●
Overview & Basic Info
NRGV Model Non-rising Stem Resilient Seated Gate Valve is a soft seal disc which is fully encapsulated with rubber. The valve is designed with new technology for light operating, no clogging and no corrosion, good resilient memory & long service life. It can be used extensively in all kinds of water supply & sewage, fire-fighting and function as a shut-off or regulating valve.
Material
Cast Iron / Ductile Iron
Connection
Flange, Socket or Grooved
Pressure
PN10 / PN16 / PN25
Actuator
Manual (Cap Nut/Handwheel/Gearbox/Actuator)
Size Range
1.5"-48" (DN50-DN1200)
Standard
DIN3352, BS5163, AWWA C502, AS2638.2
Coating
Epoxy Coated 250 Microns
Usage
Drain, Flow Control, Water Industrial
●
Technical Specification
| Parameter |
Details |
| Size range | DN50-DN1200 |
| Pressure range | PN10-16-25 |
| Temperature | -10ºC to +80ºC |
| Design Standard | EN 1171 / EN 1074 |
| Face to Face | DIN 3202 F4/F5, BS5163 |
| Flange Drilling | EN 1092-2 / ISO 7005-2 |
| Coating | Thermoplastic Powder Epoxy (RAL 5005/5010/5015) |
| Testing | EN 12266-1 |
| Marking | EN 19 |
●
Application & Operation
Applications:
Potable water, Waste water, Water treatment, Food and chemical enterprises, HVAC, Power plants.
Operations:
Handwheel, Bare shaft, Operation cap, ISO top flange, Gearbox, Electrical and Pneumatic actuators.
Frequently Asked Questions
Q1: What is the primary material used for the NRGV gate valve?
A: The body and cover are made of high-grade Ductile Iron, while the wedge is Ductile Iron encapsulated with EPDM rubber.
Q2: What are the available pressure ratings for this valve?
A: The valve is available in PN10, PN16, and PN25 pressure ratings.
Q3: Can the O-rings be replaced while the valve is in service?
A: Yes, the 3 O-ring stem seals are designed to allow replacement without disassembling the valve from the mainline pipes.
Q4: What is the maximum operating temperature?
A: The valve is suitable for temperatures ranging from -10ºC up to +80ºC.
Q5: Which design standards does the valve comply with?
A: It complies with several international standards including DIN3352, BS5163, EN 1171, and AWWA C502.
Q6: What type of coating is applied to the valve?
A: Both the interior and exterior are coated with Thermoplastic Powder Epoxy (minimum 250 microns) for excellent corrosion resistance.
Maria Valve
