Instrumentation Needle Valve

Instrumentation Needle Valves

Introduction

The YNV01 Series Instrumentation Needle Valve from YDB Valve is designed for precise flow control in high-pressure and high-accuracy applications. With a finely threaded stem and robust stainless steel construction, it provides smooth, gradual regulation of flow, making it ideal for instrumentation panels, gas sampling systems, and chemical injection lines. The compact design and high-pressure capability ensure reliable operation even in demanding environments.

Engineered for versatility, the YNV01 offers various end connections, seat materials, and pressure ratings to suit a wide range of media and applications. Its leak-tight shut-off and corrosion-resistant body ensure long service life with minimal maintenance. Whether installed in laboratories, refineries, or industrial process lines, the YNV01 delivers reliable performance, safety, and precision control where it matters most.

Applications

Oil & Gas Industry

Control of hydrocarbon fluids, sampling, and pressure measurement systems.

Water Treatment

Flow regulation in filtration, sampling, and chemical dosing systems.

Power Generation Industry

Steam systems, pressure monitoring, and boiler instrumentation.

Chemical Plants

Flow control in chemical dosing, mixing systems, and sampling lines.

Pharmaceutical Industry

Sterile fluid control and pressure monitoring in cleanroom environments.

Mining & Metals

Control of slurry, reagent dosing, and pressure monitoring systems.

Features & Benefits

Available in material SS316, Inconel, Monel, Duplex etc. all wetted parts in accordance with NACE MR01-75
Heat Code Traceable to certified material test report
Low operating torques
Bar stock Body in Straight Pattern
Anti Blow-out stem, Variety of stem tips
PTFE packing standard
Flow coefficient (Cv) From 0.35 to 1.8
Orifice size : 0.156″ (4.0 mm), 0.250″ (6.4mm), 0.375″ (9.5mm)
Variety of end configuration includes YDB ODT Tube Fittings, Male / Female NPT, BSPT, BSPP pipe and tube socket weld connections
Every valve is factory tested.

Operating parameters

Pressure Rating : upto 6000 psig (413 bar) at CWP
Temperature Rating : -54°C to 232°C with standard PTFE packing upto 426°C with optional Graphite packing

Applications

General Plant Service
Instrument Isolation
Hydraulic and Pneumatic
Pressure measurement devices
Venting

Technical Data

The Temperature and Pressure rating for a standard valve with PTFE packing

Temperature	Pressure
Temperature	psig	bar
-54°C to 38°C	6000	408
-54°C to 93°C	5160	351
-54°C to 148°C	4660	317
-54°C to 204°C	4280	291
-54°C to 232°C	4130	289

Material of Constructions

Sr No.	Description	Material
1.	Bar Handle	SS316
2.	Set Screw	SS316
3.	Stem	SS316
4.	Stem Tip	SS316
5.	Packing Bolt	SS316
6.	Lower Bonnet	SS316
7.	Lock Nut	SS316
8.	Packing	PTFE
9.	Packing Washer	SS316
10.	Washer	SS316
11.	Lock Pin	SS316
12.	Dust Cap	PVC
13.	Valve Body	SS316

Operation

Testing

Standard Test: Each valve is factory tested with nitrogen at 1000 psig (69 bar) for leakage at the seat and packing.
Optional Hydrostatic test: This test is performed with de-ionised water at 1.5 time the working pressure.

Stem Type

YDB Needle Valves are available with choice of optional stem to provide greater flexibility.

NON-ROTATING (NR) : It is Standard self centering non rotating stem tip typically used in high cycle application to extend the valve life.
V-STEM (VS) : It is used for general purpose liquid and gases.
SOFT SEAT (SS) : A soft seat stem requires a lower sealing torque, It is replaceable and suitable for temperature upto 120°C
REGULATING STEM (RS) : It is used where some degree of flow control required.

InNeedle Valve Series : YNV01

END CONNECTOR		DIMENSION (MM)						PART NO.
INLET	OUTLET	A	B	C	D	E	F	PART NO.
1/4″ ODT	1/4″ ODT	73.0	36.5	25.4	4.3	73.0	54.0	YNV01-TT4
3/8″ ODT	3/8″ ODT	73.0	36.5	28.6	4.3	88.0	60.0	YNV01-TT6
1/2″ ODT	1/2″ ODT	77.8	38.9	28.6	6.4	88.0	60.0	YNV01-TT8
3/4″ ODT	3/4″ ODT	85.2	42.9	31.8	6.4	114.0	67.0	YNV01-TT12
6MM ODT	6MM ODT	73.0	36.5	25.4	4.3	73.0	54.0	YNV01-TT6M
8MM ODT	8MM ODT	73.0	36.5	25.4	4.3	73.0	54.0	YNV01-TT8M
10MM ODT	10MM ODT	73.0	36.5	28.6	6.4	88.0	60.0	YNV01-TT10M
12MM ODT	12MM ODT	77.8	38.9	28.6	6.4	88.0	60.0	YNV01-TT12M
1/8″ FNPT	1/8″ FNPT	57.2	28.6	25.4	4.3	73.0	52.0	YNV01-FF2N
1/4″ FNPT	1/4″ FNPT	57.2	28.6	25.4	4.3	73.0	54.0	YNV01-FF4N
3/8″ FNPT	3/8″ FNPT	57.2	28.6	28.6	6.4	88.0	60.0	YNV01-FF6N
1/2″ FNPT	1/2″ FNPT	66.6	33.3	31.8	6.4	88.0	67.0	YNV01-FF8N
3/4″ FNPT	3/4″ FNPT	69.8	34.9	35.0	9.5	114	67.0	YNV01-FF12N
1″ FNPT	1″ FNPT	82.6	41.3	45.0	9.5	122	73.0	YNV01-FF16N
1/4″ MNPT	1/4″ MNPT	57.2	28.6	25.4	4.3	73.0	54.0	YNV01-MM4N
1/4″ MNPT	1/4″ FNPT	60.2	30.1	25.4	4.3	73.0	54.0	YNV01-MF4N
1/2″ MNPT	1/2″ FNPT	69.8	34.9	31.8	6.4	88.0	60.0	YNV01-MF8N
3/4″ MNPT	3/4″ MNPT	76.2	38.1	35.0	9.5	114.0	67.0	YNV01-MF12N
1″ MNPT	1″ FNPT	85.8	42.9	45.0	9.5	122.0	73.0	YNV01-MF16N
1/4″ TSW	1/4″ TSW	57.2	28.6	25.4	4.3	73.0	54.0	YNV01-TSW4
3/8″ TSW	3/8″ TSW	57.2	28.6	28.6	6.4	88.0	60.0	YNV01-TSW6
1/2″ TSW	1/2″ TSW	66.6	33.3	28.6	6.4	88.0	60.0	YNV01-TSW8
3/4″ TSW	3/4″ TSW	69.8	34.9	31.8	9.5	114.0	67.0	YNV01-TSW12

– Dimensions shown with YDB ODT Nut are finger tight.
– Dimensions are for reference only and subject to change

Instrumentation Needle Valve