AWWA C515 NRS Resilient Seated Gate Valve,Threaded Ends

Threaded gate valve is a type of valve that uses a threaded connection for attachment to pipes, allowing for a secure and reliable means of controlling the flow of liquids.

Feature

● Design Standard AWWA C515

● Threaded ends standard: ANSI B1.20.1

● (Other Thread Types available upon request)

● Triple O-Rings stem seal

● Lifting lugs built into stuffing gland

● Fusion Bonded Epoxy Coating to AWWA C550 Standard

● Inspection & testing: AWWA C515

● Working Pressure: 250PSL

● Working Temperature: -20℃ To 100℃(-4°F to 212°F)

● Operator: Hand wheel , 2″Operating Nut,Gearbox

Drawing

Inch	L	M(NPT)	H	Q	W	V
1.5	6.5	1.5”	9.05	0.94	6.3	1.57
2"	7.24	2''	9.84	0.79	7.08	1.97
2.5"	7.48	2.5''	10.39	1.14	7.08	2.56
3"	7.99	3''	11.22	1.22	7.87	3.15
4"	9.01	4''	14.17	1.3	9.84	3.94
6"	10.51	6''	17.28	1.51	9.84	5.9

Feature

Threaded Connection
_

● Internal and External Threads:
The valve ends are equipped with threads (usually NPT – National Pipe Thread or BSP – British Standard Pipe) that screw into corresponding threaded pipes or fittings.

● Secure Fit:
The threaded connection ensures a tight and leak-proof fit, suitable for high-pressure applications.

Gate Valve Design
_

● Gate or Wedge:
Utilizes a gate or wedge that moves up and down to open or close the valve, controlling fluid flow. When the gate is lifted, the flow path is open; when lowered, the path is blocked.

● Body:
Typically made from durable materials such as brass, stainless steel, cast iron, or other corrosion-resistant materials.

Operation
_

● Manual or Automated:
Operated manually with a handwheel or lever, or can be equipped with actuators for automated control.

● Linear Motion:
The gate moves in a linear direction, providing a straightforward method for isolating flow.

Advantage and Disadvantage

Advantages

STRONG AND RELIABLE CONNECTION

Threaded connections provide a strong and reliable seal that can handle high pressures and temperatures.

EASY INSTALLATION

Threaded gate valves are relatively easy to install and do not require welding or specialized tools, making them suitable for various applications.

VERSATILITY

Available in a variety of sizes and materials, making them suitable for many different fluids and applications.

COST-EFFECTIVE

Generally more cost-effective than flanged or welded connections, especially in smaller pipe sizes.

Disadvantages

Potential for Leakage
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If not properly tightened or sealed with appropriate thread sealant (like PTFE tape), threaded connections can be prone to leakage.

Difficult to Disassemble
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Threaded joints can be difficult to disassemble, especially after long periods of use where threads may corrode or become seized.

Application

Residential and Commercial Plumbing

● Reason:
Commonly used in water supply lines, heating systems, and general plumbing applications due to their ease of installation and secure connections.

Industrial Systems

● Reason:
Suitable for industrial applications involving water, oil, gas, and other fluids where a reliable shut-off is necessary. Threaded gate valves are used in systems where frequent disassembly is not required.

Oil and Gas Industry

● Reason:
Often used in pipelines and distribution systems for oil and gas due to their ability to handle high pressures and corrosive environments.

Irrigation Systems

● Reason:
Employed in agricultural and landscape irrigation systems for controlling water flow to different zones.

Installation Steps

01

● Preparation:
Ensure that both the valve and the pipe threads are clean and free from debris. Apply a suitable thread sealant (such as PTFE tape) to the male threads of the pipe.

02

● Threading:
Screw the valve onto the threaded pipe by hand until it is hand-tight. Ensure the threads are properly engaged to avoid cross-threading.

03

● Tightening:
Use a pipe wrench or appropriate tool to further tighten the connection. Be careful not to over-tighten, as this can damage the threads or the valve body.

04

● Testing:
Once installed, turn on the fluid supply and check for leaks around the threaded connections. If leaks are detected, tighten the connection further or reapply thread sealant as needed.