UNH Series Union Bonnet Needle Valves

Discover the precision and durability of Raydafon Group's UNH Series Union Bonnet Needle Valves, designed for accurate flow control in demanding industrial applications. Crafted with high-quality materials and advanced engineering, these valves ensure reliable performance and easy maintenance, making them ideal for professionals in chemical, pharmaceutical, and laboratory settings. Experience enhanced safety and efficiency, solving leakage and wear issues with superior design. Stand out from competitors with our unique union bonnet feature for quick assembly. Trust Raydafon Group for innovative solutions that drive productivity forward.

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Product Description

UNH Series Union Bonnet Needle Valves

Union bonnet needle valves are a type of valve that is used to precisely control the flow of fluids. They are characterized by their union bonnet construction, which allows the body of the valve to be easily removed for maintenance without disassembling the entire valve. Union bonnet needle valves are typically used in high-pressure and high-temperature applications, such as in the chemical, petrochemical, and power generation industries.

Some of the key benefits of union bonnet needle valves include:

Precise flow control: Union bonnet needle valves have a fine-tuned needle that allows for precise control of the flow of fluids. This is important in applications where even a small change in flow can have a significant impact on the process.
High pressure and temperature ratings: Union bonnet needle valves are available with high pressure and temperature ratings, making them suitable for use in a wide range of applications.
Easy maintenance: The union bonnet construction of these valves makes them easy to maintain. The body of the valve can be easily removed for maintenance without disassembling the entire valve.

Union bonnet needle valves are available in a variety of materials, including stainless steel, brass, and Monel. They are also available with a variety of end connections, such as threaded, welded, and flanged.

UNH Series Union Bonnet Needle Valve Features:

One-piece forged body.
Two-stem design: thread-hardened upper stem and smooth surface-hardened lower stem.
Accidentalvalve disassembly disabled by union bonnet construction
Upper stem thread lubricant isolated from system media.Linearly instead of helical movement of the nonrotating lower stem, avoiding galling damage to the seat and tips well as reducing the total friction area between the packing and the lower stem.
Safety back seating seating fully open position.
Panel mounting is available as an option
Steady and durable fastening of the handle by double lock pins.
Handle color options are available.
Leak-tight performance testing for every valve with nitrogen at the maximum working pressure
Maximum working pressure:UNH Series-Stainless steel:10000 psig（689 bar）
Working temperature：PTFE:-65°F to 450°F（-54°C to 232℃）PEEK:-65°F to 500°F（-54°C to 260°℃）Graphite:-65°F to 1200°F（-54°C to 649°℃）

Union Bonnet Needle Valve Standard Materials of Construction:

Item

Component

Valve Body Material

316 SS

Alloy 400

Titanium

Alloy C-276

Handle

Anodized aluminum or stainless steel or black knob

Set Screw

Stainless steel

Upper Stem

316 SS/A276

Packing Bolt

321 SS/A276

Lock Nut

316 SS/A276

Panel Nut

316 SS/B783

Gland

316 SS/A276

Alloy R-405/B164

Titanium Gr 4/B348

Alloy C-276/B574

Packing

PTFE or PEEK or graphite

Bonnet

316 SS/A479

Alloy R-405/B164

Titanium Gr 4/B348

Alloy C-276/B574

UInion Nut

316 SS/A276

11a11b

Lower Stem

316 SS/A276

Alloy R-405/B164

Titanium Gr 4/B348

Alloy C-276/B574

Body

316 SS/A182

Alloy 400/B164,

Titanium Gr 4/B348

Alloy C-276/B564

UNH Series Union Bonnet Needle Valve Dimensions:

Basic Ordering Number	Connection Type and Size		Orificein(mm)	Cv	Dimension, in.(mm)
Basic Ordering Number	Inlet	Outlet	Orificein(mm)	Cv	L1	L2	C	D	E	F	H
-UNH-FN2-4	1/8 Female NPT	1/8 Female NPT	0.16(4.0)	0.35	1.00(25.4)	1.00(25.4)	0.50(12.7)	2.50(63.5)	1.34(34.0)	0.78(19.8)	3.31(84.0)
-UNH-FN4-4	1/4 Female NPT	1/4 Female NPT	0.16(4.0)	0.35	1.13(28.6)	1.13(28.6)	0.50(12.7)	2.50(63.5)	1.34(34.0)	0.78(19.8)	3.31(84.0)
-UNH-FN6-6	3/8 Female NPT	3/8 Female NPT	0.25(6.4)	0.80	1.13(28.6)	1.13(28.6)	0.50(12.7)	2.50(63.5)	1.34(34.0)	0.78(19.8)	3.31(84.0)
-UNH-FN8-10	1/2 Female NPT	1/2 Female NPT	0.25(6.4)	0.80	1.56(39.6)	1.56(39.6)	0.78(19.8)	3.50(88.9)	1.91(48.5)	1.03(26.2)	4.13(105)

Hot Tags: UNH Series Needle Valves Manufacturer, Union Bonnet Valves Supplier, Custom Needle Valves Wholesale

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Contact Info



Address

Luotuo Industrial Area, Zhenhai District, Ningbo City, China


Tel

86-574-87167707


E-mail

[email protected]

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Basic Ordering Number	Connection Type and Size		Orifice in(mm)	Cv	Dimension, in.(mm)
Basic Ordering Number	Inlet	Outlet	Orifice in(mm)	Cv	L1	L2	C	D	E	F	H
-UNH-MN4-4	1/4 Male NPT	1/4 Male NPT	0.16(4.0)	0.35	1.13(28.6)	1.13(28.6)	0.50(12.7)	2.50(63.5)	1.34(34.0)	0.78(19.8)	3.31(84.0)
-UNH-MN6-6	3/8 Male NPT	3/8 Male NPT	0.16(4.0)	0.35	1.13(28.6)	1.13(28.6)	0.50(12.7)	2.50(63.5)	1.34(34.0)	0.78(19.8)	3.31(84.0)
-UNH-MN8-10	1/2 Male NPT	1/2 Male NPT	0.25(6.4)	0.80	1.56(39.6)	1.56(39.6)	0.78(19.8)	3.50(88.9)	1.91(48.5)	1.03(26.2)	4.13(105)
-UNH-SWT4-4	1/4 Soket Weld	1/4 Soket Weld	0.16(4.0)	0.35	1.13(28.6)	1.13(28.6)	0.50(12.7)	2.50(63.5)	1.34(34.0)	0.78(19.8)	3.70(94.0)
-UNH-SWT6-6	3/8 Soket Weld	3/8 Soket Weld	0.16(4.0)	0.35	1.13(28.6)	1.13(28.6)	0.50(12.7)	2.50(63.5)	1.34(34.0)	0.78(19.8)	3.31(84.0))
-UNH-SWT8-6	1/2 Soket Weld	1/2 Soket Weld	0.25(6.4)	0.80	1.56(39.7)	1.56(39.7)	0.78(19.8)	3.50(88.9)	1.91(48.5)	1.03(26.2)	4.85(123)
-UNH-SWM12-6	12 mm SW	12 mm SW	0.25(6.4)	0.80	1.56(39.7)	1.56(39.7)	0.78(19.8)	3.50(88.9)	1.91(48.5)	1.03(26.2)	4.85(123)
-UNH-SWM14-6	14 mm SW	14 mm SW	0.25(6.4)	0.80	1.56(39.7)	1.56(39.7)	0.78(19.8)	3.50(88.9)	1.91(48.5)	1.03(26.2)	4.85(123)
-UNH-FT4-4	1/4” Tube	1/4” Tube