RPG Series Rising Plug Valves (With Gauge Port)

RPG Series Rising Plug Valves (With Gauge Port)

Rising plug valves are a type of valve that uses a plug to control the flow of fluid. The plug is rotated to open or close the valve, and it rises and falls as it is rotated. This type of valve is often used in on/off applications, but it can also be used for throttling applications.

Rising plug valves have a number of advantages over other types of valves. They are relatively simple in design, which makes them easy to operate and maintain. They are also very durable and can withstand high pressures and temperatures. Additionally, rising plug valves are available in a wide range of materials, so they can be used in a variety of applications.

Here are some of the key features and benefits of rising plug valves:

• Simple design: Rising plug valves are relatively simple in design, which makes them easy to operate and maintain.
• Durable: Rising plug valves are very durable and can withstand high pressures and temperatures.
• Variety of materials: Rising plug valves are available in a wide range of materials, so they can be used in a variety of applications.
• Tight shutoff: Rising plug valves can provide a very tight shutoff, making them ideal for applications where leakage is not acceptable.
• Low operating torque: Rising plug valves require relatively low operating torque, which makes them easy to operate manually.

RPG Series Rising Plug Valve Features:

• Nonrotating stem for longer seat life.
• Roddable, straight-through flow path for maximum flow with minimum pressure drop.
• Stem thread lubricant isolated from system media.
• Replaceable seat and stem tip design.
• Stem thread is protected from outside contamination by the PTFE ring in the gland.
• Panel mounting is available as an option.
• Handle color options are available.
• Leak-tight performance testing for every valve with nitrogen at the maximum working pressure.
• Maximum working pressure: Stainless steel: 6000 psig (414 bar）
• Working temperature:
  Acetal:-20°F to 250°F（-28°C to 121°C）
  PEEK:-20°F to 400°F（-28°℃ to 204°C）
  PFA:-20°F to 400°F（-28°C to 204°C）

RPG Series Rising Plug Valve Standard Materials of Construction:

Item

Component

Valve Body Material

316 SS

304 SS

321 SS

Alloy R-405

1

Handle

Anodized aluminum or stainless steel or black knob

2

Set Screw

stainless steel

3

Wiper Ring

PTFE/D1710

4

Upper Stem

316 SS/A276

304 SS/A276

321 SS/A276

Alloy R-405/B164

5

Panel Nut

17-4PH

6

Bonnet

316 SS/A479

304 SS/A479

321 SS/A479

Alloy R-405/B164

7

Backup Ring

PTFE/D1710

8

O-ring

Fluorocarbon FKM

Buna-N

Ethylene propylene

9

Lock Nut

17-4PH

10

Stem Tip

316 SS/A276

304 SS/A276

321 SS/A276

Alloy R-405/B164

11

Seat

Acetal or PEEK or PFA

12

Body

316 SS/A479

304 SS/A479

321 SS/A479

Alloy R-405/B164

RPG Series Rising Plug Valve Dimensions:

Basic Ordering Number	Connection Type and Size		Orifice in(mm)	Cv	Dimension, in.(mm)
	Inlet	Outlet			L1	L2	C	D	E	F		H
-RPG-FN4-4	1/4” Female NPT	1/4” Female NPT	0.16 (4.0)	0.63	1.12 (28.4)	1.75 (44.4)	0.50 (12.7)	2.17 (55.0)	1.08 (27.5)	0.25 (6.4)	0.65 (16.0)	3.77 (95.8)
-RPG-MN8-FN4-4	1/2” Male NPT	1/4” Female NPT	0.16 (4.0)	0.63	1.89 (48.0)	1.75 (44.4)	0.50 (12.7)	2.17 (55.0)	1.08 (27.5)	0.25 (6.4)	0.65 (16.0)	3.77 (95.8)
-RPG-FN8-6	1/2” Female NPT	1/2” Female NPT	0.25 (6.4)	1.80	1.33 (33.8)	2.25 (57.2)	0.56 (14.3)	2.50 (63.5)	1.40 (35.5)	0.38 (9.7)	0.77 (19.6)	3.83 (97.3)
-RPG-MN12-FN8-6	3/4” Male NPT	1/2” Female NPT	0.25 (6.4)	1.80	2.16 (55.0)	2.25 (57.2)	0.56 (14.3)	2.50 (63.5)	1.40 (35.5)	0.38 (9.7)	0.77 (19.6)	3.83 (97.3)

How Does the Rising Plug Valve Work?

A rising plug valve is a type of needle valve that uses a rotating plug to control the flow of fluid through it. The plug is attached to a stem that rises as the valve is opened. This allows the operator to see the position of the valve stem and to verify that it is fully open or closed.

Rising plug valves are typically used for on-off service, but they can also be used for throttling applications. They are available in a variety of materials and sizes and can be used for a wide range of fluids, including water, air, gas, and oil.

Here is a step-by-step explanation of how a rising plug valve works:

1. The valve is closed when the plug is aligned with the valve body, blocking the flow of fluid.
2. To open the valve, the operator rotates the valve stem, which causes the plug to rotate.
3. When the plug is rotated 90 degrees, it is aligned with the ports in the valve body, allowing fluid to flow through the valve.
4. To close the valve, the operator rotates the valve stem in the opposite direction, which causes the plug to return to its closed position.

Rising plug valves are known for their reliability and durability. They are also relatively easy to operate and maintain. Rising plug valves are used in a variety of industries, including:

• Oil and gas
• Chemical processing
• Power generation
• Water and wastewater treatment
• Food and beverage processing
• Pharmaceutical manufacturing

If you are looking for a reliable and durable valve for on-off or throttling applications, a rising plug valve may be a good option for you.

Rising Plug Valve Installation and Maintenance:

Rising Plug Valve Installation

1. Select the correct valve for the application. Consider the fluid type, pressure, temperature, and flow requirements.
2. Prepare the piping. Ensure that the piping is clean and free of debris. Remove any burrs or sharp edges from the pipe ends.
3. Install the valve in the correct direction. The valve should be installed with the flow direction arrow pointing in the direction of flow.
4. Tighten the pipe connections. Use the appropriate wrench or torque wrench to tighten the pipe connections to the valve. Be careful not to overtighten the connections, as this could damage the valve.
5. Install the valve actuator. If the valve is equipped with an actuator, install it according to the manufacturer's instructions.
6. Test the valve. Once the valve is installed, test it to ensure that it is operating properly. Open and close the valve several times and check for leaks.

Rising Plug Valve Maintenance

Rising plug valves are relatively low-maintenance valves. However, it is important to inspect and maintain the valve on a regular basis to ensure proper operation and prevent leaks.

Inspection

• Inspect the valve body for any cracks or signs of wear.
• Inspect the valve stem for any signs of bending or corrosion.
• Inspect the valve plug and seats for any signs of wear or damage.
• Inspect the valve packing for any signs of wear or damage.

Maintenance

• Lubricate the valve stem and pack according to the manufacturer's instructions.
• Replace the valve packing if it is worn or damaged.
• Replace the valve plug and seats if they are worn or damaged.
• Tighten the pipe connections if they are loose.

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