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Severe Service Union Bonnet Valves VU6 - Straight or Angle Pattern, Both Kor-Lok Tube Fittings or Both Tube or Pipe Socket Welds

Severe Service Union Bonnet Valves VU6 - Straight or Angle Pattern, Both Kor-Lok Tube Fittings or Both Tube or Pipe Socket Welds PDF

Severe Service Union Bonnet Valves VU6 - Straight or Angle Pattern, Both Kor-Lok Tube Fittings or Both Tube or Pipe Socket Welds 1 zip

Severe Service Union Bonnet Valves VU6 - Straight or Angle Pattern, Both Kor-Lok Tube Fittings or Both Tube or Pipe Socket Welds 2 zip

Features

Pressure rating up to 6000psig (413bar) @38°C (100°F) Temperature rating from -53°C(-65°F) to 232°C (450°F) with standard PTFE packing, up to 648°C (1200°F) with Grafoil packing Roll threaded and hardened stem for long cycle life Severe Service Union bonnet design to ensure high integrity seal under severe environments Panel mounting without packing disruption

Materials of Construction

No.	Description	Materials
Body Materials		316SS	Alloy 400
1	Body	316SS	Alloy 400
2	Stem	316SS	Alloy R-405/B164
3	Bonnet	316SS	Alloy R-405/B164
4	Packing Support	Glass-Filled PTFE
5	Packing	PTFE
6	Gland	316SS	Alloy R-405/B164
7	Packing Bolt	316SS	Alloy R-405/B164
8	Panel Nut	316SS	Alloy R-405/B164
10	Union Nut	316SS	Alloy R-405/B164
11	Lock Nut	316SS	Alloy R-405/B164
12	Set Screw	304SS
13	Handle	304SS

Application

Severe service application, high pressure sampling and shut-down systems,
test stands

Sour Environment Services

UNILOK valves are comply with NACE MR-0175/ISO 15156 for sour oilfield application or NACE MR-0103 for petroleum refining operations. To order, add-N to the end of part number.

Cleaning

UNILOK valves are free from machine oils, loose particles and grease throughout the close cleaning process.

Testing

Every valve is 100% factory tested with air and nitrogen at 1000psig(69bar) for leakage at the seat and packing. Each test is performed to a maximum allowable leak rate of 0.1scc/min.

Important Notification

Proper installation, materials compatibility, operation and maintenance of these valves are the responsibility of the user. The total system design must be taken into consideration to ensure optimal performance and safety.
The packing adjustment may be required during the valve’s service life.

How To Order

UNILOK VU6 series Severe Service union bonnet valves are ordered by part number as shown below.

Example: The fllowing part number, VU62F-04N-SS is designated for VU6 series Severe Service union bonnet valve with1/4″ female NPT to 1/4″ female NPT, 316SS.

Valve Type
U6	Straight Pattern
U6A	Angle Pattern

Connection Type
U	UNILOK Tube Fitting
F	Female NPT or ISO7/1(PT)
M	Male NPT or ISO7/1 (PT)
WS-	Socket Weld - Tube
WS-	Socket Weld - Pipe

Connection Size
Fractional(Inch) Tube O.D. Designation
Tube O.D.	inch	1/8	1/4	3/8	1/2	3/4	1
Tube O.D.	mm	3.17	6.35	9.52	12.70	19.05	25.40
Designator		02T	04T	06T	08T	12T	16T

Metric Tube O.D. Designation
Tube O.D.	mm	6	8	10	12
Designator		M06T	M08T	M10T	M12T

Weld Size Designation
Tube Size	1/4	3/8	1/2	3/4
Designator	04T	06T	08T	12T
Pipe Size	1/4	3/8	1/2	-
Designator	04P	06P	08P	-

Body Materials
SS	316SS
MO	Alloy400

Stem Type
None	Vee Stem
R	Regulating
S	Soft-Seat
B	Ball

Packing Materials
None	PTFE
PK	PEEK
GF	Grafoil

Pipe Size Designation (NPT or ISO7/1-PT)
Pipe Size	1/8	1/4	3/8	1/2	3/4	1
Degsinator	02N/R	04N/R	06N/R	08N/R	12N/R	16N/R

Stem Types

Metal to metal vee stem is standard for pressure tightness even at elevated temperature. Regulating stem, ball stem and soft-seat stem with KEL-F are available as optional. The excessive force when closing valve may damage both seat and stem tip, particularly soft-seat stem.

Panel Mounting Procedure

Loose handle set screw using appropriate allen key.
Disassemble Lock nut and panel nut.
Insert the valve into the panel hole.
Tighten panel nut and Lock nut onto the valve bonnet.
Reassemble handle.
Tighten panel nut when fully closing of the valve.

Pressure -Temperature Rating

Body Material	Stem	PTFE packing
		Temperature Rating		Pressure Rating @ 38?
316SS	Vee, Ball Regulating	-54~232	-65~450	6000	413
316SS	Soft-seat [Kel-F]	-54~93	-65~200	6000	413
Alloy400	Vee, Ball Regulating	-54~232	-65~450	5000	345
Alloy400	Soft-seat [Kel-F]	-54~93	-65~200	5000	345

For the service with aromatic heat transfer fluids or concentrated sulfuric
and nitric acids, PEEK is not recommended.

Packing Material	Body Material	Temperature Rating		Pressure Rating @Max Temperature
		?	?	psig	bar
PTFE	316SS	-54~232	-65~450	4130	285
PTFE	Alloy400	-54~232	-65~450	3970	274
PEEK	316SS	-54~315	-65~600	3760	260
PEEK	Alloy400	-54~260	-65~500	3960	273
Grafoil	316SS	-54~648	-65~1200	1715	119
Grafoil	Alloy400	-54~260	-65~500	3960	273

Alloy 400/Monle is not applicable over 260?(500?)

Ordering Information & Dimensions

ISO7/1 Tapered Threads (PT) are available for all fractional sizes of VU6 series
valves. Add “R” as a suffix instead of “N”.

Severe Service Union Bonnet Valves VU6 - Straight or Angle Pattern, Both Kor-Lok Tube Fittings or Both Tube or Pipe Socket Welds

Ordering Information & Dimensions

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