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Control Devices - ST25-1A200 ST Series Brass ASME Safety Valve, 200 psi Set Pressure, 1/4" Male NPT

Q: can this relief valve be used to drain water from the air tank

Its' purpose is to relieve pressure - that's what it's designed for.I would not use it to drain water from a tank; it would likely corrode the components and compromise its' effectiveness.You will never find one of these on a compressor at the bottom of the tank - there's a drain there; it's always placed toward the top away from water build up.

Q: Does it release right at 200psi because I have a 200psi pressure switch.

If working properly the safety will blow at 200, if the safety valve psi is lower than the pressure switch set point it will blow before it reaches the set point, so the comp will never shut off, the safety valve should be about 30 lbs more than the pressure switch set point. A 200 psi safety switch is common on a comp set to 165-175 psi.

Q: What is the maximum negative temp that this valve will work with? For example -20c?

I would not trust a $5 relief value without checking with the manufacture first.

Q: if you want to reduce pressure mechanically through the relief valve , do you have to unthread the valve or is there a special action for that?

No, you don't unthread the valve body. You just have to pull on the key ring. A spring keeps the valve closed; at the pressure the valve is rated for, the air pressure overcomes the spring force and allows the valve to open and relieve pressure. Pulling on the key ring hard enough allows you to overcome the spring force and open the valve; when you release the key ring, the spring should immediately close the valve.

معرّف المنتج: 352752063

معاملة آمنة

التفاصيل

Material
Brass
Brand
Control
Item dimensions L x W x H
12.7 x 2.5 x
Exterior finish
Stainless
Inlet connection size
0.25 inches
Inlet connection type
National Pipe

🔥250°F max operating temperature

🔩1/4" male NPT threaded brass inlet

⚙️200 psi precision relief pressure

يُشترى معًا بشكل متكرر

Control Devices - ST25-1A200 ST Series Brass ASME Safety Valve, 200 psi Set Pressure, 1/4" Male NPT

Performance Tool W10055 0-200 PSI Air Gauge for Air Tank Accessory

Ingersoll-Rand Ingersoll Rand 23474653 Pressure Switch for Single Phase Compressor

الوصف

🛡️ Safety that’s built to last — don’t let pressure catch you off guard!

OPTIMIZED FLOW CAPACITY - 178 CFM flow rate supports efficient pressure relief in low capacity applications.
CERTIFIED SAFETY ASSURANCE - ASME safety rated with UV and NB marks guarantees compliance and peace of mind.
PRECISION PRESSURE CONTROL - Preset relief pressure at 200 psi with ±3% accuracy ensures reliable system safety.
ROBUST CORROSION RESISTANCE - Durable brass body and stainless steel spring withstand harsh environments and extend valve life.
HIGH TEMPERATURE PERFORMANCE - Operates seamlessly up to 250°F, perfect for demanding industrial and home compressor setups.

The Control Devices ST25-1A200 is a brass ASME-certified safety valve designed for precise pressure relief at 200 psi. Featuring a 1/4" male NPT threaded inlet, stainless steel spring, and corrosion-resistant materials, it operates reliably up to 250°F with a 178 CFM flow rate. Ideal for air compressors and industrial applications, it meets rigorous safety standards with UV and NB certifications.

المواصفات

Manufacturer	Control Devices
Part number	ST25-1A200
Item Weight	45 g
Product Dimensions	12.7 x 2.54 x 2.54 cm; 45 g
Item model number	ST25-1A200
Size	0.25 Inch
Colour	Original Version
Style	Threaded
Material	Brass
Item Package Quantity	1
Flow rate	178 Cubic Feet Per Minute
Measurement System	Inch
Specification met	certification
Included components	Safety Valve
Batteries Required?	No

لديك سؤال؟ انظر ماذا طلب الآخرون

can this relief valve be used to drain water from the air tank

Does it release right at 200psi because I have a 200psi pressure switch.

What is the maximum negative temp that this valve will work with? For example -20c?

if you want to reduce pressure mechanically through the relief valve , do you have to unthread the valve or is there a special action for that?

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