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Check Valves

Apco Swing Check Valves (CVS)

DESIGN FEATURES:

APCO Swing Check Valves (CVS-6000/6000A & CVS-250/250A) are used to prevent the back flow of fluid by closing before flow reversal, thereby preventingslam and water hammer. APCO Swing Check Valves have been successfully installed in clean and dirty applications including sewage treatment, water treatment, water distribution, industrial water and wastewater services. APCO Swing Check Valves are constructed with a heavy cast or ductile iron body. The designs meet or exceed the current revision of AWWA standard C-508.

Apco Rubber Flapper Swing Check Valve (CRF)

DESIGN FEATURES:

Unique Simple Design with no moving parts. The Flapper does not swing from a Hinge Pin, it simply flexes open. The seat is on a 45° angle. The Flapper travels 35° from open to close usually before column reversal can occur. It has non-slam characteristics. The flapper is made of synthetic rubber (Buna-N standard). The valve can be buried and requires no regular maintenance. Recommended for Water, Sewage, Gas, Oil and Rubber lined for Chemicals. Ductile Iron Body with 125# class flanges rated to 175 PSI, 14 inch and larger Cast Iron Body valves with 125# class flanges rated to 150 PSI working pressure (other body materials and higher pressures available).

Apco Silent Check Valve (CSC)

DESIGN FEATURES:

Excellent to prevent Water Hammer, in multi-story buildings and vertical turbine pump installations, when pumping from a well to an elevated reservoir. The Valve closes, SILENTLY! Low in cost, reliable and requires no regular maintenance. Principle of operation: When pump stops, spring forces disc closed against slight pump head at zero velocity, (theoretically a static condition) hence, SILENT CLOSURE! Body - Cast Iron, Ductile Iron, Cast Steel, Stainless Steel or Bronze. Internals - Bronze, Stainless. Ratings 125# - 600# class.

Apco Slanting Disc Check Valve

DESIGN FEATURES:

The most reliable and efficient check valve available. The disc pivot point is off center. This precise constructed feature slows the closing of the disc. Split body design increases the flow area around the disc by 40% creating very low head loss. Seating is metal to metal. This valve is built to last! Available as a 'free swinging', 'free open-controlled close', or 'controlled open and close check valve'. The body is available in Cast Iron, Ductile Iron, Cast Steel or Stainless Steel. Pivot Pins and Seats are Bronze or Stainless Steel. Highly recommended for maximum efficiency in Power Plants and Water Pumping Stations. Ratings 125#, 250#, 300#, 600# class.

Check-All Flange Insert Valve

DESIGN FEATURES:

Flange Insert valves are the ultimate check valves in flanged systems. They provide the simplest most economical way to install check valves in a piping system, the valve body automatically positions the valve and holds it in place while bolts are being installed and tightened. Flange Insert valves are designed to fit between two mating ANSI flanges. The “Spring Housing” designated by the “A” dimension is designed to be inserted into the upstream pipe, thereby centering it in the pipe. Therefore, there must be clearance between the spring housing and the pipe or flange. Generally speaking, the FIV Class 150 and 300 valves (F1) are designed for standard schedule pipe or Class 150 or 300 flanges, and the FIV Class 600 (F6) valves are designed for schedule 80 pipe or Class 600 flanges.

Check-All Wafer Insert Valve

DESIGN FEATURES:

The Wafer Insert (WV) valve is designed to fit between two mating ANSI flanges. Two gaskets are required, instead of the one normally used. The "drop in" valve body fits inside the bolt circle for quick installation and removal in rigid piping applications where the use of the F1, F6, or FP are not practical. Many valves in this series meet API 594 and/or B16.34 requirements. Consult the factory for complete details.

Check-All Horizontal Vertical Flanged and Drilled Check Valve

DESIGN FEATURES:

The Check-All Flanged & Drilled (HV) check valve is a one-piece cast body valve with ANSI/ASME B16.5 Class 150 flanged ends. The HV series valve is used when higher flow rates and lower pressure drops are required. The valve is available in sizes 1 through 10 inches and standard materials of CF8M (cast 316 stainless) and WCB/WCC (cast carbon steel). The HV series valve is designed for use with mating ANSI class 150 flanges. Other materials are available upon request, please contact us.

Check-All Bushing Valve

DESIGN FEATURES:

The Bushing Valve (BU, BR) is a check valve with a standard bushing housing. The valve is adaptable to many types of service applications. It has very little restriction and produces a low pressure drop. It can be used quite effectively in systems where flow and pressure drop are critical by the use of a reducer coupling. The BU valve also makes an excellent vacuum breaker. The high flow rate insures maximum effectiveness for vacuum breaker service. By reversing the direction of flow it can also be used as a low pressure relief valve.

Check-All Connector Valve

DESIGN FEATURES:

The Connector (CN, CR) valve is a check valve with a pipe nipple or connector housing. It is designed to be used in installations where a check valve with male pipe threads are required. The CN valve is adaptable for use as a check valve, vacuum breaker, or low pressure relief valve. Two valves used in combination make an excellent pressure vacuum vent. NPT threads are per ASME B1.20.1. This valve is also available with ISO 7 "R" threads (CR).

Check-All Universal Low Pressure Check Valve

DESIGN FEATURES:

The Universal Low Pressure (U3, UR) check valve is a one piece body machined from bar stock and is designed for minimum pressure drop. The valve is light-weight, compact, and provides maintenance-free dependable service. NPT threads are per ASME B1.20.1 and this valve is also available with ISO 7 "Rp" threads (UR). For applications above 3000 PSIG, view our UN-10 series. For applications where weld joint are required view our UN-SWseries.

Check-All Universal High Pressure Check Valve

DESIGN FEATURES:

The Universal High Pressure (U1, R1) check valve is a one piece body machined from bar stock with female pipe threads. This valve is normally supplied with a "metal-to-metal" seat. NPT threads are per ASME B1.20.1 and also available with ISO 7 "Rp" threads. (R1). The valve is designed and manufactured for high pressure applications. For applications below 3000 PSIG, view our UN-3 series. Many valves in this series can be supplied with B16.34 certification. Consult the factory for more information.

Check-All Mini Check Valve

DESIGN FEATURES:

The Check-All Mini-Check is a three piece constructed check valve. The valve is designed for minimum pressure drops. The three piece construction permits many combinations of end fittings, which makes the valve adaptable for nearly every application. The Mini-Check is available with 1/8, 1/4, and 3/8 inch pipe threads, both male and female. It can also be adapted with a 1/8, 1/4 or 3/8 inch tubing end on one side and with a pipe thread end on the other just by changing the end fitting. Combinations of male and female threads are also available. Many valves in this series can be supplied with B16.34 certification.

Check-All 3-A Sanitary Check Valve

DESIGN FEATURES:

The 3-A Sanitary Check Valve is an all 316/316L stainless steel check valve with a standard 32 Ra or better finish, (consult factory for finer finish availability) for use in new or existing sanitary systems. The 3S design seals on the ID of sanitary ferrules with 3-A specified materials (standard is EPDM). The valve seals inside fittings such as Alfa Laval Inc. Bevel Seat, and Tri-Clamp®, Waukesha Cherry-Burrell® Q-Line, and S-Line and others with ID dimensions equal to the "F" dimensions listed in the Sizes & Dimensions. The valve is designed to be easily disassembled for cleaning and spare parts are available. The compact 3S fits inside a single set of ferrules, (ferrules not included) and requires no additional space in the line. The insert design makes it extremely economical when compared to full-bodied valves. The wide variety of seat materials and cracking pressure springs allows this series to be used as a check valve or vacuum breaker. Please specify when ordering.

Check-All Sanitary Cartridge Valve

DESIGN FEATURES:

The Sanitary Cartridge Valve (SC) is a stainless steel check valve for use in new or existing sanitary systems. The SC design seals on the ID of sanitary ferrules with replaceable food grade seals (Standard is FDA EPDM). The valves fits the Alfa Laval Inc. Bevel Seat and Tri-Clamp® fittings, the Waukesha Cherry Burrell® Q-Line and S-Line fittings, and others with ID dimensions equal to the "F" dimension listed in the Sizes & Dimensions. The compact SC design fits inside a single fitting and requires no additional space in the line. Its size makes it extremely economical when compared to full-bodied valves. Choose from Check-All's broad selection ofSeat Materials Cracking Pressure Options that allow this series to be used as a check valve, relief valve, or a vacuum breaker.

Check-All Sanitary Insert Valve

DESIGN FEATURES:

For over 50 years, the compact, fluoropolymer (PTFE/FEP/PFA), Sanitary Insert Valve has been used as the most economical solution to providing a check valve in a new or existing sanitary piping system. This valve style is designed to fit into grooved-end clamp-type fittings. Since the Sanitary Insert Valve replaces the gasket normally used with clamp joints, no extra space is required to accommodate the valve. Two different types of Sanitary Insert Valves are available. They are distinguished by the following designations in their part numbers:

TC - Designates Tri-Clamp® fittings manufactured by Alfa Laval Inc. as well as Waukesha Cherry-Burrell® S-Line Series of fittings.

CB - Designates the Waukesha Cherry-Burrell® Q-Line Series of fittings.

Check-All Butt Weld Valve

DESIGN FEATURES:

The Butt Weld (B4, B8) check valve is a one piece body machined from bar stock, eliminating porosity concerns and providing uniform density for more consistent welds. Made to ASME/ANSI B16.25 for schedule 40 pipe (B4), or schedule 80 pipe (B8) it carries rugged, dependable Check-All trim with a wide variety of seat materials and cracking pressures to choose from.

Check-All Universal Socket Weld Check Valve

DESIGN FEATURES:

The Universal Socket Weld (US) check valve is a one piece body machined from bar stock with socket weld ends and designed for a minimum pressure drop. It carries rugged, dependable Check-All trim and there are a wide variety of seat materials and cracking pressures to choose from. This valve series is particularly attractive when weld joints are required. The socket ends are machined to ASME/ANSI B16.11 dimensions.

Check-All Tubing Check Valve

DESIGN FEATURES:

The Tubing Check (TV) valve is constructed with compression tube fittings(flareless) and is designed for a minimum pressure drop. The valves are furnished complete with ferrules and nuts. The TV vale can also be used as a low pressure relief valve or vacuum breaker by using the desired spring settings. Many vales in this series can bu supplied with B16.34 certification. 

Check-All Tubing Check Valve Flared

DESIGN FEATURES:

The Tubing Check Valve-Flared (TF) is a three piece constructed check valve with 37º flared end fittings that conform to SAE J514 & ISO 8434-2. These valves are designed for maximum flow with minimal pressure drop. Many valves in this series can be supplied with B16.34 certification.

Check-All Lined Pipe Insert Valve

DESIGN FEATURES:

The Lined Pipe Insert (LP) valve is designed to mate between two flanges on most lined pipe systems. It provides the simplest most economical way to install a check valve in a lined piping system. No gaskets are required; just spread the flanges, center the valve and bolt the flanges together. LP valves are available in fluoropolymer (PTFE/FEP/PFA) and Alloy C-276 to satisfy the most demanding applications. The standard spring material is Alloy C-276. Other materials are available upon request.

Check-All Horizontal Vertical Flanged & Drilled PTFE Lined Check Valve

DESIGN FEATURES:

The Check-All Flanged & Drilled - Fluoropolymer PTFE Lined (HT) check valve is a one-piece body valve with ANSI/ASME B16.5 Class 150 flanged ends. The valve has a solid one-piece PTFE liner, which covers the flange faces out to the raised face diameter. All wetted surfaces are fluoropolymer (PTFE/FEP/PFA) including the FEP encapsulated stainless steel spring. Style HT bodies are made of cast Carbon Steel only. The liner is made of virgin PTFE. It is installed as one solid piece of PTFE and the internal geometrical shape is machined. The PTFE liner has a minimum wall thickness of 3/32 inch which guarantees against pin holes which can be present in fused liners.

Check-All Straight Sided Insert

DESIGN FEATURES:

The Straight Sided Insert (SI) is a thread less check valve designed to be inserted into any cavity where a check valve is needed and threads are not desired. The SI valve can be used as a low pressure relief valve or vacuum breaker by using the desired spring settings.

Check-All Union Insert Valve

DESIGN FEATURES:

The Union Insert (UV) valve is the threaded pipe counterpart of the Flange Insert Valve. Designed to be inserted into most standard and hammer type ground joint unions, it provides the simplest and most economical way to install a check valve in a threaded pipe system. A check valve may be installed anywhere in the system where there is a union. The valve works equally well in either a horizontal or vertical position with proper spring selection. Each Union Insert Valve is furnished with a metal tag, which is quickly attached to the union. The tag is attached when the valve is installed and provides a permanent record that the union contains a check valve.

Check-All CAV Custom Valves

DESIGN FEATURES:

The CAV series of valves are not catalog items but rather are custom designed and tailored to meet customer specific connections or valve configurations. If you have a check valve application where our standard catalog items do not quite match what you are looking for, contact our sales department to discuss your specific needs. 

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