excellent corrosion protection and reliable sealing capability. per request, the gate valves can be actuated by operating lever,hand wheel electrical actuator and so on.

Face to face: BS, EN, DIN and SABS etc.
Working Temperature: 0- 100ºC
Working pressure: PN10 / PN16
Item | Part Name | Material | Item | Part Name | Material |
1 | Body | GGG50 | 5 | Bonnet | GGG50 |
2 | Disc | GGG50 with NBR/SBR | 6 | O-ring | EPDM |
3 | Nut | ZCuZn38Mn2Pb2 | 7 | Cap | GGG50 |
4 | Stem | Stainless Steel/2Cr13 |
DN MM | 50/63 | 65/75 | 80/90 | 100/110 | 150/160 | 200/225 | 250/250 | 300/315 |
L | 258 | 278 | 288 | 362 | 415 | 458 | 508 | 510 |
L1 | 123 | 123 | 123 | 127 | 130 | 133 | 158 | 158 |
D | 63 | 75 | 90 | 110 | 160 | 200/225 | 250 | 315 |
H | 250 | 286 | 335 | 371 | 468 | 572 | 658 | 758 |
For other sizes not mentioned above, please contact us. We have right to change the data without further notice. |

* Compact design
* One-piece bonnet
* Non-rising stem
* "O"ring design for stem back sealing leads to maintenance free
Excellent Corrosion Protection:
* Inside epoxy resin coating or vitreous enamel(upon request)
* Outside epoxy resin coating
* Socket head cap bolts,sealed with glue on the top
Reliable Health Nature:
* Epoxy resin coating complies with the WARS certification
* Wedge bonded with rubber for the health inspection.
* Trims are made of stainless steel or bronze
Scope Of Application:
* Potable water supply
* Industrial fields

Vehicles must be suitable for the transport, loading and uploading of ductile iron pipes and fittings. Apply the following basic rules:
-Prevent any contact between the valve elements and metal surfaces (to avoid damaging the coatings).
-Make sure that the valves can be loaded and unloaded in complete safety.
-Make sure that the load is secure during transport.
-Always use vehicles or trailers with sufficiently large stanchions fitted on each side of the floor to stabilize the load.
-Lash the load with textile straps and lever tensioners.
Quality Control
SYI Pipeline regards quality as an essential and integral part of our business success. Until now, we are ISO9001:2015 TUV, BSI Kitemarked, SGS, BV, FM certified, and UL, WRAS listed. We are the approved supplier to many worldwide known countries and authorities. Manufacturing "SYI" Brand products has evolved as a mark of quality!

Services
SYI manufactures and designs complete series of Valves according to DIN/BS/EN/API/ANSI/AWWA/ASME/ Russian and other major standards.
-Gate Valves,
-Butterfly Valves,
-Check Valves,
-Y-Strainers
-Air Release Valves
-Globe Valves
-Fire Hydrant
The Valves supplied by SYI Pipelines are mainly used for adjusting water, steam, oil, gas, and natural gas in chemical industries, acid, alkali, and salt working pipelines. Sizes from 50-2000mm can meet full requirements from customers.


-10,000 m2 of the pattern, sand mixing, polishing, machining, hydraulic pressure, coating, packaging workshops;
-4,000 m2 of three green sand moulding workshops and one resin sand moulding workshops;
-3,000 m2 of automatic moulding machine line and epoxy coating line
-professional laboratory
-machining shop
-and our own tooling shop
Strict process and operating regulations together with perfect quality assurance system making every production step under control. All the products are subject to tests and inspections including composition analysis, metallographic examination, dimension & surface finish inspection, ring test, tensile test, hardness test, hydrostatic test, lining and coating test to be sure that the products meet the requirements of the standards.
Since 2009, SYI Pipeline has developed from a pipes & fittings seller to a professional project solution provider, including the one stop service and solution from pipes, fittings, couplings & flanged adaptors, valves, fire hydrants, to water meters and accessories.
SYI products have served 116 countries worldwide up to now!
Most of these customers cooperated with SYI for more than 20 years!
We value long term cooperation relationship mostly!

A dedicated Customer Service team with 50 staff covering Marketing, Sales, Technical, Production, Inspection, Logistics and Management.
80% have over 5 years working experiences.
100% of our sales can communicate in English fluently.
Free catalogues, certificates.
Individual QCP.
MTC with pictures and videos.
Free Extra Accessories and Repair Tools.
1 specialized Customer Service Staff to follow your each single project.
Professional Logistic Services.
Free Installation Instruction, Product Standards and Inspection Certificates.
One-stop Service
1. Sales Service
40 staff covering the pre-sales, on-sales, after-sales services.
80% have over 5 years working experiences.
100% of our sales can communicate in English fluently.
We promise to respond your questions within 24 hours.
2. Customer Service
For your every single PO, we have 1 Customer Service person to independently follow up.
Professional Logistic Department
Product Installation Instructions are available.

