Design Features:
1、 Ductile Iron body and bonnet for high strength and impact resistance . Valve Body and Bonnet Fusion bonded epoxy coating for long life corrosion protection. Straight through full bore to avoid debris traps, small flow resistance.
2、 Ductile Iron Wedge inside and outside fully rubberized with vulcanized EPDM or NBR ,suitable for potable water.
3、 Rubber bonnet gasket for longevity and protection of bonnet bolts, Isolated fasteners for corrosion protection.
4、 Stainless steel stem with rolling thread for high strength and corrosion resistance**.
5、 Back sealing facility to allow for replacement of seals under full operating pressure.
6、 Lower thrust washer to reduce friction.
7、 Ductile Iron Gland Thick Wall Casting, replaceable O rings.
8、 Dust Guard to prevent impurities from entering the stem sealing system.
9、 Brass bushing for alignment, low torque operation.
10、 Stem nut assembled downward.
11、Valve is supplied with hand wheel or bare shaft with square cap; Small operation torque, easy opening and closing.
Field of Application：
Size Range: DN40 and DN600
Maximum Temperature: 80˚C
Allowable Operating Pressure:PN10、PN16、PN25
Gate valve for use in irrigation, general utility services, HVAC and water systems
Features：
Outside stem and yoke (OS&Y)
Stem Seal with O-ring
Bolt bonnet, Full bore
Rubber encapsulated wedge, Brass Wedge Nut.
Fusion bonded epoxy coated inside and outside , blue RAL 5017 200 Micron thick
Working pressure 250 PSI/17.2 Bar Non-Shock Cold
Technical Specification：
Valve design according to DIN 3352 / SABS 664
Face to face dimensions according to DIN 3202 F5/ SABS 664
Socket Ends dimensions comply ISO 4422、ISO 4422.2
Hydraulic test according to ISO5208
MATERIAL LIST
| Item No. | Part Name | Specification |
| 1 | Body | Ductile Iron EN- GJS- 500- 7 |
| 2 | Wedge | Ductile Iron EN- GJS- 500- 7 |
| 3 | Wedge Coating | NBR /EPDM EN 681-1 |
| 4 | Wedge Nut | Copper Alloy |
| 5 | Stem | Stainless Steel X20 Cr13 |
| 6 | Bonnet Gasket | NBR /EPDM EN 681-1 |
| 7 | Bonnet | Ductile Iron EN- GJS- 500- 7 |
| 8 | O Ring Back Sealing | EPDM/NBR |
| 9 | Stem Collar | Stainless Steel / Copper Alloy |
| 10 | O-Ring | EPDM/NBR |
| 11 | O-Ring | EPDM/NBR |
| 12 | Stuffing Nut | Copper Alloy |
| 13 | Dust Guard | EPDM/NBR |
| 14 | HandWheel | Ductile Iron EN- GJS- 500- 7 |
| 15 | Stem Cap | Ductile Iron EN- GJS- 500- 7 |
