Walworth Valves

WALWORTH – ASME-ANSI Class 150, 300, 600, 900, 1200 & 2500 Cast Steel and Forged Steel Gate, Globe and Check Valves, Trunion Mounted Ball Valves, Plug Valves, Duo Check, Slab Gate and Expanding Gate, AWWA Butterfly, Safety Relief Valves.

Gate, Globe, Checks

Since 1842 Walworth has supplied to the petrochemical, oil & gas, petroleum, power generation, pulp and paper, cryogenic and geothermal industries, among others. Over the years, the Company has produced more than 40,000 different types of products and serves as a global supplier to varied markets utilizing the expertise of over 500 trained employees. WALWORTH Valves are manufactured following strictly the most recognized international standards all over the world, such as API, ANSI, ASME, ASTM, MSS, NACE, AWWA, BSI, CSA, among others. One of the most important features of WALWORTH Cast Steel Valves is its guarantee to meet and exceed 50 ppm maximum low fugitive emissions leakage rate as furnished “off the shell” without a Customer’s special order requirement.

Walworth Order Fulfillment Center

Walworth Cast Steel Gate, Globe and Check Valves

WALWORTH® offers the product line manufactured in accordance with ANSI Classes 800, 1500 and 2500 and sizes from 1/4″ to 2″ for socket weld, threaded and combined ends. Valves are available also Integral Flanges in 150, 300, 600 and 1500 either Raised Face or ring type joint ends.

TYPE	SIZE	PRESSURE CLASS AS PER ASME B16.34	ENDS
Gate	2” to 72”	150, 300, 600, 900, 1500 & 2500 #	RF, RTJ or BW
Globe	2” to 24”	150, 300, 600, 900, 1500 & 2500 #	RF, RTJ or BW
Swing Check	2” to 48”	150, 300, 600, 900, 1500 & 2500 #	RF, RTJ or BW

Please find the entire range of Walworth product PDF files

Since 1842, is the leading company in industrial valve manufacturing for fluid control and vapor control technologies made in a wide variety of materials such as carbon and alloyed steels, austenitic and duplex stainless steels, nickel alloys, ductile iron, and bronze, just to mention a few, which are available as Gate, Globe, Check, Ball, Pressure Seal, AWWA Butterfly and Plug Valves, in the various alloy materials necessary to meet the required specifications for the valve industry.

Walworth Operational Videos

Walworth Globe Valve

Walworth Pressure Seal Gate Valve

Walworth Slab Gate Valve

Walworth Expanding Gate Valve

Walworth Floating Ball Valve

Walworth Steel Plug Valve

: Walworth Cast Steel Gate

The Walworth Cast Steel Gate Valve are used when the need exist for a device that allows an interruption or cut off the flow of a fluid. Is not recommendable to use Gate Valves for flow modulation as the high velocity of the through may result in erosive damage to the wedge and seats when the valve is partially opened. Under normal operating conditions, the valve should remain either fully open or fully closed. Installation of a Gate Valve is independent of the flow direction. Design Features;

Gate valves designed in accordance with API-600, solid or parallel slide wedge/disc.
Gate valves option in accordance with API-603 only for stainless steel & nickel alloys.
Standard manufacturing wedge from 2” to 4” solid wedge design; 5” and up flexible wedge.
Gate and Globe valves for Cryogenic service with gas column in accordance with BS-6364 upon request.
Flange dimensions in accordance with ASME B16.5 for valves up to 24” nominal diameter.
Hand-wheel, impact Hand-wheel, Chain-wheel, Gear operation, Electric, Pneumatic or Hydraulic Actuation as per Customer requirements.
By-Pass, Lantern rings, grease injectors, special connections, etc. Low fugitive emissions control.

The Walworth Cast Steel Globe valves are primarily used to modulate or regulate the volume of the flow. A Globe Valve is not recommended when a continuous full flow of fluid is required due to the high pressure drop inherent to the design of a Globe Valve. This type of valve should always be installed so the flow intake enters through the base of the valve seat. The valve has an arrow stamped on the body to indicate the preferred direction on flow.

Walworth Design Features

Globe valves design in accordance with ASME B16.34
Globe valves option in accordance with API-603 only for stainless steel & nickel alloys.
Gate & globe valves for cryogenic service with gas column in accordance with BS-6364 upon request
Flange dimensions in accordance with ASME B16.5 for valves up to 24″ nominal diameter
Handwheel, handwheel impact, chain wheel, gear operation, electric, pneumatic or hyydraulic actuation as per customer requirements
By-pass, lantern rings, grease injectors, special connections, etc.
Low fugitive emissions control
NACE service either MR-01-75 or MR-01-03.
Test in accordance with API-598
Stop check design option available

Walworth CAST STEEL Check Valves

Check valves are generally used to protect pumps or similar equipment, allowing the flow only in one direction and preventing flow reversal due to back pressure.The swing type check valves are designed to produce a low pressure drop in the pipeline. This design provides a tighht seal as well as a fast reaction to the closure.

Walworth Design Features

Swing check valves option in accordance with API-603 only for stainless steel & Nickel alloys.
Swing check valves for cryogenic service in accordance with BS-6364.
Flange dimensions in accordance with ASME B16.5 for valves up to 24” nominal diameter.
Damper & Counter weight options.
Drain connections as per Customer request.
Low fugitive emissions control.
NACE service either MR-01-75 or MR-01-03

Expanding Slab Gate valves

The WALWORTH Expanding Gate valve is manufactured in accordance with API-6D. This type of valve is suitable for onshore and offshore applications where suspended and abrasive solids are present in the uid or for oil and gas transportation and isolation service. The double block and bleed design offers a proper seal in between both seats and the gate in high and low pressure, for this reason, line pressure is not needed to seal the valve.

The principle of operation is based in two segment members of a disc which at an opened or closed position are capable to seal in both directions and isolate the bonnet cavity.

Trunnion Mounted Ball valves

Walworth-Trunnion_Ball_Valves_CatalogWalworth Trunnion Mounted ball valves are used primarily, but not limited to, the Oil & Gas Industry. Trunnion Mounted Ball valves are offered in Pressure Classes 150, 300, 600, 900, 1500 & 2500# and sizes from 2” up to 60” nominal diameter.WALWORTH® Trunnion Mounted Ball valves meet API-6D full bore specifications for piggable service avoiding turbulence and fluid pressure drop through the valve. WALWORTH® offers an array of materials used for this product line, including but not limited to:a) Carbon Steels like A105 or WCB.b) Low Carbon Steels like LF2, LF3 or LCB, LCC, etc.c) Stainless Steels like F316, F347 or CF8M, CF8C, etc.d) Duplex Stainless Steel like F51 or CD3MN.e) Super Duplex Stainless Steel like F55 or CD3MWCuN. WALWORTH® offers a variety of trim materials including but not limited to the full API-6D published trim list. Additional trims are available such as high strength steels like 17-4pH, duplex and super duplex steels (UNS S31803 or UNS S32750), high nickel alloys (Monel, Inconel, Incoloy, Hastelloy, etc), among others. Design Features include;

Trunnion Mounted Ball Valves in accordance with API-6D.
Bolted Body or Welded Body.
Metal to Metal Tungsten Carbide and stellite 6 coatings option available.
Carbon steel body, Inconel 625 internal cladding available.
Meets Fire Test in accordance API-6FA, API-607.
Full bore or reduced bore available.
Flange dimensions in accordance ASME B16.5 for valves up to 24”nominal diameter.
Flange dimensions in accordance MSS-SP-44, ASME/ANSI B16.47
Series A or B for valves over 26” nominal diameter.
Wrench, Gear or Electric Operated options.
Double Block and Bleed.
Bi-directional flow.
Anti-static device.
Blow out proof system.
NACE Service either MR-01-75 or MR-01-03.
Test in accordance API-6D.

Walworth Pressure Seal Gate and Globe Valves

Walworth Pressure Seal Gate and Globe Valve Brochure : https://flowandcontrol.com/wp-content/uploads/2010/09/Walworth-Pressure-_Seal_2011_12.pdf

The Walworth Pressure Seal Gate Valve is used when the need exist for a device that allows an interruption or cut off the flow of a fluid. In addition to Gate valves, Walworth Pressure seal products include: Globe Valves, Y-Pattern Globe Valves, Tilting Disc Check Valves, Swing Disc Check Valves and Lift Check Valves. Walworth Pressure Seal valves are available in the following Classes: 600, 900, 1500 and 2,500 psig.

Is not recommendable to use Gate Valves for flow modulation as the high velocity of the through may result in erosive damage to the wedge and seats when the valve is partially opened. Under normal operating conditions, the valve should remain either fully open or fully closed. Installation of a Gate Valve is independent of the flow direction.

Walworth Design Features

Design in accordance with ASME B16.34.
WE short pattern; RF & RTJ long pattern as per ASME B16.10.
Outside Screw & Yoke (OS&Y).
Flexible wedge.
Option with Parallel Slide disc available upon request.
Handwheel or gear operated depending on the size and class.
End to end dimensions as per ASME B16.10.
Flange dimensions as per ASME B16.5.
Weld end dimensions as per ASME B16.25

Walworth – Forged Steel Gate, Globe and Check Valves

Walworth FORGED STEEL CATALOG

Walworth Design Features

Valves in accordance with API-602.
Socket Weld, Threaded, Combined or Flanged RF or RTJ ends.
Bolted Bonnet or Welded Bonnet options.
Renewable or integral seats.
Low fugitive emissions control.
NACE Service either MR-0175 or MR-0103.
Test in accordance with API-598

TYPE	SIZE	PRESSURE CLASS AS PERASME/ANSI B16.34 FOR SW OR NPT ENDS	PRESSURE CLASS AS PER ASME/ANSI B16.34FOR RF OR RTJ ENDS
Gate	1/4” to 2”	800, 1500 & 2500#	150, 300, 600, 1500 & 2500 #
Globe	1/4” to 2”	800, 1500 & 2500#	150, 300, 600, 1500 & 2500 #
Piston Check	1/4” to 2”	800, 1500 & 2500#	150, 300, 600, 1500 & 2500 #
Ball Check	1/4” to 2”	800, 1500 & 2500#	150, 300, 600, 1500 & 2500 #
Swing Check	1/4” to 2”	800, 1500 & 2500#	150, 300, 600, 1500 & 2500 #

Product Range

TYPE	SIZE	PRESSURE CLASS AS PER ASME/ANSI B16.34	ENDS
Trunnion Ball Valve Bolted Body	2” to 60”	150, 300, 600, 900, 1500 & 2500#	RF, RTJ or BW
Trunnion Ball Valve Welded	2” to 60”	150, 300, 600, 900, 1500 & 2500#	RF, RTJ or BW

Walworth Ball Valves

Walworth – This product line is used primarily in the Oil & Gas, Building and construction Industries, Chemical and Petrochemical services, among others. WALWORTH® offers Floating Ball valves to provide positive shut-off while minimizing pressure drop.WALWORTH® offers an array of materials used for this product line, including but not limited to: a) Carbon Steel such as A-105 or WCB, etc.b) Stainless Steel such as CF8, CF8M, etc.c) Low Carbon Stainless Steel such as CF3, CF3M, CG3M, etc.d) Super Stainless Steel such as CN7M (Alloy 20), CN3M (Alloy 20 modified), CT15C, etc.e) Brass like B283 grade C37700.

Walworth – STEEL PLUG VALVES

Walworth – Walworth Steel Plug valves are used primarily, but not limited to, the Gas & Petroleum Pipeline, Pulp & Paper, Refineries, Chemical / Buildings, Water & Sewerage Industries. Steel Plug valves are used to prevent internal leakage. This product line is offered in Pressure Classes 150, 300, 600, 900, 1500 & 2500 # and sizes from 2” up to 36” nominal diameter.

Bottom Entry Compensator Plug valves in three patterns: Short, Regular and Venturi from 1/2” (8 mm) to 36” (900 mm) and pressure class in accordance ASME B16.34, 150 (PN 20), 300 (PN 50), 600 (PN 110), 900 (PN 150), 1500 (PN 260) & 2500 (PN 420).
Top Entry Steel Lubricated Plug Valve API Classes 2000#, 3000#, & 5000# and sizes from 2 1/2” to 4 1/16” nominal diameter.
Top Entry Steel Plug Valves in three patterns: short, regular and venturi and sizes from 2” (8 mm) to 36” (900 mm) and pressure classes in accordance ASME B16.34, 150#, 300# & 600#.
Gas service Steel Plug Valve in regular pattern from 3/4” to 2” and 150# (200 CWP)

Product Range

BOTTOM ENTRY COMPENSATOR STEEL PLUG VALVE	SIZE	PRESSURE CLASS AS PER ASME B16.34	ENDS
Short Pattern API-6D	2″ to 12″	150, 300, 600 #	RF, RTJ or BW
Regular Pattern API-6D	1/2″ to 12″	600, 900, 1500 & 2500 #	RF, RTJ or BW
Venturi Pattern API-6D	6″ to 36″	150, 300, 600, 900, 1500 #	RF, RTJ or BW
TOP ENTRY COMPENSATOR STEEL PLUG VALVE	SIZE	PRESSURE CLASS AS PER API	ENDS
Regular Pattern for offshore design	2 1/16″ to 4 1/16″	2000, 3000 & 5000	RF, RTJ or BW
TOP ENTRY STEEL PLUG VALVE	SIZE	PRESSURE CLASS AS PER ASME B16.34	ENDS
Short Pattern API-6D	1/2″ to 8″	150, 300 #	RF, RTJ or BW
Regular Pattern API-6D	1/2″ to 2″	600 #	RF, RTJ or BW
Venturi Pattern API-6D	14″ to 36″	150 #	RF, RTJ or BW
GAS SERVICE STEEL PLUG VALVE	SIZE	PRESSURE CLASS AS PER ASME B16.34	ENDS
Short Pattern API-6D	3/4″ to 8″	150 # ANSI, 200 CWP.	SW or BW

Walworth – WALWORTH® Iron valves

Walworth Cast Iron

WALWORTH® Iron valves are manufactured in accordance with MSS standards. The primarily use of this type of valve is the water industry. However, demands are coming more and more from Petroleum Refineries, Chemical plants, Sewage Treatment Plants and Municipalities. WALWORTH® offers this product line in the following base materials: Cast Iron in accordance ASTM A126 Class B offers this product line in the following standard trim: Bronze trim in accordance with ASTM B62 grade C83600.

Iron Gate

MSS-SP-70 OS&Y IRON GATE VALVE SIZES: 2 TO 24” ASME 125
Bidirectional flow
Minimal pressure drop
Smooth operation
Operates in fully open or closed position
Retains minimal line fluid
Seats fixed or screwed into the body
Moderate temperature service
Metal-metal sealing
Bore in accordance with ASME B16.1
OS&Y
Solid Wedge
Bolted Bonnet
Vertical or Horizontal Installation
Bronze Trim

Iron Globe

Single-directional flow
High pressure drop
Smooth operation
Regulates flow
Seats fixed or screwed into the body
Moderate temperature service
Metal-metal sealing
ASME B16.1 Reduced bore
OS&Y
Bolted Bonnet
Fully guided disc
Loose disc for efficient seal
Vertical or Horizontal Installation
Bronze Trim

Iron Check

Single-directional flow
Minimal pressure drop
Eliminates counterflow
Seats fixed or screwed into the body
Moderate temperature service
Metal-metal sealing
ASME B16.1 Reduced bore
Side plug design
Bolted Cover
Vertical or Horizontal Installation
Bronze Trim

WALWORTH® Expanding Gate valves

Walworth Expanding-Gate Valves

Walworth – WALWORTH® Expanding Gate valves are manufactured and tested in accordance with API-6D.

This type of valve is suitable for onshore and offshore applications where suspended and abrasive solids are present in the fluid or for oil and gas transportation and isolation service.

The double block and bleed design offers a proper seal in between both seats and the gate in both high and low pressure, for this reason line pressure is not needed to seal the valve. The principle of operation is based in two segmented members of a disc which at open or closed position is capable to seal in both directions.

WALWORTH® offers this product line in the following base materials:

a) Carbon Steel such as WCB, WCC.
b) Carbon Steel as per ASTM A216 grade WCB for NACE MR0-175 with 0.25%C maximum and 22HRc maximum hardness.
Design in accordance with API-6D.
Full thru-conduit port to permit pass scrapers, pigs and wipers.
Top entry for maintenance inline.
Double block and bleed at open or closed position.
Bi-directional.
Hand-wheel, Impact Hand-wheel, Chain-wheel, Gear operation, Electric, Pneumatic or Hydraulic Actuation as per Customer requirements.
Hard faced option is available for severe service with Tungsten carbide or stellite applied by HVOF process.
Test in accordance with API-6D

WALWORTH® AWWA Butterfly valves

Walworth AWWA Rated Butterfly Valves

Walworth Butterfly valves comply with AWWA C-504 standard. This type of valve with soft rubber (Buna) seats is used in the water treatment industry.

The AWWA WALWORTH® valves can be used for throttling as well as open/close applications. The main features are a leak proof hermetic seal, easy installation and operation at the maximum differential pressure. The soft Buna seats run the entire 360° of the disc, thus reducing turbulence and pressure drop. Butterfly valves are used in power generation, pollution control, the pulp and paper industry, water and waste water treatment facilities worldwide. WALWORTH® offers this product line in the following base materials: a) Cast Iron ASTM A126 grade Bb) Ductile Iron ASTM A536 grade 65-45-12c) Alloy Cast Iron ASTM A436 grade 2d) Cast Steel ASTM a 216 grade WCBe) Stainless Steel ASTM 351 grade CF8 M (Not listed by AWWA C-504,
but avalaible upon request).

Walworth Design Features

Design in accordance with AWWA C-504.
Uninterrupted 360° seat.
Underground installation.
Manual and automated operation as per Customer requirement.
Class A (maximum velocity at 8 feet per second).
Class B (maximum velocity at 16 feet per second).
Test in accordance with API-598.
Available disc in Aluminium Bronze ASTM B148 grade
Soft Seat in Neoprene (180ºF) & EDPM (275ºF) also available as per Customer request.

Product Range

TYPE	SIZE	PRESSURE CLASS AS PERAWWA C-504	ENDS	FIGURE Nr.
Ductil Iron Butterfly Valve Short Body	3” to 72”	75 A and B	FF OR RF	2111 (75A); 2110 (75B)
Cast Iron Butterfly Valve Wafer Body	3” to 72”	150 B	FF OR RF	2114 (150B)
Ductile Iron Butterfly Valve Short Body	3” to 72”	150A & 150B	FF OR RF	2117 (150A); 2116 (150B)

Walworth – Walworth Duo Check Valves

Walworth Duo Check Catalog

Walworth Duo-Check

WALWORTH® Duo Check valves are defined as the mechanical device which allows the flow of fluid to go in only one direction. Duo Check valves work by the differential pressure and fluid flow opening the hinged discs and compressing the spring. When the flow begins to slow down the spring gradually assists in the closing of the valve. When the flow stops the springs have already assisted in closing the valve and putting the two hinged discs in position to seal against the seat. Thus the springs begin close the valve and do not rely on a back flow to close. The spring loading effectively prevent the slamming (also know as water hammer) associated with other check valves.

WALWORTH® Duo Check valve (Dual Plate) valve design offers many advantages compared other check valves. Its compact size allows it to be installed in areas where space is a premium.

WALWORTH® offers an array of materials used for this product line, including but not limited to:
g) Carbon Steel like WCB.
h) Low Alloy Steel like WC6, WC9, etc.
i) Medium Alloy Steel like C5, C12, C12A, etc.
j) Stainless Steel like CF8, CF8M, CF8C, CF10, CG8M, etc.
k) Super Stainless Steel like CN7M (Alloy 20), CN3M (Alloy 20 modified), CT15C, etc.
l) High Nickel Alloys like Monel M30C, Monel M35-1, Monel CZ100, Inconel CY40 (Inconel 600), CW2M (Hastelloy C4), N12MV (Hastelloy B), CW12MW (Former Hastelloy C-276), CW6M (New Hastelloy C-276), CU5MCuC (Incoloy 825), N7M (Hastelloy B2), CW6MC (Inconel 625), etc.

WALWORTH® offers a variety of trim materials including but not limited to the full API-600 published trim list. Additional trims are available such as high strength steels, stainless steels, high nickel alloys (Monel, Inconel, Incoloy, Hastelloy, etc), among others.

Product Range

TYPE	SIZE	PRESSURE CLASS AS PER ASME/ANSI B16.34	ENDS
Duo Check Valve	2″ to 36”	150, 300, 600, 900 & 1500 #	FF, RF, RTJ

One of the most important features of WALWORTH Cast Steel Valves is its guarantee to meet and exceed 50 ppm maximum low fugitive emissions leakage rate as furnished “off the shell” without a Customer’s special order requirement.