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335M2, 3/4" Female Pressure Relief Valve
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$47.48 each
In Stock
In Stock
Get 115 Mon, Dec 1
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Product Highlights

Product Highlight: Size
3/4"
Product Highlight: Pressure Set Point
30 psi

Specs

Size:

3/4"

Pressure Set Point:

30 psi

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Product Reviews

4.78 out of 92 reviews
97% would recommend this product
4.78
out of 92 Reviews
97% would recommend this product
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5 star
88%
4 star
8%
3 star
1%
2 star
1%
1 star
2%
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Customer Images

Most Liked Positive Review

New Pressure Relief Valve Arrives Quickly

The 4 year old boiler pressure relief valve (Watts 3/4" M330-M1 30psi 375000 BTU/hr rating) was leaking a little water when the boiler system was at low temperature and normal pressure of about 16 to 18 pounds. This Watts M335-M2, 3/4" Male Pressure Relief Valve, 30psi, 510000 BTU/hr rating, was used to replace the old leaking valve. This new valve stopped the boiler water leak out of the pressure relief valve.
VS

Most Liked Negative Review

Didn't Last

I purchased this relief valve for my boiler back in late 2013 and it worked for just under 29 months. Now it releases pressure at under 10 psi and caused my boiler to shut off. Seems like this valve should have lasted longer. Trying an Apollo brand this time.
Showing 1-10 of 92 reviews

Perfect

Works well and easy to install
GdH
Momma's house
10 months ago
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H yes

Easy installation only took me about 15 minutes
Mike
Manchester pa
1 years ago
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I would buy this product again.

Part was a perfect fit. No issues
John
Ohio
2 years ago
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Great product - great service - would buy again

on my boiler - works great as it should
Old Biker
Maine
2 years ago
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I would buy again

Fit / Worked perfect
FLC
Bozeman, MT
2 years ago
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I would buy the male next time

Quality product, but needed a nipple due to my error in ordering
Bion
Webster, NH
2 years ago
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PRV

AM MUCH MORE COMFORTABLE WITH AN OPERABLE PRESSURE RELIEF VALVE ON MY BOILER!
SPIDER
LANCASTER PA
2 years ago
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Flow control valves

Very informative gave me alternative flow control valves work perfectly was everything that they said they were
56rich
Nj
2 years ago
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I will buy this item again,

This item was perfect. I changed this and my tank so everything is good. Stopped the leaking
Lamar Lucas
Ny
2 years ago
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I would buy this product again!

The pressure relief valve is exactly as described. The product was delivered in a timely fashion. It is functioning as required. I have purchased a number of items from Supply House in the past and all their products have been high quality.
Golfer
Spring Glen, PA
2 years ago
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Product Q&A

5 Questions
5 Questions
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Q: Is this suitable for steam?

Asked by Tyler 7 years ago

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Verified Author and ReplyVerified Reply- Supplyhouse.com Team

Yes, this pressure relief valve is suitable for steam. If you want more specs, please check out this link to Watts' page: https://www.watts.com/products/plumbing-flow-control-solutions/relief-valves/asme-safety-valves/335/m335m2-030-34

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Verified Author and ReplyVerified Reply- Supplyhouse.com Team

Yes, this pressure relief valve is suitable for steam. If you want more specs, please check out this link to Watts' page: https://www.watts.com/products/plumbing-flow-control-solutions/relief-valves/asme-safety-valves/335/m335m2-030-34

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Q: is this pressure valve used on hot water tanks only? Can it be used on Utica furnaces?

Asked by frankie 8 years ago

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Verified Author and ReplyVerified Reply- SupplyHouse Staff

This relief valve has a 30psi setpoint, which is typical for boilers. As long as the BTU capacity meets or exceeds that of the boiler it should work fine.

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Q: My pressure relief valve leak will replace with same will this replacement of a new valve stop the leak

Asked by Boil 9 years ago

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Verified Author and ReplyVerified Reply- SupplyHouse Staff

Typically relief valves will drip or leak when the pressure in the system is nearing, but not reaching the valve set point. If this is the case, the new one would leak as well because there is a problem elsewhere in the system.

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Q: Will this work on a Vaillant oil fired boiler closed hydronic heating system?

Asked by Stasha 10 years ago

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Verified Author and ReplyVerified Reply- SupplyHouse Staff

Yes, so long as the BTU capacity meets or exceeds that required by the boiler manufacturer.

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Q: how do i know if i need the male or the female Watts m335 pressure relief valve?

Asked by Tim the plumbers son 13 years ago

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Verified Author and ReplyVerified Reply- PexSupply Staff

It depends on the piping/threading to which you plan to connect the valve. Male connections would be needed to connect to female threads, etc.

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- charlie

supplyhouse used the same picture to describe both the male and female m335m2 relief valve. it is my opinion that the female would appear to have both female inlet and outlet. The picture shows the male which has a male inlet and female outlet. calling the sales rep when you place the order is normal procedure. happy holidays.

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