Check

A Check Valve is a device that allows liquid or gas to flow through it in only one direction. Check Valves generally work automatically and have no external controls. Other names for Check Valves are clack valves, one-way valves, and non-return valves. Two different Check Valves also known as clack valves, one-way valves and non-return valves.
  • Check Valves are stocked in sizes from 1/2" to 4".
  • Available in a variety of materials including brass, bronze and cast steel.
  • We carry both threaded and flanged end Check Valves.
  • Both Horizontal-Swing and Inline-Spring-Loaded Check Valves are stocked.
Sizes are Nominal Pipe Size (NPS) - size chart
Check Valve
Help

To start, select size. Follow the green box to refine selections as desired. Click “Lookup Product” any time after selecting size to display products matching criteria entered so far. Fields autofill when only one choice. Or use search box above.

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SWP = Steam Working Pressure WOG = Water, Oil, Gas working pressure Originally the numbers for "Class" (150, 300, 600, etc.) was the working pressure (psig) at the corresponding saturated steam temperature. Ratings today are different because of changes made in materials and design. 
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Threaded valves are for threaded pipe. Socket Weld valves are for plan end pipe. Flanged valves connect to pipe via a flange.
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Material of the body of the valve.
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Domestic = Made in the USA Import = Made anywhere else
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Butterfly valves with lugs connect between two flanges and have threaded inserts so that each flange is bolted to the valve. Butterfly valves with wafers are sandwiched between two flanges, but the valve is not bolted to either flange. Swing Check Valve - the closing disc moves freely, minimizing pressure loss and easing flow. Spring Loaded Inline Check Valve - closing disc held shut by a spring that 'lifts' when there is sufficient pressure on the upstream side of the valve.

Valves » Check
  • Product Name: CV.500 MATCO #530LF BRZ SWING
  • SKU: 145053
  • Weight: .45
  • Class: 150# swp 300# wog
  • End: threaded
  • Material: bronze/lead free
  • Origin: import
  • Size: 0.50
  • Type: horizontal swing

Description:
CHECK VALVE LEAD FREE 150# SWP

Price by Quantity:
1 - 9 = $19.50
10 - 24 = $17.55
25 - 49 = $15.60
50 + = $13.65
Quantity:
+
We show 19 in stock
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All items ship from Houston, TX.

Valves » Check
  • Product Name: CV.750 MATCO #525LF CHECK VLV
  • SKU: 145153
  • Weight: .56
  • Class: 200# wog
  • End: threaded
  • Material: bronze/lead free
  • Origin: import
  • Size: 0.75
  • Type: spring loaded inline check

Description:
SPRING LOADED INLINE LEAD FREE

Price by Quantity:
1 - 9 = $27.50
10 - 24 = $24.75
25 - 49 = $22.00
50 + = $19.25
Quantity:
+
We show 2 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Valves » Check
  • Product Name: CV.750 MATCO #530LF BRZ SWING
  • SKU: 136194
  • Weight: .57
  • Class: 150# swp 300# wog
  • End: threaded
  • Material: bronze/lead free
  • Origin: import
  • Size: 0.75
  • Type: horizontal swing

Description:
CHECK VALVE LEAD FREE 150# SWP

Price by Quantity:
1 - 9 = $35.00
10 - 24 = $31.50
25 - 49 = $28.00
50 + = $24.50
Quantity:
+
We show 2 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Valves » Check
  • Product Name: CV1.00 MATCO #525LF CHECK VLV
  • SKU: 145154
  • Weight: .85
  • Class: 200# wog
  • End: threaded
  • Material: bronze/lead free
  • Origin: import
  • Size: 1.00
  • Type: spring loaded inline check

Description:
SPRING LOADED INLINE LEAD FREE

Price by Quantity:
1 - 9 = $32.55
10 - 24 = $29.30
25 - 49 = $26.04
50 + = $22.79
Quantity:
+
We show 1 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Valves » Check
  • Product Name: CV1.00 MATCO #530LF BRZ SWING
  • SKU: 137204
  • Weight: .88
  • Class: 150# swp 300# wog
  • End: threaded
  • Material: bronze/lead free
  • Origin: import
  • Size: 1.00
  • Type: horizontal swing

Description:
CHECK VALVE LEAD FREE 150# SWP

Price by Quantity:
1 - 9 = $38.75
10 - 24 = $34.88
25 - 49 = $31.00
50 + = $27.13
Quantity:
+
We show 3 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Valves » Check
  • Product Name: CV1.25 MATCO #525LF CHECK VLV
  • SKU: 143712
  • Weight: 1.20
  • Class: 200# wog
  • End: threaded
  • Material: bronze/lead free
  • Origin: import
  • Size: 1.25
  • Type: spring loaded inline check

Description:
SPRING LOADED INLINE LEAD FREE

Price by Quantity:
1 - 9 = $53.01
10 - 24 = $47.71
25 - 49 = $42.41
50 + = $32.86
Quantity:
+
We show 14 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Valves » Check
  • Product Name: CV1.50 MATCO #525LF CHECK VLV
  • SKU: 145156
  • Weight: 2.75
  • Class: 200# wog
  • End: threaded
  • Material: bronze/lead free
  • Origin: import
  • Size: 1.50
  • Type: spring loaded inline check

Description:
SPRING LOADED INLINE LEAD FREE

Price by Quantity:
1 - 9 = $53.95
10 - 24 = $47.96
25 - 49 = $41.96
50 + = $37.17
Quantity:
+
We show 6 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Valves » Check
  • Product Name: CV1.50 MATCO #530LF BRZ SWING
  • SKU: 109824
  • Weight: 1.88
  • Class: 150# swp 300# wog
  • End: threaded
  • Material: bronze/lead free
  • Origin: import
  • Size: 1.50
  • Type: horizontal swing

Description:
CHECK VALVE LEAD FREE 150# SWP

Price by Quantity:
1 - 4 = $59.45
5 - 9 = $52.02
10 - 24 = $46.08
25 + = $43.10
Quantity:
+
We show 4 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Valves » Check
  • Product Name: CV2.00 150# RF FLANGED SWING
  • SKU: 128495
  • Weight: 40.00
  • Class: 150#
  • End: flanged
  • Material: cast steel
  • Origin: import
  • Size: 2.00
  • Type: swing check

Description:
CHECK VLV:CAST STEEL BERIC 301

Price by Quantity:
1 - 4 = $250.00
5 - 9 = $218.75
10 - 24 = $193.75
25 + = $181.88
Quantity:
+
We show 5 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Valves » Check
  • Product Name: CV2.00 MATCO #525LF CHECK VLV
  • SKU: 140641
  • Weight: 2.75
  • Class: 200# wog
  • End: threaded
  • Material: bronze/lead free
  • Origin: import
  • Size: 2.00
  • Type: spring loaded inline check

Description:
SPRING LOADED INLINE LEAD FREE

Price by Quantity:
1 - 4 = $123.75
5 - 9 = $111.38
10 - 24 = $99.00
25 + = $86.63
Quantity:
+
We show 3 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Valves » Check
  • Product Name: CV2.00 MATCO #530LF BRZ SWING
  • SKU: 137205
  • Weight: 2.94
  • Class: 150# swp 300# wog
  • End: threaded
  • Material: bronze/lead free
  • Origin: import
  • Size: 2.00
  • Type: horizontal swing

Description:
CHECK VALVE LEAD FREE 150# SWP

Price by Quantity:
1 - 4 = $101.70
5 - 9 = $88.99
10 - 24 = $78.82
25 + = $73.73
Quantity:
+
We show 0 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Valves » Check
  • Product Name: CV2.50 MATCO #521 BRASS CHECK
  • SKU: 134391
  • Weight: 4.80
  • Class: 125# swp 200#
  • End: threaded
  • Material: brass
  • Origin: import
  • Size: 2.50
  • Type: horizontal swing

Description:
NOT FOR USE WITH POTABLE WATER

Price by Quantity:
1 - 9 = $90.55
10 - 24 = $84.23
25 - 49 = $73.70
50 + = $65.28
Quantity:
+
We show 4 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Valves » Check
  • Product Name: CV2.50 MATCO #530 BRONZE CHECK
  • SKU: 105534
  • Weight: 7.00
  • Class: 150# swp 300# wog
  • End: threaded
  • Material: bronze
  • Origin: import
  • Size: 2.50
  • Type: horizontal swing

Description:
NOT FOR USE WITH POTABLE WATER

Price by Quantity:
1 - 2 = $112.34
3 - 4 = $98.30
5 - 9 = $87.07
10 + = $75.83
Quantity:
+
We show 0 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Valves » Check
  • Product Name: CV3.00 150# RF FLANGED SWING
  • SKU: 148539
  • Weight: 60.00
  • Class: 150#
  • End: flanged
  • Material: cast steel
  • Origin: import
  • Size: 3.00
  • Type: swing check

Description:
CHECK VLV:CAST STEEL BERIC 301

Price by Quantity:
1 - 4 = $504.00
5 - 9 = $441.00
10 - 24 = $390.60
25 + = $346.50
Quantity:
+
We show 0 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Valves » Check
  • Product Name: CV3.00 150# RF FLANGED SWING*
  • SKU: 145273
  • Weight: 60.00
  • Class: 150#
  • End: flanged
  • Material: cast steel
  • Origin: import
  • Size: 3.00
  • Type: swing check

Description:
CHECK:WALWORTH #5341F CAST STL

Price by Quantity:
1 - 4 = $464.00
5 - 9 = $406.00
10 - 24 = $359.60
25 + = $319.00
Quantity:
+
We show 0 in stock
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All items ship from Houston, TX.

Valves » Check
  • Product Name: CV3.00 C&C #CVBR3000 300# CWP
  • SKU: 140044
  • Weight: 6.33
  • Class: 300# wog
  • End: threaded
  • Material: bronze
  • Origin: import
  • Size: 3.00
  • Type: horizontal swing

Description:
NOT FOR USE WITH POTABLE WATER

Price by Quantity:
1 - 4 = $180.80
5 - 9 = $158.20
10 - 14 = $140.12
15 + = $131.08
Quantity:
+
We show 0 in stock
cart-icon

To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Valves » Check
  • Product Name: CV3.00 MATCO #521 BRASS CHECK
  • SKU: 145164
  • Weight: 6.87
  • Class: 125# swp 200#
  • End: threaded
  • Material: brass
  • Origin: import
  • Size: 3.00
  • Type: horizontal swing

Description:
NOT FOR USE WITH POTABLE WATER

Price by Quantity:
1 - 4 = $175.50
5 - 9 = $156.00
10 - 24 = $136.50
25 + = $120.90
Quantity:
+
We show 0 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Valves » Check
  • Product Name: CV3.00 MATCO #530 BRONZE CHECK
  • SKU: 110910
  • Weight: 6.33
  • Class: 150# swp 300# wog
  • End: threaded
  • Material: bronze
  • Origin: import
  • Size: 3.00
  • Type: horizontal swing

Description:
NOT FOR USE WITH POTABLE WATER

Price by Quantity:
1 - 2 = $180.80
3 - 4 = $158.20
5 - 9 = $140.12
10 + = $131.08
Quantity:
+
We show 0 in stock
cart-icon

To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Valves » Check
  • Product Name: CV4.00 150# RF FLANGED SWING
  • SKU: 139054
  • Weight: 100.00
  • Class: 150#
  • End: flanged
  • Material: cast steel
  • Origin: import
  • Size: 4.00
  • Type: swing check

Description:
CHECK VLV:CAST STEEL BERIC 301

Price by Quantity:
1 - 4 = $385.00
5 - 9 = $371.25
10 - 24 = $343.75
25 + = $330.00
Quantity:
+
We show 0 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Note:  This item is shipped via freight.

Valves » Check
  • Product Name: CV4.00 150# RF FLANGED SWING*
  • SKU: 141546
  • Weight: 100.00
  • Class: 150#
  • End: flanged
  • Material: cast steel
  • Origin: import
  • Size: 4.00
  • Type: swing check

Description:
CHECK:WALWORTH #5341F CAST STL

Price by Quantity:
1 - 4 = $424.08
5 - 9 = $371.07
10 - 24 = $328.66
25 + = $291.56
Quantity:
+
We show 0 in stock
cart-icon

To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Note:  This item is shipped via freight.

Valves » Check
  • Product Name: CV4.00 MATCO #530 BRONZE CHECK
  • SKU: 148523
  • Weight: 11.63
  • Class: 300# wog
  • End: threaded
  • Material: bronze
  • Origin: import
  • Size: 4.00
  • Type: horizontal swing

Description:
NOT FOR USE WITH POTABLE WATER

Price by Quantity:
1 - 2 = $269.40
3 - 4 = $235.73
5 - 9 = $208.79
10 + = $185.21
Quantity:
+
We show 0 in stock
cart-icon

To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Note:  This item is shipped via freight.