 | 99 | 7318793857705 | 53 403-240 |
*) L refers to mounted coupling.
**) Male short conical thread.
***) Connects to plastic pipe with thrust screw 53 431.
Straight coupling
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_ESC/Drawings/PRK/With_M/53_401-116_M.gif)
D | d | L* | EAN | Article No |
16 | G1/2 | 78 | 7318792880803 | 53 401-116 |
20 | G3/4 | 84 | 7318792880902 | 53 401-120 |
25 | G1 | 93 | 7318792881107 | 53 401-125 |
32 | G1 1/4 | 113 | 7318792879807 | 53 401-032 |
40 | G1 1/2 | 120 | 7318792879906 | 53 401-040 |
50 | G2 | 140 | 7318792880209 | 53 401-050 |
63 | G2 1/2 | 164 | 7318792880506 | 53 401-063 |
Female adapter
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_ESC/Drawings/PRK/With_M/53_402-116_M.gif)
DxA*** | d | L* | EAN | Article No |
16xG1/2 | G1/2 | 68 | 7318792882708 | 53 402-116 |
20xG3/4 | G3/4 | 73 | 7318792882906 | 53 402-120 |
25xG1 | G1 | 81 | 7318792883002 | 53 402-125 |
32xG1 1/4 | G1 1/4 | 95 | 7318792881800 | 53 402-032 |
40xG1 1/2 | G1 1/2 | 100 | 7318792881909 | 53 402-040 |
50xG2 | G2 | 117 | 7318792882104 | 53 402-050 |
Male adapter
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_ESC/Drawings/PRK/With_M/53_403-116_M.gif)
DxA** | d | L* | EAN | Article No |
16xR1/2 | G1/2 | 40 | 7318792884504 | 53 403-116 |
20xR3/4 | G3/4 | 45 | 7318792884603 | 53 403-120 |
25xR1 | G1 | 51 | 7318792884702 | 53 403-125 |
32xR1 1/4 | G1 1/4 | 60 | 7318792884207 | 53 403-032 |
40xR1 1/2 | G1 1/2 | 64 | 7318792884306 | 53 403-040 |
50xR2 | G2 | 73 | 7318792884405 | 53 403-050 |
Reducing male adapter
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_ESC/Drawings/PRK/With_M/53_403-720_M.gif)
DxA** | d | L* | EAN | Article No |
20xR1/2 | G3/4 | 58 | 7318792885303 | 53 403-720 |
25xR3/4 | G1 | 64 | 7318792885402 | 53 403-725 |
32xR3/4 | G1 1/4 | 75 | 7318792884009 | 53 403-006 |
32xR1 | G1 1/4 | 77 | 7318792884900 | 53 403-632 |
40xR1 | G1 1/2 | 83 | 7318792884108 | 53 403-010 |
40xR1 1/4 | G1 1/2 | 83 | 7318792885006 | 53 403-640 |
50xR1 1/2 | G2 | 92 | 7318792885105 | 53 403-650 |
63xR2 | G2 1/2 | 109 | 7318792885204 | 53 403-663 |
Female elbow
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_ESC/Drawings/PRK/With_M/53_405-116_M.gif)
DxA*** | d | L1* | L2* | EAN | Article No |
16xG1/2 | G1/2 | 47 | 37 | 7318792888205 | 53 405-116 |
20xG3/4 | G3/4 | 53 | 41 | 7318792888304 | 53 405-120 |
25xG1 | G1 | 60 | 47 | 7318792888403 | 53 405-125 |
32xG1 1/4 | G1 1/4 | 73 | 55 | 7318792887802 | 53 405-032 |
40xG1 1/2 | G1 1/2 | 82 | 61 | 7318792887901 | 53 405-040 |
50xG2 | G2 | 96 | 73 | 7318792888007 | 53 405-050 |
63xG2 1/2 | G2 1/2 | 115 | 85 | 7318792888106 | 53 405-063 |
Elbow
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_ESC/Drawings/PRK/With_M/53_404-116_M.gif)
D | d | L* | EAN | Article No |
16 | G1/2 | 47 | 7318792886706 | 53 404-116 |
20 | G3/4 | 53 | 7318792886805 | 53 404-120 |
25 | G1 | 60 | 7318792886904 | 53 404-125 |
32 | G1 1/4 | 73 | 7318792886300 | 53 404-032 |
40 | G1 1/2 | 82 | 7318792886409 | 53 404-040 |
50 | G2 | 96 | 7318792886508 | 53 404-050 |
63 | G2 1/2 | 115 | 7318792886607 | 53 404-063 |
Reducing male elbow
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_ESC/Drawings/PRK/With_M/53_406-006_M.gif)
DxA** | d | L1* | L2* | EAN | Article No |
32xR3/4 | G1 1/4 | 73 | 48 | 7318792889103 | 53 406-006 |
32xR1 | G1 1/4 | 73 | 48 | 7318792889202 | 53 406-007 |
40xR1 | G1 1/2 | 82 | 50 | 7318792889301 | 53 406-010 |
40xR1 1/4 | G1 1/2 | 82 | 50 | 7318792889400 | 53 406-011 |
63xR2 | G2 1/2 | 115 | 70 | 7318792890208 | 53 406-663 |
Nickel-plated
Female elbow with wallplate
Nickel-plated
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_ESC/Drawings/PRK/With_M/53_418-716_M.gif)
DxA*** | d | L* | L2 | C/C | EAN | Article No |
16 x G1/2 | G1/2 | 57 | 21 | 40 | 7318792900204 | 53 418-716 |
20 x G1/2 | G3/4 | 57 | 21 | 40 | 7318792900303 | 53 418-720 |
25 x G3/4 | G1 | 61 | 25 | 40 | 7318792900402 | 53 418-725 |
*) L, L1, L2 refers to mounted coupling.
**) Male short conical thread.
***) Connects to plastic pipe with thrust screw 53 431.
Incl. reinforcing bush (red) for SDR 17 pipes.
Elbow with FPL
Incl. reinforcing bush (red) for SDR 17 pipes.
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_ESC/Drawings/PRK/With_M/53_406-240_M.gif)
D1xD2 | d | A | L1* | L2* | EAN | Article No |
32x22 | G1 1/4 | M28x1,5 | 69 | 61 | 7318793885807 | 53 406-232 |
40x28 | G1 1/2 | M34x1,5 | 82 | 66 | 7318793857804 | 53 406-240 |
Male elbow
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_ESC/Drawings/PRK/With_M/53_406-116_M.gif)
DxA** | d | L1* | L2* | EAN | Article No |
16xR1/2 | G1/2 | 47 | 30 | 7318792889905 | 53 406-116 |
20xR3/4 | G3/4 | 53 | 35 | 7318792890000 | 53 406-120 |
25xR1 | G1 | 60 | 40 | 7318792890109 | 53 406-125 |
32xR1 1/4 | G1 1/4 | 73 | 48 | 7318792889509 | 53 406-032 |
40xR1 1/2 | G1 1/2 | 82 | 50 | 7318792889608 | 53 406-040 |
50xR2 | G2 | 96 | 60 | 7318792889707 | 53 406-050 |
Female tee
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_ESC/Drawings/PRK/With_M/53_415-116_M.gif)
D1xA***xD3 | d | L1* | L2 | EAN | Article No |
25 x G1 | G1 | 119 | 47 | 7318792899805 | 53 415-125 |
32 x G1 1/4 | G1 1/4 | 146 | 55 | 7318792898600 | 53 415-032 |
40 x G1 1/2 | G1 1/2 | 162 | 61 | 7318792898709 | 53 415-040 |
50 x G2 | G2 | 190 | 73 | 7318792899003 | 53 415-050 |
63 x G2 1/2 | G2 1/2 | 230 | 85 | 7318792899102 | 53 415-063 |
When dimensions 1 and 3 are the same, only 1 is given.
*) L1, L2 refers to mounted coupling.
***) Connects to plastic pipe with thrust screw 53 431.
Tee
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_ESC/Drawings/PRK/With_M/53_410-116_M.gif)
D1xD2xD3 | d1xd2xd3 | L1* | L2* | EAN | Article No |
16 | G1/2 | 94 | 47 | 7318792896804 | 53 410-116 |
20 | G3/4 | 105 | 53 | 7318792897108 | 53 410-120 |
25 | G1 | 119 | 60 | 7318792897306 | 53 410-125 |
32 | G1 1/4 | 146 | 73 | 7318792891007 | 53 410-032 |
40 | G1 1/2 | 162 | 82 | 7318792891403 | 53 410-040 |
40 x 32 1) | G1 1/2 x G1 1/4 | 162 | 80 | 7318792893001 | 53 410-062 |
50 | G2 | 190 | 96 | 7318792892202 | 53 410-050 |
50 x 40 1) | G2 x G1 1/2 | 190 | 95 | 7318792894503 | 53 410-079 |
63 | G2 1/2 | 230 | 115 | 7318792893100 | 53 410-063 |
63 x 40 1) | G2 1/2 x G1 1/2 | 200 | 94 | 7318792895708 | 53 410-093 |
1) Reducing Tee
When dimensions 1 and 3 are the same, only 1 is given.
Sliding straight coupling
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_ESC/Drawings/PRK/With_M/53_423-032_M.gif)
D | d | L* | EAN | Article No |
32 | G1 1/4 | 170 | 7318792901904 | 53 423-032 |
40 | G1 1/2 | 179 | 7318792902000 | 53 423-040 |
50 | G2 | 193 | 7318792902109 | 53 423-050 |
63 | G2 1/2 | 230 | 7318792902208 | 53 423-063 |
*) L refers to mounted coupling.
NOTE: Must be used on SDR 11 pipes.
Reinforcing bush (blue)
NOTE: Must be used on SDR 11 pipes.
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_ESC/Drawings/PRK/With_M/53_420-316_M.gif)
Dy | D | L | EAN | Article No |
20 | 14,8 | 30 | 7318792901409 | 53 420-320 |
25 | 19,8 | 32 | 7318792901508 | 53 420-325 |
32 | 25,2 | 37 | 7318792901607 | 53 420-332 |
40 | 31,4 | 38 | 7318792901706 | 53 420-340 |
50 | 39,6 | 45 | 7318792901805 | 53 420-350 |
Installation wrench
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_ESC/Drawings/PRK/With_M/53_499-032_M.gif)
Dim | L | EAN | Article No |
20 - 25 | 224 | 7318793797308 | 53 499-020 |
32 - 40 | 280 | 7318792913402 | 53 499-032 |
50 - 63 | 380 | 7318792913501 | 53 499-050 |
Male two step reducer with thrust screw
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_ESC/Drawings/PRK/With_M/53_427-016_M.gif)
A | D | d | EAN | Article No |
G1 | 16 | G1/2 | 7318792904608 | 53 427-016 |
G1 1/4 | 20 | G3/4 | 7318792904707 | 53 427-020 |
G1 1/2 | 25 | G1 | 7318792904806 | 53 427-025 |
G2 | 32 | G1 1/4 | 7318792904905 | 53 427-032 |
G2 1/2 | 40 | G1 1/2 | 7318792905001 | 53 427-040 |
****) O-ring sealing
AMETAL®
Thrust screw and cone for PVC pipe
AMETAL®
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_ESC/Drawings/PRK/With_M/53_431-632_M.gif)
D | d | EAN | Article No |
32 | G1 1/4 | 7318792906305 | 53 431-632 |
Male reducer with thrust screw
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_ESC/Drawings/PRK/With_M/53_426-016_M.gif)
A | D | d | EAN | Article No |
G3/4 | 16 | G1/2 | 7318792904004 | 53 426-016 |
G1 | 20 | G3/4 | 7318792904103 | 53 426-020 |
G1 1/4 | 25 | G1 | 7318792904202 | 53 426-025 |
G1 1/2 | 32 | G1 1/4 | 7318792904301 | 53 426-032 |
G2 | 40 | G1 1/2 | 7318792904400 | 53 426-040 |
G2 1/2 | 50 | G2 | 7318792904509 | 53 426-050 |
****) O-ring sealing
Reducer, male x female
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_ESC/Drawings/PRK/With_M/53_425-016_M.gif)
A | A1 | EAN | Article No |
G3/4 | G1/2 | 7318792902604 | 53 425-016 |
G1 | G3/4 | 7318792902703 | 53 425-020 |
G1 1/4 | G1 | 7318792902802 | 53 425-025 |
G1 1/2 | G1 1/4 | 7318792902901 | 53 425-032 |
G2 | G1 1/2 | 7318792903007 | 53 425-040 |
G2 1/2 | G2 | 7318792903106 | 53 425-050 |
****) O-ring sealing
NOTE: Must be used on SDR 17 pipes.
Reinforcing bush (red)
NOTE: Must be used on SDR 17 pipes.
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_ESC/Drawings/PRK/With_M/53_420-025_M.gif)
Dy | D | L | EAN | Article No |
32 | 27,2 | 37 | 7318792900907 | 53 420-032 |
40 | 34,2 | 38 | 7318792901003 | 53 420-040 |
50 | 43,0 | 45 | 7318792901102 | 53 420-050 |
63 | 54,2 | 50 | 7318792901201 | 53 420-063 |
Acetal plastic
Thrust screw for PE pipe
Acetal plastic
![](https://assets.imi-hydronic.com/Pictures/Image_Gallery_ESC/Drawings/PRK/With_M/53_431-016_-063_M.gif)
D | d | EAN | Article No | |
16 | G1/2 | 7318792905209 | 53 431-016 | |
20 | G3/4 | 7318792905308 | 53 431-020 | |
25 | G1 | 7318792905407 | 53 431-025 | |
32 | G1 1/4 | 7318792905506 | 53 431-032 | |
40 | G1 1/2 | 7318792905605 | 53 431-040 | |
50 | G2 | 7318792905704 | 53 431-050 | |
AMETAL® | ||||
63 | G2 1/2 | 7318792905803 | 53 431-063 |
Photos
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