Low Pressure Needle Valves

Needle Valve Features:

Non-rotating stem prevents galling and scoring
Five stem styles:
- Vee
- Regulating
- Metering
- Micro-Metering
- Soft Tip
17-4PH Stem for longer service life. 316 wetted parts are also available by specifying option -316WP
Glass-filled PTFE packing for temperatures up to 600°F (315°C)
Integral through holes for bracket mounting, a panel mounting option is also available
Wide range of options allow customizing of valve
Positive gland locking device

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BuTech Low Pressure Valves are designed for liquid and gas flow control in petroleum, chemical, power generating and general industrial applications.

Available in a variety of body styles, the valves are designed for operation at temperatures ranging from 0 to 650 F.

Their rugged construction provides assurance of fail-safe operation at pressures ranging to 15,000 PSI (1030 bar).

Note: BuTech Pressure Systems does not recommend compression sleeve connections below 0°F (-18°C) or above 650°F (343°C).

Materials of Construction

Standard materials of construction include 316 cold-worked stainless steel, 17-4PH, Ampco 45, and glass-filled PTFE. All BuTech equipment may also be produced in any machinable metal. Some of the more common exotic materials used are:

Hastelloy™
Inconel™
Titanium
Monel 400™

Tube Sizes: 1/8" through 1/2" ; Pressures to 15,000 PSI (1030 bar) ; Type: L/P Single Ferrule Compression

Tube O.D.	Connection	Orifice	Cv*	MAWP+
1/8"	1/8" L/P	0.094" (2.4 mm)	0.12	15,000 PSI 1030 bar
1/4"	1/4" SL/P	0.125" (3.2 mm)	0.20	11,500 PSI 790 bar
3/8"	3/8" SL/P	0.125" (3.2 mm)	0.20	7,500 PSI 520 bar
1/2"	1/2" L/P	0.375" (9.5 mm)	1.90	5,500 PSI 380 bar

*Cv values listed are for 2-way straight pattern valves excluding metering valves.

For 2-way angle pattern valves, increase Cv value by 50%.

For Metering Valves: Cv=.004, Port size=0.062" (1.57 mm) +Maximum allowable working pressure at 72o F (22o C)

1/8" L/P Tube, Single Ferrule Compression

Catalog Number	Stem Style	Connection	A	B	C	D	E	F	G	H	I	J	K	L	Thk.	Fig
SLPV21V SLPV21R	Vee Reg	1/8" L/P Tube	1.50" (38.1)	0.75" (19.1)	1.38" (35.1)	3.82" (97.0)	1.06"(26.9)	0.81" (20.6)	0.50" (12.7)	0.31" (7.9)	2.37" (60.2)	0.17" (4.3)	___	---	0.62" (15.7)	1
SLPV22V SLPV22R	Vee Reg	1/8" L/P Tube	1.50"(38.1)	0.75" (19.1)	1.56"(39.6)	4.00" (101.6)	---	0.81" (20.6)	0.50" (12.7)	0.31" (7.9)	2.37" (60.2)	0.17" (4.3)	---	---	0.62" (15.7)	2
SLPV23V SLPV23R	Vee Reg	1/8" L/P Tube	1.50"(38.1)	0.75" (19.1)	1.69"(42.9)	4.13" (104.9)	1.06"(26.9)	0.81" (20.6)	0.50" (12.7)	0.31" (7.9)	2.37" (60.2)	0.17" (4.3)	---	---	0.62" (15.7)	3
SLPV24V SLPV24R	Vee Reg	1/8" L/P Tube	1.50"(38.1)	0.75" (19.1)	1.56"(39.6)	4.00" (101.6)	0.81"(20.6)	0.81" (20.6)	0.50" (12.7)	0.31" (7.9)	2.37" (60.2)	0.17" (4.3)	---	---	0.62" (15.7)	4
SLPV25V SLPV25R	Vee Reg	1/8" L/P Tube	1.50"(38.1)	0.75" (19.1)	2.25"(57.2)	7.13"(181.1)	1.12"(28.4)	0.81" (20.6)	0.50" (12.7)	0.31" (7.9)	2.37" (60.2)	0.17" (4.3)	---	---	0.62" (15.7)	5
SLPV26V SLPV26R	Vee Reg	1/8" L/P Tube	1.50"(38.1)	0.75" (19.1)	1.69"(42.9)	4.13" (104.9)	---	0.81" (20.6)	0.50" (12.7)	0.31" (7.9)	2.37" (60.2)	0.17" (4.3)	0.50" (12.7)	0.63" (16.0)	0.62" (15.7)	6
SLPMV26V	Meter	1/8" L/P Tube	1.38"(35.1)	0.87" (22.1)	1.56"(39.6)	5.40" (137.2)	---	0.94"(23.9)	0.19" (4.8)	0.44" (11.2)	2.37" (60.2)	0.16" (4.1)	0.56" (14.2)	0.72" (18.3)	0.75" (19.1)	7
SLPMMV26V	Micro-Meter	1/8" L/P Tube	1.38"(35.1)	0.87" (22.1)	1.56"(39.6)	5.42" (137.7)	---	0.94"(23.9)	0.19" (4.8)	0.44"(11.2)	2.37" (60.2)	0.16" (4.1)	0.56" (14.2)	0.72" (18.3)	0.75" (19.1)	8

1/4" SL/P Tube, Single Ferrule Compression

Catalog Number	Stem Style	Connection	A	B	C	D	E	F	G	H	I	J	K	L	Thk.	Fig
SLPV41V SLPV41R	Vee Reg	1/4" SL/P Tube	2.00" (50.8)	1.00" (25.4)	2.00" (50.8)	4.50"(114.3)	1.62" (41.1)	1.19" (30.2)	0.62"(15.7)	0.38" (9.7)	3.00" (76.2)	0.25"(6.4)	___	---	0.75"(19.1)	1
SLPV42V SLPV42R	Vee Reg	1/4" SL/P Tube	2.00" (50.8)	1.00" (25.4)	2.44"(62.0)	4.94"(125.5)	---	1.19" (30.2)	0.62"(15.7)	0.38" (9.7)	3.00" (76.2)	0.25"(6.4)	---	---	0.75"(19.1)	2
SLPV43V SLPV43R	Vee Reg	1/4" SL/P Tube	2.00" (50.8)	1.00" (25.4)	2.62" (66.5)	5.12" (130.0)	1.62" (41.1)	1.19" (30.2)	0.62"(15.7)	0.38" (9.7)	3.00" (76.2)	0.25"(6.4)	---	---	0.75"(19.1)	3
SLPV44V SLPV44R	Vee Reg	1/4" SL/P Tube	2.00" (50.8)	1.00" (25.4)	2.44"(62.0)	4.94" (125.5)	1.19" (30.2)	1.19" (30.2)	0.62"(15.7)	0.38" (9.7)	3.00" (76.2)	0.25"(6.4)	---	---	0.75"(19.1)	4
SLPV45V SLPV45R	Vee Reg	1/4" SL/P Tube	2.00" (50.8)	1.00" (25.4)	3.38" (85.9)	8.38" (212.9)	1.68"(42.7)	1.19" (30.2)	0.62"(15.7)	0.38" (9.7)	3.00" (76.2)	0.25"(6.4)	---	---	0.75"(19.1)	5
SLPV46V SLPV46R	Vee Reg	1/4" SL/P Tube	2.00" (50.8)	1.00" (25.4)	2.25" (57.2)	4.75" (120.7)	---	1.19" (30.2)	0.62"(15.7)	0.38" (9.7)	3.00" (76.2)	0.25"(6.4)	0.50" (12.7)	0.63" (16.0)	0.75"(19.1)	6
SLPMV46V	Meter	1/4" SL/P Tube	2.50"(63.5)	1.25" (31.8)	2.62" (66.5)	6.69" (169.9)	---	1.31" (33.3)	0.69" (17.5)	0.38" (9.7)	3.00" (76.2)	0.25"(6.4)	0.75"(19.1)	1.03"(26.2)	1.00"(25.4)	7
SLPMMV46V	Micro-Meter	1/4" SL/P Tube	2.50"(63.5)	1.25" (31.8)	2.62" (66.5)	7.33" (186.2)	---	1.31"(33.3)	0.69" (17.5)	0.38" (9.7)	2.35" (59.7)	0.25"(6.4)	0.75"(19.1)	1.03"(26.2)	1.00"(25.4)	8

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1/4" SL/P Tube, Single Ferrule Compression

Catalog Number	Stem Style	Connection	A	B	C	D	E	F	G	H	I	J	K	L	Thk.	Fig
SLPV41V SLPV41R	Vee Reg	1/4" SL/P Tube	2.00" (50.8)	1.00" (25.4)	2.00" (50.8)	4.50"(114.3)	1.62" (41.1)	1.19" (30.2)	0.62"(15.7)	0.38" (9.7)	3.00" (76.2)	0.25"(6.4)	___	---	0.75"(19.1)	1
SLPV42V SLPV42R	Vee Reg	1/4" SL/P Tube	2.00" (50.8)	1.00" (25.4)	2.44"(62.0)	4.94"(125.5)	---	1.19" (30.2)	0.62"(15.7)	0.38" (9.7)	3.00" (76.2)	0.25"(6.4)	---	---	0.75"(19.1)	2
SLPV43V SLPV43R	Vee Reg	1/4" SL/P Tube	2.00" (50.8)	1.00" (25.4)	2.62" (66.5)	5.12" (130.0)	1.62" (41.1)	1.19" (30.2)	0.62"(15.7)	0.38" (9.7)	3.00" (76.2)	0.25"(6.4)	---	---	0.75"(19.1)	3
SLPV44V SLPV44R	Vee Reg	1/4" SL/P Tube	2.00" (50.8)	1.00" (25.4)	2.44"(62.0)	4.94" (125.5)	1.19" (30.2)	1.19" (30.2)	0.62"(15.7)	0.38" (9.7)	3.00" (76.2)	0.25"(6.4)	---	---	0.75"(19.1)	4
SLPV45V SLPV45R	Vee Reg	1/4" SL/P Tube	2.00" (50.8)	1.00" (25.4)	3.38" (85.9)	8.38" (212.9)	1.68"(42.7)	1.19" (30.2)	0.62"(15.7)	0.38" (9.7)	3.00" (76.2)	0.25"(6.4)	---	---	0.75"(19.1)	5
SLPV46V SLPV46R	Vee Reg	1/4" SL/P Tube	2.00" (50.8)	1.00" (25.4)	2.25" (57.2)	4.75" (120.7)	---	1.19" (30.2)	0.62"(15.7)	0.38" (9.7)	3.00" (76.2)	0.25"(6.4)	0.50" (12.7)	0.63" (16.0)	0.75"(19.1)	6
SLPMV46V	Meter	1/4" SL/P Tube	2.50"(63.5)	1.25" (31.8)	2.62" (66.5)	6.69" (169.9)	---	1.31" (33.3)	0.69" (17.5)	0.38" (9.7)	3.00" (76.2)	0.25"(6.4)	0.75"(19.1)	1.03"(26.2)	1.00"(25.4)	7
SLPMMV46V	Micro-Meter	1/4" SL/P Tube	2.50"(63.5)	1.25" (31.8)	2.62" (66.5)	7.33" (186.2)	---	1.31"(33.3)	0.69" (17.5)	0.38" (9.7)	2.35" (59.7)	0.25"(6.4)	0.75"(19.1)	1.03"(26.2)	1.00"(25.4)	8

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3/8" SL/P Tube, Single Ferrule Compression

Catalog Number	Stem Style	Connection	A	B	C	D	E	F	G	H	I	J	K	L	Thk.	Fig
SLPV61V SLPV61R	Vee Reg	3/8" SL/P Tube	2.00" (50.8)	1.00" (25.4)	2.00" (50.8)	4.50"(114.3)	1.62" (41.1)	1.19" (30.2)	0.62"(15.7)	0.38" (9.7)	3.00" (76.2)	0.25"(6.4)	___	---	0.75"(19.1)	1
SLPV62V SLPV62R	Vee Reg	3/8" SL/P Tube	2.00" (50.8)	1.00" (25.4)	2.44"(62.0)	4.94"(125.5)	---	1.19" (30.2)	0.62"(15.7)	0.38" (9.7)	3.00" (76.2)	0.25"(6.4)	---	---	0.75"(19.1)	2
SLPV63V SLPV63R	Vee Reg	3/8" SL/P Tube	2.00" (50.8)	1.00" (25.4)	2.62" (66.5)	5.12" (130.0)	1.62" (41.1)	1.19" (30.2)	0.62"(15.7)	0.38" (9.7)	3.00" (76.2)	0.25"(6.4)	---	---	0.75"(19.1)	3
SLPV64V SLPV64R	Vee Reg	3/8" SL/P Tube	2.00" (50.8)	1.00" (25.4)	2.44"(62.0)	4.94" (125.5)	1.19" (30.2)	1.19" (30.2)	0.62"(15.7)	0.38" (9.7)	3.00" (76.2)	0.25"(6.4)	---	---	0.75"(19.1)	4
SLPV65V SLPV65R	Vee Reg	3/8" SL/P Tube	2.00" (50.8)	1.00" (25.4)	3.38" (85.9)	8.38" (212.9)	1.68"(42.7)	1.19" (30.2)	0.62"(15.7)	0.38" (9.7)	3.00" (76.2)	0.25"(6.4)	---	---	0.75"(19.1)	5
SLPV66V SLPV66R	Vee Reg	3/8" SL/P Tube	2.00" (50.8)	1.00" (25.4)	2.25" (57.2)	4.75" (120.7)	---	1.19" (30.2)	0.62"(15.7)	0.38" (9.7)	3.00" (76.2)	0.25"(6.4)	0.50" (12.7)	0.63" (16.0)	0.75"(19.1)	6
SLPMV66V	Meter	3/8" SL/P Tube	2.50"(63.5)	1.25" (31.8)	2.62" (66.5)	6.69" (169.9)	---	1.31" (33.3)	0.69" (17.5)	0.38" (9.7)	3.00" (76.2)	0.25"(6.4)	0.75"(19.1)	1.03"(26.2)	1.00"(25.4)	7
SLPMMV66V	Micro-Meter	3/8" SL/P Tube	2.50"(63.5)	1.25" (31.8)	2.62" (66.5)	7.33" (186.2)	---	1.31"(33.3)	0.69" (17.5)	0.38" (9.7)	2.35" (59.7)	0.25"(6.4)	0.75"(19.1)	1.03"(26.2)	1.00"(25.4)	8

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1/2" L/P Tube, Single Ferrule Compression

Catalog Number	Stem Style	Connection	A	B	C	D	E	F	G	H	I	J	K	L	Thk.	Fig
SLPV81V SLPV81R	Vee Reg	1/2" L/P Tube	2.50" (63.5)	1.25" (31.8)	2.88"(73.2)	6.32"(160.5)	2.38"(60.5)	1.75"(44.5)	0.69"(17.5)	0.50"(12.7)	4.00"(101.6)	0.34"(8.6)	___	---	1.00"(25.4)	1
SLPV82V SLPV82R	Vee Reg	1/2" L/P Tube	2.50" (63.5)	1.25" (31.8)	3.38"(85.9)	6.82"(173.2)	---	1.75"(44.5)	0.69"(17.5)	0.50"(12.7)	4.00"(101.6)	0.34"(8.6)	---	---	1.00"(25.4)	2
SLPV83V SLPV83R	Vee Reg	1/2" L/P Tube	2.50" (63.5)	1.25" (31.8)	3.62"(91.9)	7.06"(179.3)	2.38"(60.5)	1.75"(44.5)	0.69"(17.5)	0.50"(12.7)	4.00"(101.6)	0.34"(8.6)	---	---	1.00"(25.4)	3
SLPV84V SLPV84R	Vee Reg	1/2" L/P Tube	2.50" (63.5)	1.25" (31.8)	3.38"(85.9)	6.82"(173.2)	1.75"(44.5)	1.75"(44.5)	0.69"(17.5)	0.50"(12.7)	4.00"(101.6)	0.34"(8.6)	---	---	1.00"(25.4)	4
SLPV85V SLPV85R	Vee Reg	1/2" L/P Tube	2.50" (63.5)	1.25" (31.8)	5.12"(130.0)	12.00"(304.8)	2.56"(65.0)	1.75"(44.5)	0.69"(17.5)	0.50"(12.7)	4.00"(101.6)	0.34"(8.6)	---	---	1.00"(25.4)	5
SLPV86V SLPV86R	Vee Reg	1/2" L/P Tube	2.50" (63.5)	1.25" (31.8)	3.25" (82.6)	7.72"(196.1)	---	1.75"(44.5)	0.69"(17.5)	0.50"(12.7)	4.00"	0.34"(8.6)	0.75"(19.1)	0.63" (16.0)	1.00"(25.4)	6

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Replacement Parts

BuTech offers replacement parts in a variety of packages so you can purchase just the parts you need.
Replacement Stem Kit contains just the stem
Replacement Packing Kit contains all soft packing rings
Repair Kits contain stem, stem sleeve, stem nuts and washers, packings and packing washers (replacement seat where applicable)

	Repair Kits		Replacement Stem	Replacement Packings	Replacement Valve Body
Valve Series	All others	Replaceable Seat	Replacement Stem	Replacement Packings	Replacement Valve Body
SLPV2	RK-SLPV2*	RK-SLPV26*	LPS2*	LPPK2	SLPV2+
SLPV4	RK-SLPV4*	RK-SLPV46*	LPS4*	LPPK4	SLPV4+
SLPV6	RK-SLPV6*	RK-SLPV66*	LPS6*	LPPK6	SLPV6+
SLPV8	RK-SLPV8*	RK-SLPV86*	LPS8*	LPPK8	SLPV8+

*Complete catalog number by adding the following:

V or R
Suffix for special packing materials (see page LP-3)
(ex. -GR for Grafoil packings)
Suffix for special materials
(ex. -HC for Hastelloy)
-WAO for a valve fitted with an actuator

+Complete catalog number by adding the flow path designator:

2-way straight
2-way angle
3-way, 2 connections on pressure
3-way, 1 connection on pressure
2-stem manifold
2-way angle with replaceable seat

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Low Pressure Needle Valves

Overview

Tube Sizes: 1/8" through 1/2" ; Pressures to 15,000 PSI (1030 bar) ; Type: L/P Single Ferrule Compression

Needle Valves for 15,000 PSI (1030 bar)

1/8" L/P Tube, Single Ferrule Compression

1/4" SL/P Tube, Single Ferrule Compression

Needle Valves for 11,500 PSI (790 bar)

1/4" SL/P Tube, Single Ferrule Compression

Needle Valves for 7,500 PSI (520 bar)

3/8" SL/P Tube, Single Ferrule Compression

Needle Valves for 5,500 PSI (380 bar)

1/2" L/P Tube, Single Ferrule Compression

Replacement Parts

Replacement Parts

Downloads

BuTech Low Pressure Valves

BuTech Medium Pressure Valves

High Pressure Needle Valves

Subsea Needle Valves

Hydrogen Needle Valves