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BNH Series Integral Bonnet Needle Valves

BNH Series Integral Bonnet Needle Valves

Integral bonnet needle valves are a type of control valve commonly used in various industries to regulate and control the flow of fluids. These valves feature a compact design that integrates the bonnet and the body into a single unit, providing a robust and reliable solution for fluid control applications. The primary purpose of integral bonnet needle valves is to precisely control the flow rate of fluids, especially in situations where a high level of accuracy is required. They are often used in systems that handle high-pressure or high-temperature fluids, such as in oil and gas, chemical processing, power generation, and other industrial applications.

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BNH Series Integral Bonnet Needle Valves

Integral bonnet needle valves are a type of control valve commonly used in various industries to regulate and control the flow of fluids. These valves feature a compact design that integrates the bonnet and the body into a single unit, providing a robust and reliable solution for fluid control applications.

The primary purpose of integral bonnet needle valves is to precisely control the flow rate of fluids, especially in situations where a high level of accuracy is required. They are often used in systems that handle high-pressure or high-temperature fluids, such as in oil and gas, chemical processing, power generation, and other industrial applications.

BNH Series Integral Bonnet Needle Valves

BNH Series Integral Bonnet Needle Valve Features:

  • One-piece forged body
  • Easy external adjustments by packing nut.
  • Compact design.
  • Handle color options are available
  • Leak-tight performance testing for every valve with nitrogen at the maximum working pressure.
  • Maximum working pressure: BNH Series-Stainless steel: 5000 psig (345 bar)
  • Working temperature:
    PTFE:-65°F to 450°F（-54°C to 232℃）
    PEEK:-65°F to 500°F（-54Cto 260°℃）

Integral Bonnet Needle Valve Standard Materials of Construction:

BNH Series Integral Bonnet Needle Valve Standard Materials of Construction

Item Component Valve Body Material
316 SS Brass Steel
1 Handle Anodized aluminum or stainless steel or black knob
2 Set Screw Stainless steel
3 Packing Bolt 304 SS/A276 Brass C36000/B16 Alloy 400/B164
4 Washer 316 SS/A276
5 Packing Spring S17700/A693
6 Washer 316 SS/A276
7 Upper Packing PTFE/PEEK
8 Lower Packing
9 Packing Washer 316 SS/A276
10 Panel Nut 17-4PH
11a Stem Chrome-plated 316 SS/A276
11b Stem PCTFE/D1430 PEEK
11c Stem Chrome-plated 316 SS/A276
12 Body 316 SS/A182 Brass C37700/B283 Alloy

BNH Series Integral Bonnet Needle Valve Dimensions:

BNH Series Integral Bonnet Needle 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
-BNH-FN2-3 1/8 Female NPT 1/8 Female NPT 0.12
(3.0)		 0.20 0.81
(21.6)		 0.81
(21.6)		 0.39
(10.0)		 1.38
(35.0)		 0.44
(11.2)		 0.53
(13.5)		 2.50
(63.5)
-BNH-FN4-4 1/4 Female NPT 1/4 Female NPT 0.16
(4.0)		 0.35 1.06
(27.0)		 1.06
(27.0)		 0.50
(12.7)		 1.88
(47.8)		 0.50
(12.7)		 0.78
(19.8)		 2.97
(75.5)
-BNH-FN6-5 3/8 Female NPT 3/8 Female NPT 0.2
(5.1)		 0.56 1.06
(27.0)		 1.06
(27.0)		 0.50
(12.7)		 1.88
(47.8)		 0.50
(12.7)		 0.78
(19.8)		 2.97
(75.5)
-BNH-FN8-6 1/2 Female NPT 1/2 Female NPT 0.25
(6.4)		 0.70 1.50
(38.1)		 1.50
(38.1)		 0.75
(19.1)		 3.00
(76.2)		 0.75
(19.1)		 1.03
(26.2)		 3.91
(93.3)
-BNH-FN12-7 3/4 Female NPT 3/4 Female NPT 0.29
(7.5)		 0.95 1.63
(41.3)		 1.63
(41.3)		 0.75
(19.1)		 3.00
(76.2)		 0.75
(19.1)		 1.03
(26.2)		 3.91
(93.3)
-BNH-MN2-3 1/8 Male NPT 1/8 Male NPT 0.08
(3.0)		 0.20 0.81
(21.6)		 0.81
(21.6)		 0.39
(10.0)		 1.38
(35.0)		 0.44
(11.2)		 0.53
(13.5)		 2.50
(63.5)
-BNH-MN4-4 1/4 Male NPT 1/4 Male NPT 0.16
(4.0)		 0.35 0.98
(25.0)		 0.98
(25.0)		 0.39
(10.0)		 1.38
(35.0)		 0.44
(11.2)		 0.53
(13.5)		 2.50
(63.5)
-BNH-MN6-5 3/8 Male NPT 3/8 Male NPT 0.2
(5.1)		 0.56 1.12
(28.4)		 1.12
(28.4)		 0.50
(12.7)		 1.88
(47.8)		 0.50
(12.7)		 0.78
(19.8)		 2.97
(75.5)
-BNH-MN8-6 1/2 Male NPT 1/2 Male NPT 0.25
(6.4)		 0.70 1.50
(38.1)		 1.50
(38.1)		 0.50
(12.7)		 1.88
(47.8)		 0.50
(12.7)		 0.78
(19.8)		 2.97
(75.5)
-BNH-MN12-7 3/4 Male NPT 3/4 Male NPT 0.29
(7.5)		 0.95 1.63
(41.3)		 1.63
(41.3)		 0.75
(19.1)		 3.00
(76.2)		 0.75
(19.1)		 1.03
(26.2)		 3.91
(93.3)
-BNH-FT2-2 1/8” Tube 1/8” Tube 0.08
(2.0)		 0.09 0.98
(25.0)		 0.98
(25.0)		 0.39
(10.0)		 1.38
(35.0)		 0.44
(11.2)		 0.53
(13.5)		 2.50
(63.5)
-BNH-FT4-4 1/4” Tube 1/4” Tube 0.16
(4.0)		 0.35 1.12
(28.4)		 1.12
(28.4)		 0.39
(10.0)		 1.38
(35.0)		 0.44
(11.2)		 0.53
(13.5)		 2.50
(63.5)
-BNH-FT6-5 3/8” Tube 3/8” Tube 0.20
(5.1)		 0.56 1.29
(32.8)		 1.29
(32.8)		 0.50
(12.7)		 1.88
(47.8)		 0.50
(12.7)		 0.78
(19.8)		 2.97
(75.5)
-BNH-FT8-6 1/2” Tube 1/2” Tube 0.25
(6.4)		 0.70 1.40
(35.6)		 1.40
(35.6)		 0.50
(12.7)		 1.88
(47.8)		 0.50
(12.7)		 0.78
(19.8)		 2.97
(75.5)
-BNH-FT12-7 3/4” Tube 3/4” Tube 0.29
(7.5)		 0.95 1.90
(48.3)		 1.90
(48.3)		 0.75
(19.1)		 3.00
(76.2)		 0.75
(19.1)		 1.03
(26.2)		 3.91
(93.3)
-BNH-MT3-2 3 mm 3 mm 0.08
(2.0)		 0.09 0.98
(25.0)		 0.98
(25.0)		 0.39
(10.0)		 1.38
(35.0)		 0.44
(11.2)		 0.53
(13.5)		 2.50
(63.5)
-BNH-MT6-4 6 mm 6 mm 0.16
(4.0)		 0.35 1.12
(28.4)		 1.12
(28.4)		 0.39
(10.0)		 1.38
(35.0)		 0.44
(11.2)		 0.53
(13.5)		 2.50
(63.5)
-BNH-MT8-4 8 mm 8 mm 0.16
(4.0)		 0.35 1.17
(29.6)		 1.17
(29.6)		 0.39
(10.0)		 1.38
(35.0)		 0.44
(11.2)		 0.53
(13.5)		 2.50
(63.5)
-BNH-MT10-5 10 mm 10 mm 0.20
(5.1)		 0.56 1.29
(32.8)		 1.29
(32.8)		 0.50
(12.7)		 1.88
(47.8)		 0.50
(12.7)		 0.78
(19.8)		 2.97
(75.5)
-BNH-MT12-6 12 mm 12 mm 0.25
(6.4)		 0.70 1.40
(35.6)		 1.40
(35.6)		 0.50
(12.7)		 1.88
(47.8)		 0.50
(12.7)		 0.78
(19.8)		 2.97
(75.5)
-BNH-MT14-6 14 mm 14 mm 0.25
(6.4)		 0.70 1.56
(39.7)		 1.56
(39.7)		 0.50
(12.7)		 1.88
(47.8)		 0.50
(12.7)		 0.78
(19.8)		 2.97
(75.5)
-BNH-MT18-7 18 mm 18 mm 0.29
(7.5)		 0.95 1.75
(44.5)		 1.75
(44.5)		 0.75
(19.1)		 3.00
(76.2)		 0.75
(19.1)		 1.03
(26.2)		 3.91
(93.3)
-BNH-MT20-7 20 mm 20 mm 0.29
(7.5)		 0.95 1.90
(48.3)		 1.90
(48.3)		 0.75
(19.1)		 3.00
(76.2)		 0.75
(19.1)		 1.03
(26.2)		 3.91
(93.3)

BNH 3-Way Series Integral Bonnet Needle Valve Dimensions:

BNH 3-Way Series Integral Bonnet Needle 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
-BNH-FN2-3-3W 1/8 Female NPT 1/8 Female NPT 0.12
(3.0)		 0.20 0.81
(21.6)		 0.81
(21.6)		 0.39
(10.0)		 1.38
(35.0)		 0.44
(11.2)		 0.53
(13.5)		 2.50
(63.5)
-BNH-FN4-4-3W 1/4 Female NPT 1/4 Female NPT 0.16
(4.0)		 0.35 1.06
(27.0)		 1.06
(27.0)		 0.50
(12.7)		 1.88
(47.8)		 0.50
(12.7)		 0.78
(19.8)		 2.97
(75.5)
-BNH-FN6-5-3W 3/8 Female NPT 3/8 Female NPT 0.2
(5.1)		 0.56 1.06
(27.0)		 1.06
(27.0)		 0.50
(12.7)		 1.88
(47.8)		 0.50
(12.7)		 0.78
(19.8)		 2.97
(75.5)
-BNH-FN8-6-3W 1/2 Female NPT 1/2 Female NPT 0.25
(6.4)		 0.70 1.50
(38.1)		 1.50
(38.1)		 0.75
(19.1)		 3.00
(76.2)		 0.75
(19.1)		 1.03
(26.2)		 3.91
(93.3)
-BNH-FN12-7-3W 3/4 Female NPT 3/4 Female NPT 0.29
(7.5)		 0.95 1.63
(41.3)		 1.63
(41.3)		 0.75
(19.1)		 3.00
(76.2)		 0.75
(19.1)		 1.03
(26.2)		 3.91
(93.3)
-BNH-MN2-3-3W 1/8 Male NPT 1/8 Male NPT 0.08
(3.0)		 0.20 0.81
(21.6)		 0.81
(21.6)		 0.39
(10.0)		 1.38
(35.0)		 0.44
(11.2)		 0.53
(13.5)		 2.50
(63.5)
-BNH-MN4-4-3W 1/4 Male NPT 1/4 Male NPT 0.16
(4.0)		 0.35 0.98
(25.0)		 0.98
(25.0)		 0.39
(10.0)		 1.38
(35.0)		 0.44
(11.2)		 0.53
(13.5)		 2.50
(63.5)
-BNH-MN6-5-3W 3/8 Male NPT 3/8 Male NPT 0.2
(5.1)		 0.56 1.12
(28.4)		 1.12
(28.4)		 0.50
(12.7)		 1.88
(47.8)		 0.50
(12.7)		 0.78
(19.8)		 2.97
(75.5)
-BNH-MN8-6-3W 1/2 Male NPT 1/2 Male NPT 0.25
(6.4)		 0.70 1.50
(38.1)		 1.50
(38.1)		 0.50
(12.7)		 1.88
(47.8)		 0.50
(12.7)		 0.78
(19.8)		 2.97
(75.5)
-BNH-MN12-7-3W 3/4 Male NPT 3/4 Male NPT 0.29
(7.5)		 0.95 1.63
(41.3)		 1.63
(41.3)		 0.75
(19.1)		 3.00
(76.2)		 0.75
(19.1)		 1.03
(26.2)		 3.91
(93.3)
Basic Ordering Number Connection Type and Size Orifice in(mm) Cv Dimension, in.(mm)
Inlet Outlet L1 L2 C D E F H
-BNH-FT2-2-3W 1/8” Tube 1/8” Tube 0.12
(3.0)		 0.20 0.98
(25.0)		 0.98
(25.0)		 0.39
(10.0)		 1.38
(35.0)		 0.44
(11.2)		 0.53
(13.5)		 2.50
(63.5)
-BNH-FT4-4-3W 1/4” Tube 1/4” Tube 0.16
(4.0)		 0.35 1.12
(28.4)		 1.12
(28.4)		 0.39
(10.0)		 1.38
(35.0)		 0.44
(11.2)		 0.53
(13.5)		 2.50
(63.5)
-BNH-FT6-5-3W 3/8” Tube 3/8” Tube 0.20
(5.1)		 0.56 1.29
(32.8)		 1.29
(32.8)		 0.50
(12.7)		 1.88
(47.8)		 0.50
(12.7)		 0.78
(19.8)		 2.97
(75.5)
-BNH-FT8-6-3W 1/2” Tube 1/2” Tube 0.25
(6.4)		 0.70 1.40
(35.6)		 1.40
(35.6)		 0.50
(12.7)		 1.88
(47.8)		 0.50
(12.7)		 0.78
(19.8)		 2.97
(75.5)
-BNH-FT12-9-3W 3/4” Tube 3/4” Tube 0.29
(7.5)		 0.95 1.90
(48.3)		 1.90
(48.3)		 0.75
(19.1)		 3.00
(76.2)		 0.75
(19.1)		 1.03
(26.2)		 3.91
(93.3)
-BNH-MT3-2-3W 3 mm 3 mm 0.08
(2.0)		 0.09 0.98
(25.0)		 0.98
(25.0)		 0.39
(10.0)		 1.38
(35.0)		 0.44
(11.2)		 0.53
(13.5)		 2.50
(63.5)
-BNH-MT6-4-3W 6 mm 6 mm 0.16
(4.0)		 0.35 1.12
(28.4)		 1.12
(28.4)		 0.39
(10.0)		 1.38
(35.0)		 0.44
(11.2)		 0.53
(13.5)		 2.50
(63.5)
-BNH-MT8-4-3W 8 mm 8 mm 0.16
(4.0)		 0.35 1.17
(29.6)		 1.17
(29.6)		 0.39
(10.0)		 1.38
(35.0)		 0.44
(11.2)		 0.53
(13.5)		 2.50
(63.5)
-BNH-MT10-5-3W 10 mm 10 mm 0.20
(5.1)		 0.56 1.29
(32.8)		 1.29
(32.8)		 0.50
(12.7)		 1.88
(47.8)		 0.50
(12.7)		 0.78
(19.8)		 2.97
(75.5)
-BNH-MT12-6-3W 12 mm 12 mm 0.25
(6.4)		 0.70 1.40
(35.6)		 1.40
(35.6)		 0.50
(12.7)		 1.88
(47.8)		 0.50
(12.7)		 0.78
(19.8)		 2.97
(75.5)
-BNH-MT14-6-3W 14 mm 14 mm 0.25
(6.4)		 0.70 1.56
(39.7)		 1.56
(39.7)		 0.50
(12.7)		 1.88
(47.8)		 0.50
(12.7)		 0.78
(19.8)		 2.97
(75.5)
-BNH-MT18-7-3W 18 mm 18 mm 0.29
(7.5)		 0.95 1.75
(44.5)		 1.75
(44.5)		 0.75
(19.1)		 3.00
(76.2)		 0.75
(19.1)		 1.03
(26.2)		 3.91
(93.3)
-BNH-MT20-7-3W 20 mm 20 mm 0.29
(7.5)		 0.95 1.90
(48.3)		 1.90
(48.3)		 0.75
(19.1)		 3.00
(76.2)		 0.75
(19.1)		 1.03
(26.2)		 3.91
(93.3)

1. Sizes and types listed are standard. Other sizes and types are available upon request; refer to the ordering information.
2. Dimensions are shown with HZPT nuts finger-tightened. All dimensions are for reference only and are subject to change.
3. For dimensions not shown above, please contact the authorized representative or HZPT employees.

How Does the Integral Bonnet Needle Valve Work?

Integral bonnet needle valves are a type of valve that is used to control the flow of fluids and gases. They are typically used in applications where precise flow control is required, such as in laboratories, chemical plants, and refineries.

Integral bonnet needle valves work by using a tapered needle to gradually restrict the flow of fluid or gas. The needle is controlled by a stem, which is typically turned by a handle. As the handle is turned, the needle moves up or down, opening or closing the valve.

Integral bonnet needle valves have a number of advantages over other types of valves, including:

  • Precise flow control: Integral bonnet needle valves can be used to control the flow of fluids and gases very precisely. This is because the needle can be adjusted in very small increments.
  • Leak-tight seal: Integral bonnet needle valves have a leak-tight seal, which means that they can be used to control the flow of hazardous fluids and gases.
  • Durability: Integral bonnet needle valves are made from durable materials, such as stainless steel and brass. This makes them resistant to corrosion and wear.

Here is a more detailed explanation of how integral bonnet needle valves work:

  1. The fluid or gas enters the valve through the inlet port.
  2. The fluid or gas then flows through the valve body and into the seat.
  3. The needle is positioned in the seat, blocking the flow of fluid or gas.
  4. When the handle is turned, the stem moves the needle up or down.
  5. As the needle moves up, it opens the valve and allows fluid or gas to flow.
  6. As the needle moves down, it closes the valve and restricts the flow of fluid or gas.

The amount of fluid or gas that flows through the valve is controlled by the position of the needle. The more the needle is opened, the more fluid or gas will flow. The more the needle is closed, the less fluid or gas will flow.

How Does the Integral Bonnet Needle Valve Work How Does the Integral Bonnet Needle Valve Work

Integral Bonnet Needle Valve Installation and Maintenance:

Integral Bonnet Needle Valve Installation

To install an integral bonnet needle valve, follow these steps:

  1. Lock out the valve by isolating it from the system and depressurizing it.
  2. Select the appropriate fitting end connections for the valve inlet and outlet ports.
  3. Thread the valve end connections into the mating pipe or tubing connections.
  4. Tighten the end connections with a wrench or socket to the manufacturer's recommended torque.
  5. Open the valve slowly to allow the system to pressurize.
  6. Check for leaks at all connections.

Integral Bonnet Needle Valve Maintenance

Integral bonnet needle valves require minimal maintenance. However, it is important to inspect the valve regularly for signs of wear or damage. If any problems are found, the valve should be repaired or replaced immediately.

To inspect an integral bonnet needle valve, follow these steps:

  1. Lock out the valve by isolating it from the system and depressurizing it.
  2. Remove the packing nut from the valve body.
  3. Inspect the packing for signs of wear or damage. If the packing is worn or damaged, it should be replaced.
  4. Inspect the stem for signs of wear or damage. If the stem is worn or damaged, the valve should be repaired or replaced.
  5. Clean the packing nut and stem with a solvent.
  6. Apply a thin coat of lubricant to the stem threads.
  7. Reinstall the packing nut in the valve body.
  8. Tighten the packing nut until it is snug.
  9. Open and close the valve several times to check for leaks.
  10. Recheck the packing nut for tightness.

If the valve leaks after the packing nut has been tightened, the valve may need to be repackaged. Repacking instructions can be found in the valve manufacturer's documentation.

Integral Bonnet Needle Valve Installation and Maintenance

China Needle Valve Manufacturers

We're well-known as one of the leading needle valve manufacturers and suppliers, specializing in providing different kinds of fittings, instrument valves, and flanges. We warmly welcome you to buy high-quality needle valves in stock from our factory. Integral bonnet needle valves,, integral forged needle valves, forged needle valves, union bonnet needle valves, rising plug valves, gauge valves.

1. We established in July 2008.

2. We are a professional manufacturer of Instrumentation Tube Fittings, Pipe Fittings, Needle valves, Ball Valves, Check Valves, Valve Manifolds, DIN 2353 Fittings, SAE Flanges, Sampling systems, and Water Heater Accessories.

3. Products are available in a variety of different materials, such as Carbon Steel, Stainless steel 316/316L, Duplex, Super Duplex, Hastelloy, Monel, Inconel, Incoloy, and Titanium.

4. We are located in Hangzhou City, 2 two-hour drive to Shanghai, with convenient transportation access worldwide.

5. Our products are widely used in industries of Chemical, Petrochemical, Power Generation, Oil, Gas, and Shipbuilding.

6. Always available to discuss your requirements and ensure full customer satisfaction.

7. We have more than 50 CNC machines, 3D measurement equipment, Raw Material chemical composition inspection equipment, High-pressure test equipment, etc.

8. We have obtained ISO9001 and CE certificates and more than twenty utility model patents.

9. Our products are exported to the United States, Japan, Germany, South America, South Africa, Southeast Asia, and many other countries.

10. We also welcome OEM and ODM orders. Please feel free to contact and visit us.

China Needle Valve Manufacturers

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