EURO 20 Type 24 for PVC pipes
The Euro 20 gate valves are equipped with gates fully rubber encapsulated from DN40 to 400 and must be used only in full opening or closing position up to a pressure of 25 bar. They are designed for use on water supply and distribution mains, irrigation systems, fire fighting system and general systems in industrial sites. They can cut the water flow in a pipe and therefore facilitate the network maintenance.
Main characteristics are:
- Compliance with ISO & NF standards (DN40-300), in particular, possibility to replace the bush seals under full working pressure, valve totally opened ;
- Coating and materials neutrality concerning drinking water ;
- Full bore to nominal diameter (except DN350) ;
- Corrosion resistance secured by the material and epoxy coating choice ;
- No current maintenance needed ;
- The operating torque is much lower than required by the standards ;
- Easy to maintain.
Technical design
| 50 | 63 | 250 | 110 | 70 | 94 | 222 | 272 | 95 x 144 | 15.2 | 14.3 | Anti-Clockwise | Cap | 12,5 | 7.45 | REL63CDCH |
| 50 | 63 | 250 | 110 | 70 | 94 | 222 | 272 | 95 x 144 | 15.2 | 14.3 | Clockwise | Bare shaft | 12,5 | 7.45 | REL63CBXH |
Features
Material and coating
| Item | Designation | Material | Coating |
|---|---|---|---|
| 1 | Body | Ductile Iron GS EN GJS 400-15 or 500-7 | Blue Epoxy mini 250 microns |
| 2 | Bonnet | Ductile Iron GS EN GJS 400-15 or 500-7 | Blue Epoxy mini 250 microns |
| 3 | Gate | Ductile iron acc. EN1563 and EN681-1 | EPDM on ductile iron and polyamide brackets |
| 4 | Yoke | Ductile iron GS | EVA (Ethylene Vinyl Acetate) 250 microns mini |
| 5 | Stem bearing nut | Ductile Iron GS EN GJS 400-15 or 500-7 | EVA (Ethylene Vinyl Acetate) 250 microns mini |
| 6 | Screw | Stainless steel type X20Cr13 per EN10088-3 | |
| 7 | Operating nut | Brass type CuZn39Pb2 or CuZN40Pb2 per EN12164 | |
| 8 | Bush | Brass type CuZn39Pb2 or CuZN40Pb2 per EN12164 | |
| 9 | Seal joint | Polyamide type PA 6-6 | |
| 10 | Lock washer | Stainless steel type Z6 CN18.8 | |
| 11 | Bonnet-body gasket | EPDM Elastomer acc. to EN681-1 | |
| 12 | Bonnet-yoke gasket | Nitrile | |
| 13 | Dust seal | Chloroprene | |
| 14 | Label (reference, manufacturing date, etc...) | - | |
| 15 | Stem seal | Nitrile Elastomer NBR WRC 70 | |
| Thrust washer | Polyamide type PA 6-6 |
Compliance with Standards
Product :
- EN 1074-2
Tests in factory :
- EN 12266-1
Face to face dimensions:
- EN 558-2 ISO 5752 serie 15 for type 21
- EN 558-2 ISO 5752 serie 14 for type 23
Flange drilling:
- EN 1092-2
- ISO 7005-2
- DIN 2501
The materials of the components and the epoxy coating satisfy the French and European standards in matter of potable water.
Marking
The marking of valves manufactured by SAINT-GOBAIN complies with international standards EN 1074-2 and EN19.
Markings are either cast markings, or markings on plates firmly attached on the valve body, or printed markings, in accordance with the specifications of standard EN19.
| EN19 Specifications | Process Saint-Gobain (valves) | ||
|---|---|---|---|
| Table 1 - Markings | Standards | ||
| 1 | DN | EN 19 § 4.2.1 Mandatory indications Casting or on a plate |
Casting |
| 2 | PN | Casting | |
| 3 | Material | Casting | |
| 4 | Name or brand of the manufacturer | Plate | |
| 11 | Standard | EN 19 § 4.3 Additional markings Items 7 to 21 in Table 1 are optional |
Casting |
| 12 | Identification of ductile iron | Casting | |
| 16 | Quality test | Printed ont he body | |
| 18 | Manufacturing date | Plate | |
| 21 | Closing direction | Plate + sticker on the body | |
Installation
The gate-valves EURO 20 can be installed as follows:
- On surface
- Buried:
- under direct backfill (with ground correctly compacted) and placed under surface boxes
- located in chambers under valve boxes.
The gate-valves can have four positions:
- on horizontal pipe main:
- standing (each time it is possible)
- overturned (to avoid for sizes superior to 300)
- laid down.
- on vertical pipe main:
- in a horizontal position.
The gate-valve EURO 20 exists under several types, the most common is the EURO 21 with flanges long pattern.
For this type of valve, it’s better to use:
- Ultra QUICK, for alying on all type of material
- QUICK GS anchored or not for laying on ductile iron pipes
- QUICK PVC anchored or not for laying on PVC pipes
- Quick PE fus
- and a dismantling joint (PO, PA) to facilitate the laying of the device.
Maintenance
The gate-valves EURO 20 need no particular maintenance.
The replacing of tightness joint of the operating screw support can be made, the valve under pressure, by loosening the operating bolt when the position is fully open.
