Product Overview
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Self-adjustable diameter fitting for single and multilayer plastic pipe 680 series
Function
The self-adjustable fitting for single and multilayer plastic pipes is a mechanical device that allows safe and easy connection
of the radiant panel system pipes to the relevant manifolds.
Due to the specific requirements of this type of system, it has been designed to meet the need of having a versatile fitting,
capable of adjusting to different pipe diameters.
Patented
Technical specifications
Materials
Nut: brass EN 12164 CW614N
Adapter: brass EN 12164 CW614N
Seals: EPDM
Dielectric seal ring: EPDM
Olive: PA 66 G50
Performance
Medium: water, glycol solutions
Max. percentage of glycol: 30%
Max. working pressure: 10 bar
Working temperature range: 5–80°C
(PE-X)
5–75°C (Multilayer marked 95°C).
Characteristic components
1) Adapter
2) Olive
3) Nut
Product range
6805 series Self-adjustable fitting for single and multi-layer plastic pipes size 3/4”
Construction details
Pipe-to-fitting coupling flexibility
This fitting is specifically designed in order to adjust to several pipe diameters.
The great variety of single and multilayer plastic pipes on the market, and the range of permissible
tolerances, have made it necessary to design an innovative method for coupling the fittings with mechanical
tightening. Keeping the nominal dimensions of the fittings currently on the market, the new construction
solution makes it possible to use the same fitting for pipes with external diameter differences of up to 2 mm
and internal diameter differences of up to 0,5 mm.
Pull-out resistance
This fitting offers high resistance to pipe pull-out. Its special tightening system makes it suitable for all
applications, ensuring a perfect hydraulic seal.
Low head losses
The internal profile of the adapter (4) is shaped to obtain a Venturi effect as the medium flows.
It allows head loss reduction of about 20% in relation to the passages of the same diameter.
Dielectric seal ring
The fitting is equipped with a rubber insulating element (5) to prevent contact between the aluminium of the multi-layer pipe and the brass of
the fitting. This prevents any galvanic corrosion generated by the two different metals coming into contact.
Double O-Ring seal
On the adapter there are two EPDM O-Ring seals (6) - (7) in order to avoid potential losses even at high working pressures.
680 series
Self-adjusting diameter fitting for single and multilayer plastic pipes with internal profile offering a Venturi effect to limit head
losses. Size 3/4” F. Brass nut and adapter, EPDM seals, EPDM dielectric ring, PA olive. Medium water and glycol solutions.
Maximum percentage of glycol 30%. Maximum working pressure 10 bar. Working temperature range
5–80°C (PE-X)
;
5–75°C
(Multi-layer marked 95°C).
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5
6
7
SPECIFICATION SUMMARY
680507
680502
680503
680500
680501
680506
680515
680517
680524
680526
680535
680537
680544
680546
680555
680556
680564
680505
3/4”
3/4”
3/4”
3/4”
3/4”
3/4”
3/4”
3/4”
3/4”
3/4”
3/4”
3/4”
3/4”
3/4”
3/4”
3/4”
3/4”
3/4”
7,5–18
7,5–18
,8,5–19,
19,0–19,5
19,5–10,0
19,5–10,0
10,5-11,0
10,5–11,0
11,5–12,0
11,5–12,0
12,5–13,0
12,5–13,0
13,5–14,0
13,5–14,0
14,5–15,0
15,5–15,5
15,5–16,0
17
10,5–12
12,5–14
12,5–14
14,5–16
12,5–14
14,5–16
14,5–16
16,5–18
14,5–16
16,5–18
16,5–18
18,5–20
16,5–18
18,5–20
18,5–20
18,5–20
18,5–20
22,50
Code
Ø
inner
Ø
outer