Products

Relief and Safety Valves

We have a lineup of all 5 series (TR, TRK, TRS, TRV, TRR), and we will select according to the capacity and specifications of the tank.

If you want to use a pressure other than the standard pressure, you can optionally set the desired pressure.

This valve automatically opens and releases pressure when the pressure in the tank increases abnormally.
It is an indispensable part for the safe use of pressurized tanks and pressure vessels, and can prevent accidents in the unlikely event that a large pressure is applied to the tank.
Since the body material is stainless steel, it has excellent corrosion resistance and chemical resistance, making it ideal for installation in stainless steel tanks.
We also offer models that can be used for regulatory tanks.

TRK Series

Safety valve for medium-large capacity tanks.
Three sizes are available, and you can choose according to the size and pressure of the tank.
The large air flow path diameter allows the pressure to be released instantly.
It can also be used for regulatory tanks such as “Class II pressure vessel” and “small pressure vessel”.
Operation check (inspection) is easy because it has a handle for manual opening and closing. Since the handle is detachable, it can be removed and used except during inspection.

TKR15	TKR20	TKR25

Model	Blowing pressure	Mounting size	Applicable tank size (approximate)*	Body material (gas contact part)	Seal Material
TRK15-01	0.1～0.15MPa	Rc1/2	100～500L	SCS13A/SUS316 (spring: SUS304)	SCS13A (Metal Seal)
TRK15-02	0.19～0.24MPa
TRK20-01	0.1～0.15MPa	Rc3/4	200～1000L
TRK20-02	0.19～0.24MPa
TRK25-01	0.1～0.15MPa	Rc1	500L or more
TRK25-02	0.19～0.24MPa

Optionally, you can set the desired starting pressure. (We can also handle Class II pressure vessels and small pressure vessels.)

Set pressure range: 0.02~0.99MPa (pressure tolerance: ±5% of set pressure, minimum ±0.025MPa)
Set pressure unit: Set in 0.01MPa increments

*Compatible tank sizes are approximate. We will select the most suitable series according to the diameter, shape, and specifications of the lid.

TRS Series

This is a relief valve for small ~ medium tanks.
The body material is all stainless steel, so it is resistant to corrosion, and it is very suitable for clean environments such as the pharmaceutical and medical industries.
Although it has a small body, it can exhaust high capacity.
Since it can be opened and closed simply by pulling the hanging ring, operation can be easily checked (inspected).

Model	Blowing pressure	Mounting size	Applicable tank size (approximate)*	Body material (gas contact part)	Seal Material
TRS10-01	0.1～0.15MPa	R3/8	40～200L	SCS13A/SUS316 (spring: SUS304)	SCS13A (Metal Seal)
TRS10-02	0.19～0.24MPa	R3/8	40～200L	SCS13A/SUS316 (spring: SUS304)	SCS13A (Metal Seal)

Optionally, you can set the desired starting pressure. (We can also handle Class II pressure vessels and small pressure vessels.)

Set pressure range: 0.02~0.99MPa (pressure tolerance: ±5% of set pressure, minimum ±0.025MPa)
Set pressure unit: Set in 0.01MPa increments

*Compatible tank sizes are approximate. We will select the most suitable series according to the diameter, shape, and specifications of the lid.

TR Series

This is a relief valve for small tanks.
The body material of the gas contact part is stainless steel SUS316.
Since FFKM is used as the sealing material, it has excellent corrosion and chemical resistance.
Four types of set pressures are available as standard.

Model	Blowing pressure (*)	Mounting size	Applicable tank size (approximate)*	Body material (gas contact part)	Seal Material
TR202P	0.19～0.21MPa	R1/4	Less than 40L	SUS316	FFKM
TR203P	0.27～0.33MPa
TR205P	0.49～0.54MPa
TR207P	0.67～0.73MPa

Optionally, you can set the desired starting pressure.

Set pressure range: 0.1~0.99MPa
Set pressure unit: Set in 0.01MPa increments

* The blowing start pressure is the pressure at the time of manufacture. Due to the effects of the adhesion of the O-ring due to aging, changes in the load of the spring, etc., the starting pressure may change.

*Compatible tank sizes are approximate. We will select the most suitable series according to the diameter, shape, and specifications of the lid.

TRV Series

This is a relief valve for small tanks.
There are two types of body materials: stainless steel SUS316 [S type], which has strong corrosion resistance, and low-cost brass [B type].
As standard, we have a lineup of four types of set pressures.
Since the mounting size is as small as R1/8, it can be installed even with lids of small diameter.

Model	Blowing pressure (*)	Mounting size	Applicable tank size (approximate)*	Body material (gas contact part)	Seal Material
[Body material: stainless steel]
TRV-S107	0.64～0.70MPa	R1/8	Less than 20L	SUS316	FFKM
TRV-S105	0.49～0.55MPa
TRV-S103	0.24～0.30MPa
TRV-S102	0.19～0.25MPa
[Body Material: Brass]
TRV-B107	0.64～0.70MPa	R1/8	Less than 20L	Brass nickel plated	FFKM
TRV-B105	0.49～0.55MPa
TRV-B103	0.24～0.30MPa
TRV-B102	0.19～0.25MPa

Optionally, you can set the desired starting pressure.

Set pressure range: 0.03~0.99MPa
Set pressure unit: Set in 0.01MPa increments

*Compatible tank sizes are approximate. We will select the most suitable series according to the diameter, shape, and specifications of the lid.

TRR Series

This is a relief valve for small tanks.
Since the starting pressure can be changed, it can be used universally.
The material of the gas contact part is stainless steel SUS316, and the sealing material is fluorocarbon, so it has excellent corrosion resistance and chemical resistance.

Model	Blowing pressure (*)	Mounting size	Applicable tank size (approximate)*	Body material (gas contact part)	Seal Material
TRR100	0.18～0.20MPa	R1/4	Less than 20L	SUS316	Fluorocarbons
TRR200	0.45～0.50MPa	R1/4	Less than 20L	SUS316	Fluorocarbons