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3230 Series
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| Model |
Inlet Connection |
Outlet Connection |
Orifice Dia. |
Length |
Outside Dia. |
| 3230-G |
1 ½” FNPT |
1 ½”MNPT |
0.80 |
3 3/5” |
2 3/8”Hex |
| 3230-I |
2” FNPT |
2” MNPT |
1.10 |
4 ¾” |
2 7/8”Hex |
| 3230-K |
3” FNPT |
3” MNPT |
1.65 |
6 7/8” |
4” Hex |
| 3230-L |
4” FNPT |
4” MNPT |
2.20 |
8 ½” |
5 ½” Rnd |
3230 Series Back Pressure Check Valves are designed for use in liquid or vapor service for bulk storage tanks where flow is desired in only one direction. The 3230 Series has female NPT connections on the inlet side and male NPT connections on the outlet side. These valves can also be used as a vacuum breaker or low-pressure relief device.
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3240 Series
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| Model |
Inlet Connection |
Outlet Connection |
Orifice Dia. |
Length |
Outside Dia. |
| 3240-G |
1 ½” MNPT |
1 ½”FNPT |
0.80 |
3 3/5” |
2 3/8”Hex |
| 3240-I |
2” MNPT |
2” FNPT |
1.10 |
4 ¾” |
2 7/8”Hex |
| 3240-K |
3” MNPT |
3” FNPT |
1.65 |
6 7/8” |
4” Hex |
| 3240-L |
4” MNPT |
4” FNPT |
2.20 |
8 ½” |
5 ½” Rnd |
3240 Series Back Pressure Check Valves are designed for use in liquid or vapor service for bulk storage tanks where flow is desired in only one direction. 3240 Series has male NPT connections on the inlet side and female NPT connections on the outlet side. These valves can also be used as a vacuum breaker or low-pressure relief device.
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Download Product Specification Sheet
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3250 Series
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| Model |
Inlet Connection |
Outlet Connection |
Orifice Dia. |
Length |
Outside Dia. |
| 3250-G |
1 ½” FNPT |
1 ½”MNPT |
0.80 |
3 3/5” |
2 3/8”Hex |
| 3250-I |
2” FNPT |
2” MNPT |
1.10 |
4 ¾” |
2 7/8”Hex |
| 3250-K |
3” FNPT |
3” MNPT |
1.65 |
6 7/8” |
4” Hex |
| 3250-L |
4” FNPT |
4” MNPT |
2.20 |
8 ½” |
5 ½” Rnd |
3250 Series Back Pressure Check Valves are designed for use in liquid or vapor service for bulk storage tanks where flow is desired in only one direction. The 3250 Series has female NPT connections on the inlet side and female NPT connections on the outlet side. These valves can also be used as a vacuum breaker or low-pressure relief device.
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Download Product Specification Sheet
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3260 Series
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| Model |
Inlet Connection |
Outlet Connection |
Orifice Dia. |
Length |
Outside Dia. |
| 3260-G |
1 ½” MNPT |
1 ½”FNPT |
0.80 |
3 3/5” |
2 3/8”Hex |
| 3260-I |
2” MNPT |
2” FNPT |
1.10 |
4 ¾” |
2 7/8”Hex |
| 3260-K |
3” MNPT |
3” FNPT |
1.65 |
6 7/8” |
4” Hex |
| 3260-L |
4” MNPT |
4” FNPT |
2.20 |
8 ½” |
5 ½” Rnd |
3260 Series Back Pressure Check Valves are designed for use in liquid or vapor service for bulk storage tanks where flow is desired in only one direction. 3260 Series has male NPT connections on the inlet side and male NPT connections on the outlet side. These valves can also be used as a vacuum breaker or low-pressure relief device.
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4915 Series
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| Size |
ASA Rating |
A
Dia. |
B |
B |
D
Dia. |
| 1” |
150# & 300# |
1.0 |
¼” |
.358 |
2” |
| 1 ½” |
150# & 300# |
1.570 |
¼” |
.437 |
2 7/8” |
| 2” |
150# & 300# |
2.005 |
¼” |
.488 |
3 5/8” |
| 3” |
150# & 300# |
3.006 |
5/16” |
.726 |
5” |
| 4” |
150# & 300# |
3.964 |
3/8” |
1.055 |
6 3/16” |
| 6” |
150# & 300# |
6.003 |
3/8” |
1.512 |
8 ½” |
| 8” |
150# & 300# |
7.919 |
½” |
2.262 |
10 5/8” |
| 10” |
150# & 300# |
9.958 |
½” |
2.988 |
12 ¾” |
| 12” |
150# & 300# |
11.976 |
½” |
3.430 |
15” |
| 14” |
150# & 300# |
13.062 |
½” |
3.563 |
16 ¼” |
| 16” |
150# & 300# |
14.938 |
9/16” |
3.876 |
18 ½” |
| 18” |
150# & 300# |
16.814 |
5/8” |
4.113 |
21” |
| 20” |
150# & 300# |
18.750 |
11/16” |
4.250 |
23” |
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Model 4915 Vent Valve can be used as check valve, vacuum breaker or a low-pressure relief valve. These valves are lightweight and are designed to easily insert between flanges. Minimum settings are 2 ounces for both vacuum and pressure.
- Vacuum relief or pressure relief
- Soft seat standard with a wide range of elastomers available
- Metal seats available for high temp applicatations
- Sizes range from 1” to 20”
- Constructed to give long lasting service
- Lightweight construction makes for easy installation
- Available in carbon steel or 316 stainless steel
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4925 Series
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Nom.
Pipe Size |
A |
Hex Size
B |
C |
D |
| 1/2 |
2 11/32” |
7/8 |
1.016 |
1/2 |
| 3/4 |
2 11/32” |
1 1/8 |
1.016 |
3/4 |
| 1 |
3” |
1 3/8 |
1.297 |
1 |
| 1 1/4 |
3” |
1 3/4 |
1.297 |
1 1/4 |
| 1 1/2 |
3” |
2 |
1.297 |
1 1/2 |
| 2 |
3” |
2 1/2 |
1.297 |
2 |
| 3 |
3 7/8” |
3 1/2 |
1.688 |
3 |
Model 4925 Spring-Flo Vent Valve is designed as a pressure or a vacuum vent valve. The minimum settings are 2 ounces for pressure and 2 ounces for vacuum.
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- Vacuum relief only
- Pressure relief only
- Soft seat materials available with a wide range of elastomers to choose from
- Metal to metal seats available
- ½” NPT to 3” NPT threads
- Heavily constructed giving long lasting service
- Available in carbon steel or stainless steel.
- Other materials available upon request
Download Product Specification Sheet
Download Technical Information Inquiry Form
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