Global one-stop procurement platform for industrial spare parts.
support01@okmarts.com service@okmarts.com hydraulic@okmarts.com
Okmarts.com Online Store, Refrigeration Compressor Price, O&Kmarts Logo
Max 200 characters
Display the website inEN
EN
translate to EN
EN
translate to ES
ES
translate to العربية
العربية
All
Siemens
Siemens
  • HMI
    HMI
  • Light Curtain
    Light Curtain
  • VFD
    VFD
  • Soft Starter
    Soft Starter
  • Transmitter
    Transmitter
  • Transformer
    Transformer
  • Sensor
    Sensor
  • Gearbox
    Gearbox
  • Circuit Breaker
    Circuit Breaker
  • Power Supply
    Power Supply
  • PLC
    PLC
  • Contactor
    Contactor
  • Flame Detector
    Flame Detector
  • Expansion Valve
    Expansion Valve
  • Combustion Controller
    Combustion Controller
  • Fuse
    Fuse
  • Temperature Controller
    Temperature Controller
  • Module
    Module
  • Resistor
    Resistor
  • Battery
    Battery
  • Switch
    Switch
  • Memory Cards & Readers
    Memory Cards & Readers
  • Fan
    Fan
SAACKE
SAACKE
  • Flame Detector
    Flame Detector
Durag
Durag
  • Flame Detector
    Flame Detector
Eclipse
Eclipse
  • Flame Detector
    Flame Detector
  • Combustion Controller
    Combustion Controller
Fireye
Fireye
  • Flame Detector
    Flame Detector
  • Combustion Controller
    Combustion Controller
HAMAMATSU
HAMAMATSU
  • Flame Detector
    Flame Detector
All Brands
All Brands
    • a
    • b
    • c
    • d
    • e
    • f
    • g
    • h
    • i
    • j
    • k
    • l
    • m
    • n
    • o
    • p
    • q
    • r
    • s
    • t
    • u
    • v
    • w
    • x
    • y
    • z
    • 3
    • 7
      Top Picks
      • Siemens Flame Detector QRA4M.U
      1/1
      Siemens Flame Detector QRA4M.U
      $ 892 .50

      ✔ In Stock (Can ship in 5-7 days)

      Quantity
      MOQ : 1
      Payment Methods
      T/T pay VISA pay mastercard pay Diners Club pay Discover pay JCB pay American Express pay Stripe pay PayPal pay Google pay Apple pay Link pay venmo pay
      • Online Support 24/7

      • 12 Months Warranty for New Products

      • 30 Days Money Back Guarantee

      • Specifications
      • Q&A
      • Reviews
      With this type of flame supervision, the UV radiation emitted by gas or oil flames is used to generate the flame signal. The radiation detector is a UV-sensitive cell with 2 electrodes, which ignite when illuminated with radiation in the 190...270 nm range of the spectrum, thereby triggering a current in the flame detector circuit. The UV cell does not respond to glowing firebrick in the combustion chamber or to daylight.

      Ask questions

      (0/1,200)

      Max 1200 characters

      • Q: How can I track my order?

        A: Once your order is shipped, you will receive a confirmation email with tracking information. You can use this information to track your order through the logistics provider's website.

      • Q: How can I apply for a purchase invoice?

        A: On the checkout page, you can select the option for an invoice and fill in the relevant invoice information. We will provide you with the corresponding invoice according to your request.

      • Q: What should I do if a product is lost or damaged during shipping?

        A: We purchase shipping insurance for every order to ensure the safety of the products during transportation. If the products are lost or damaged, please contact our customer service team promptly. We will assist you in resolving the issue and provide appropriate compensation.

      View More
      Question has been sent successfully

      Reviews

      • J

        JAMES HAGADORN

        Jan 18, 2026

        Siemens Flame Detector QRA4M.U
        Simple to find my way.
        Helpful
        Unhelpful
      • T

        Tom Pankow

        Oct 11, 2025

        Siemens Flame Detector QRA4M.U
        Absolutely! Thank you! I couldn’t find it at Lowe's or Home Depot.
        Helpful
        Unhelpful
      • J

        Joseph Nichols

        Mar 15, 2025

        Siemens Flame Detector QRA4M.U
        I'd like to get this order delivered as soon as possible, is next-day air an option?
        Helpful
        Unhelpful
      • J

        Jeff Branneky

        Jul 20, 2023

        Siemens Flame Detector QRA4M.U
        change your survey to not require comment....ask a question if you have one
        Helpful
        Unhelpful
      • A

        Anonymous user

        Nov 25, 2022

        Siemens Flame Detector QRA4M.U
        All was ok! No problems whatsoever.
        Helpful
        Unhelpful

      Siemens Flame Detector QRA4M.U

      $ 892 .50
      Click here to view shipping costs.

      ✔ In Stock (Can ship in 5-7 days)

      Quantity
      MOQ : 1
      Payment Methods
      T/T pay VISA pay mastercard pay Diners Club pay Discover pay JCB pay American Express pay Stripe pay PayPal pay Google pay Apple pay Link pay venmo pay
      • Online Support 24/7

      • 12 Months Warranty for New Products

      • 30 Days Money Back Guarantee

      People who bought this item also viewed

      New In stock for sale, Panasonic Servo Motor MHMF022L1V2M

      Panasonic Servo Motor MHMF022L1V2M

      US$653.85
      New In stock for sale, Honeywell Solenoid Valve VE4025B1045

      Honeywell Solenoid Valve VE4025B1045

      US$334.62
      New In stock for sale, ROTEN Mechanical Seal 8E5K-22-X

      ROTEN Mechanical Seal 8E5K-22-X

      US$384.62
      New In stock for sale, NACHI Bearing 6815NSE

      NACHI Bearing 6815NSE

      US$33.81
      New In stock for sale, SKF Bearing AXK 75100

      SKF Bearing AXK 75100

      US$13.08
      New In stock for sale, TOKIMEC Vane Pump F3-V-104-C-10-S-JA-S36-J

      TOKIMEC Vane Pump F3-V-104-C-10-S-JA-S36-J

      Contact Us
      New In stock for sale, SHAN GIN Tool for Metal Cutting KIGMR-S20Q S25R-3T07

      SHAN GIN Tool for Metal Cutting KIGMR-S20Q S25R-3T07

      US$88.46
      New In stock for sale, Danfoss Transmitter 075G4050

      Danfoss Transmitter 075G4050

      Contact Us
      New In stock for sale, TOPO Tool for Metal Cutting Pilot drill 6x120° TIN

      TOPO Tool for Metal Cutting Pilot drill 6x120° TIN

      US$5.58
      New In stock for sale, Sanyo Compressor C-SC603H8B

      Sanyo Compressor C-SC603H8B

      US$1338.03
      New In stock for sale, Delta Servo Motor ECMA-C10810RX

      Delta Servo Motor ECMA-C10810RX

      Contact Us

      Customers frequently viewed

      New In stock for sale, IWAYA DENKI Water Pump 25CJT0752

      IWAYA DENKI Water Pump 25CJT0752

      US$2307.69
      New In stock for sale, Panasonic Servo Motor MHMF022L1V2M

      Panasonic Servo Motor MHMF022L1V2M

      US$653.85
      New In stock for sale, Honeywell Solenoid Valve VE4025B1045

      Honeywell Solenoid Valve VE4025B1045

      US$334.62
      New In stock for sale, ROTEN Mechanical Seal 8E5K-22-X

      ROTEN Mechanical Seal 8E5K-22-X

      US$384.62
      New In stock for sale, SANDSUN Overload Pump VA08H-760

      SANDSUN Overload Pump VA08H-760

      US$1568.40
      New In stock for sale, GS Battery 6-QW-60(450)-(55D23L-KR)

      GS Battery 6-QW-60(450)-(55D23L-KR)

      US$646.15
      New In stock for sale, Rechi Compressor 44R273A

      Rechi Compressor 44R273A

      US$341.00
      New In stock for sale, Bosch Rexroth Linear Guideway Runner Block R165381920

      Bosch Rexroth Linear Guideway Runner Block R165381920

      US$107.69
      New In stock for sale, MINDMAN Air Cylinder MCQV2-11-40-200

      MINDMAN Air Cylinder MCQV2-11-40-200

      US$88.46
      New In stock for sale, Mitsubishi Compressor YB645WTG

      Mitsubishi Compressor YB645WTG

      US$549.00
      New In stock for sale, Delta PLC HostDVP32EC00T3

      Delta PLC HostDVP32EC00T3

      US$3257.69
      New In stock for sale, ULVAC Vacuum Pump PMB1200DT-MA9J1R4I4XX

      ULVAC Vacuum Pump PMB1200DT-MA9J1R4I4XX

      Contact Us
      New In stock for sale, YAMATAKE/Azbil Transmitter KDP72-173410215B2

      YAMATAKE/Azbil Transmitter KDP72-173410215B2

      Contact Us
      New In stock for sale, Copeland Compressor ZRD125KCE-TFV-250

      Copeland Compressor ZRD125KCE-TFV-250

      Contact Us
      New In stock for sale, Copeland Compressor QR90K1-TWE-521

      Copeland Compressor QR90K1-TWE-521

      Contact Us
      New In stock for sale, Brecoflex Belt 16T10/930

      Brecoflex Belt 16T10/930

      US$1025.25
      New In stock for sale, Panasonic Battery LC-P1238APG

      Panasonic Battery LC-P1238APG

      US$378.55
      New In stock for sale, NXP IC Integrated Circuit LPC2368FBD100

      NXP IC Integrated Circuit LPC2368FBD100

      US$28.75
      New In stock for sale, KOGANEI Air Cylinder DAC10X10-A

      KOGANEI Air Cylinder DAC10X10-A

      Contact Us
      New In stock for sale, ASCO Proportional Valve 614357G7011V3

      ASCO Proportional Valve 614357G7011V3

      Contact Us

      Recent related posts

      Types of EGR Valves with Working Principle Diagrams

      11/21/2024

      Types of EGR Valves with Working Principle Diagrams

      The EGR (Exhaust Gas Recirculation) valve is a device used to reduce diesel engine emissions. It can send part of the exhaust gas back into the intake passage, thereby reducing the generation of nitrogen oxides (NOx).

      Can the bus and subway have air-conditioning Shanghai expert It can be used normally, and it must be ventilated and clean

      08/25/2020

      Can the bus and subway have air-conditioning Shanghai expert It can be used normally, and it must be ventilated and clean

      On the afternoon of May 8, Wu Huanyu, director and chief physician of the Shanghai Center for Disease Control and Prevention, said that as the temperature gradually rises, the city's commercial buildings, large shopping malls

      The principle characteristics of air conditioner remote controller

      06/18/2020

      The principle characteristics of air conditioner remote controller

      The principle characteristics of air conditioner remote controller With the gradual improvement of home furnishing, people's requirements for home furnishing are becoming higher and higher. Smart home air conditioner remote controllers are currently becoming the first choice on the market, but consumers are not clear about the air conditioner remote controllers. In fact, this product is also new, so it is normal for many people not to understand it, but everyone must learn how to understand it, that is to come to this website to read the editor's article, today I will introduce you to the air conditioning remote controller.

      How much do you know about water source heat pump

      08/19/2020

      How much do you know about water source heat pump

      1. What is a water source heat pump system?    water source heat pump is a high-efficiency, energy-saving, environmentally friendly and safe central air-conditioning system that extracts heat from the water for building heating.

      How to Test a Wheel Speed Sensor?

      01/23/2025

      How to Test a Wheel Speed Sensor?

      The wheel speed sensor is used to test the wheel speed of a car. For modern vehicles, wheel speed is essential.

      Compressor

      06/14/2020

      Compressor

      Compressor: It is the heart of refrigeration and heating cycles.

      The main reason for the slow heating of air conditioners

      06/20/2020

      The main reason for the slow heating of air conditioners

      There are several reasons for the slow heating of air conditioners:    The dirt of the transpiration device and the condenser is too thick, which will cause air flow blockage, affect the heat declaration, and make the air conditioning heating a big discount. The filter is not cleaned for a long time<img src="{{media url=&quot;The_main_reason_for_the_slow_heating_of_air_conditioners.jpg&quot;}}" alt="" />

      Don't understand the compressor It's enough to see these

      01/10/2021

      Don't understand the compressor It's enough to see these

      Don't understand the compressor It's enough to see these Many people say that buying an air conditioner means buying a compressor. This is true. Simply put, the quality and life of the compressor determine the attitude of most people to buy. So what are 器2䀀ᅵ皥䖒皦즠Ʋ㎄ᰙ㲈Ʋ䌁皦ᮔDž༬皧㎎ᰙЀ呄ᠾ鹨់༹皧ࠄ00령ꐱ댁珵뛐珵Љ䕄ྦ￿￿뤂ᐱ뚜珵

      What to Do If the Refrigerator Compressor is Hot: A Comprehensive Guide

      01/21/2025

      What to Do If the Refrigerator Compressor is Hot: A Comprehensive Guide

      The compressor is an essential component of your refrigerator's cooling system, responsible for circulating refrigerant to cool the fridge.

      Technical status and development trend of refrigeration and air-conditioning compressors

      06/14/2020

      Technical status and development trend of refrigeration and air-conditioning compressors

      Refrigeration machinery and air conditioning equipment play a very important role in the development of the national economy, the improvement of people's lives and the support of national defense equipment.

      • Welcome to O&Kmarts

        Is there anything we can help?

        Email us
      • Feedback

      Join in

      Join in to enjoy exclusive discounts and give you greater discounts

      See More About O&Kmarts Member
      Sign up now

      Common Problem

      Payment Methods
      Shipping Guide
      Sales and Refund Policy
      FAQs

      About O&Kmarts

      About Us
      Membership

      Website Terms

      Privacy Policy
      Terms Of Use
      Bidding Agreement
      Review Rules

      Customer Service

      support01@okmarts.com
      service@okmarts.com
      hydraulic@okmarts.com
      +86-28-84166335
      GMT+08:00 Mon-Fri, 9:00 AM-7:00 PM
      Customer Feedback

      POPULAR PRODUCTS :

      SAACKE Flame Detector Honeywell Flame Detector HAMAMATSU Flame Detector Durag Flame Detector Fireye Flame Detector Siemens Flame Detector Eclipse Flame Detector 25CJT0752 MHMF022L1V2M VE4025B1045 8E5K-22-X VA08H-760 2k28c225dua 9GT0624P4G001 ADDA AD0424XB-B51DS AUB0912VH CAE9450Z CKD 4F210-08-B-AC100V CKD 4GA229-C6-E2-3 Copeland RRG4-0100-PAV-200 Daikin JT160BC-YE Danfoss SM185S4CC e50s8 8000 6 l 5 jiaxipera ZBH1122CY Panasonic DD57C12GAX6 (RSIR) Panasonic DG77C14RAW5 (RSCR) Parker PVACRES-N3511 Parker U133V5595-492310C2 Rexroth 5610141530 RS5570EAS11 sh105a4alc Toshiba SE30E1M-9

      Disclaimer: All brand names, model or type numbers or marks listed on the website are owned by their respective manufacturers. These terms are used for identification purposes only and are not intended to indicate affiliation with OEM companies. Product pictures shown on the website are for illustrative purposes only and the actual item may vary in design, specification, etc. Confirm at the time of purchase if you are unsure.

      © eCommerce. 2017-2025. All Rights Reserved
      © eCommerce. 2017-2025. All Rights Reserved
      Press and drag the mouse to start taking a screenshot