300 Series, Noiseless
Rubber Poppet
 Strataflo 300 Series check valves contain a rubber poppet, designed for noiseless operation. The rubber poppets are fully-formed around a solid steel insert. Varying types of rubber can be used, depending on the application. This is the most durable poppet solution available in the market. We do not use O-Rings.
The one-piece body is cast brass. A sensitive spring allows this valve to be used in any position. Cracking pressure is approximately 1 lb., not adjustable. Other cracking pressure available. Working pressure 200 lbs. Maximum temperature of 225°F. |
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| No. 300: Buna-S Rubber Poppet for General Purpose Applications |
The No. 300 contains a silicone treated Buna-S rubber poppet on a stainless steel stem, designed to open easily and be more durable than O-rings. Being flexible, they cannot leak. Used as an all purpose check valve for multiple applications, including cold water, ethylene and glycol.
| 300 Series Pricing Information |
| 3/8" |
1/2" |
3/4" |
1" |
1-1/4" |
1-1/2" |
2" |
2-1/2" |
3"F * |
3"M ** |
| $29.72 |
$29.72 |
$28.24 |
$37.68 |
$44.08 |
$57.96 |
$90.70 |
$206.00 |
$420.48 |
$224.32 |
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| No. 375: Buna-N Rubber Poppet for Gas and Oil Applications |
The Buna-N rubber poppet is molded to a stainless steel stem, with all other internal parts also made of stainless steel. Used for gas and oil applications, including gasoline, hydraulic fluids, diesel fuel, alcohol, kerosene, and mineral oil.
| 375 Series Pricing Information |
| 3/8" |
1/2" |
3/4" |
1" |
1-1/4" |
1-1/2" |
2" |
2-1/2" |
3"F * |
3"M ** |
| $29.72 |
$29.72 |
$29.90 |
$40.26 |
$48.12 |
$66.66 |
$103.41 |
$218.26 |
$420.48 |
$236.40 |
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| No. 385: EPD Rubber Poppet for Chemical and Detergent Applications |
An EPD poppet is attached to a stainless steel stem, with all other internal parts also made of stainless steel. Used for chemical and detergent applications, also including animal and vegetable oils, brake fluid, ketones, ozone & oxidizing chemicals, ammonia, and salt water.
| 385 Series Pricing Information |
| 3/8" |
1/2" |
3/4" |
1" |
1-1/4" |
1-1/2" |
2" |
2-1/2" |
3"F * |
3"M ** |
| $29.72 |
$29.72 |
$30.48 |
$39.34 |
$48.12 |
$66.66 |
$103.41 |
$218.26 |
$420.48 |
$236.40 |
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| No. 395: Viton Rubber Poppet for Higher Temps, Fuels, Oils, & Chemicals |
A Viton poppet is attached to a stainless steel stem, with all other internal parts also made of stainless steel. Used for higher temperature applications, providing excellent resistance to fuels and chemicals. Also designed for use in food and beverage applications with the No. 2300. Maximum operating temperature of 300°F. Not for steam use.
| 395 Series Pricing Information |
| 3/8" |
1/2" |
3/4" |
1" |
1-1/4" |
1-1/2" |
2" |
2-1/2" |
3"F * |
3"M ** |
| $30.72 |
$30.72 |
$34.02 |
$47.20 |
$55.54 |
$68.76 |
$103.44 |
$242.00 |
$456.48 |
$260.00 |
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| No. F300: Lead-Free Series |
 Now offering our same high quality valves with lead-free materials, certified by NSF to contain less than 0.25% lead by weighted average. The lead-free series is compliant with California AB1953 and Vermont Act 193. The lead-free line comes standard with a Buna-S rubber poppet, an extremely durable compound for use with potable drinking water. All other internal components of stainless steel. Optional rubber poppets are available in Buna-N and EPD upon request.
| 300 F-Series (Lead-Free) Pricing Information |
| 1/2" |
3/4" |
1" |
1-1/4" |
1-1/2" |
2" |
2-1/2" |
3"F * |
3"M ** |
| $33.64 |
$32.82 |
$44.76 |
$50.98 |
$70.58 |
$111.98 |
$233.10 |
$470.48 |
$251.42 |
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| 300 Series Specifications
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Pipe
Size |
300
Series
Part # |
375
Series
Part # |
385
Series
Part # |
395
Series
Part # |
Overall Length |
Valve
Diameter |
Valve
Weight |
Flow
Factor
CV |
| 3/8" |
300-038 |
375-038 |
385-038 |
395-038 |
2.63" |
1.16" |
0.50 lb |
1.8 |
| 1/2" |
300-050 |
375-050 |
385-050 |
395-050 |
2.69" |
1.40" |
0.60 lb |
2.6 |
| 3/4" |
300-075 |
375-075 |
385-075 |
395-075 |
3.31" |
1.62" |
0.90 lb |
5.4 |
| 1" |
300-100 |
375-100 |
385-100 |
395-100 |
3.69" |
2.00" |
1.25 lb |
8.2 |
| 1-1/4" |
300-125 |
375-125 |
385-125 |
395-125 |
4.57" |
2.41" |
2.00 lb |
16.7 |
| 1-1/2" |
300-150 |
375-150 |
385-150 |
395-150 |
4.88" |
2.69" |
2.45 lb |
32.2 |
| 2" |
300-200 |
375-200 |
385-200 |
395-200 |
5.56" |
3.34" |
3.90 lb |
51.6 |
| 2-1/2" |
300-250 |
375-250 |
385-250 |
395-250 |
6.79" |
3.81" |
7.15 lb |
68.5 |
| *3" |
300-300-F |
375-300-F |
385-300-F |
395-300-F |
7.40" |
4.71" |
11.80 lb |
185.0 |
| **3" |
300-300 |
375-300 |
385-300 |
395-300 |
6.79" |
3.81" |
6.60 lb |
68.5 |
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