Why choose us

Production Equipment

Equipped with 100 sets of full machine tools, 60 sets of semi-automatic CNC machines, 5 sets of inspection equipment.

Our Certificate

Yijia Machinery has passed IATF 16949:2016 system certification,ISO 9001 & ISO 14001 system certification,DOT, AMECA product certification.

OEM

You can find all the OEM numbers you are looking for on our product detail pages.

 

Product Application

Specialized in customized brass fittings, products meet SAE, DOT, ASTM standards, threads have NPTFNPTUNS UNEF BSPT, etc., brass material C36000, lead-free copper.

 

Part#

Male Pipe

Dustry Numb

A

Hex

PARKER

MAF

GATES

Tectran

Fairview

XJ56084*

1/4

6788

1.56

0.56

DC606-4

46084*

G33831-0004

239-B

239-B

 

 
 
Functions
External Seat Drain Cock with Spout

Efficient drainage

Quickly release the accumulated water, oil, and particulate matter at the bottom of the gas storage tank to prevent freezing and blockage of the gas path in winter.
Suitable for key components such as air dryers, air storage tanks, brake valves, etc.

Mip Internal Seat Drain Cock

High pressure sealing performance

Metal cone seal (or O-ring assist) ensures no leakage at 123 PSI pressure.
Certified by DOT FMVSS 121, the burst pressure is ≥ 360 PSI (2.5 times the working pressure).

Long Seat Drain Cock

Corrosion resistance and long lifespan

Brass+nickel plating treatment, resistant to salt spray and deicing agent corrosion, suitable for harsh environments such as cold chain logistics and mining vehicles. Supports 10000+cycles of opening and closing, with a long maintenance cycle.

Wing Handle Internal Seat Drain Cock

Security Design

Anti misoperation structure: Some models come with locking covers to prevent accidental opening and air pressure leakage.
Pull rope version: Can be operated from the outside of the vehicle chassis without drilling into the bottom of the vehicle for drainage.

 

Order Process

 

Inquiry---Provide us all clear requirements(total qty and package details).

1

>>

Quotation---Official quotation form with all clear specifications from our professional team.

2

>>

Making Sample - Confirm all quotation details and the final sample.

3

>>

Payment Terms---T/T 30% deposit before production, 70% balance against copy of BOL

4

>>

Production---Mass production.

5

>>

Shipping-- By sea or by air or by railway.

6

 

Installation steps

 

 

Check the drainage outlet of the gas storage tank to ensure that the interface is clean and free of impurities.

Screw in the Lever Handle drain valve to ensure thread alignment and avoid damaging the interface.

Use sealing tape or sealant to ensure no air leakage after installation.

 

Manually test the lever operation to ensure smooth opening and closing.

 

 

 

Packaging & Shipping

 

productcate-539-342

 

 

Our factory

 

Yijia Hydraulic Machinery adopts full CNC machining, with a workshop area of 3600 square meters, equipped with 100 sets of full machine tools, 60 sets of semi-automatic CNC machines, and 5 sets of inspection equipment.We have an annual production capacity of 3 million sets of brass fittings and air brake hose assemblies.

productcate-1-1

 

 

FAQ

 

Q: What equipment is this drain valve suitable for?

A: Suitable for air compressors, industrial air storage tanks, truck and freight air brake systems, as well as any pneumatic equipment that requires regular drainage.

Q: What is the maximum withstand voltage of this product?

A: The standard model can withstand a maximum pressure of 150 PSI, while the special customized model can withstand even higher pressures.

Q: What are the advantages of a lever handle?

A: Easy to operate, easier to control compared to knob style, suitable for applications with frequent opening/closing.

Q: How to ensure that the drainage valve will not be blocked?

A: Regularly maintain and clean the drainage outlet to avoid the accumulation of impurities such as sediment and rust.

Q: Is the drain valve suitable for extremely cold environments?

A: Used for temperatures ranging from -40℃to 120℃, but in extreme low temperatures (below -40℃), it is recommended to use a heated drainage system to prevent icing.

Q: Can I buy samples placing orders?

A: Yes.Please feel free to contact us.

Q: What is your lead time?

A: It depends on the order quantity and the season you place the order. Usually we can ship within 7-15 days for small quantity,and about 30 days for large quantity.

Q: What is your payment term?

A: T/T,Western Union,Alipay,MoneyGram,and Paypal.This is negotiable.

Q: What is the shipping method?

A: It could be shipped by sea,by air or by express(EMS,UPS,DHL,TNT,FEDEX and ect).Please confirm with us before placing orders.

As one of the most professional drain cocks manufacturers and suppliers in China, we're featured by quality products and good service. Please rest assured to buy customized drain cocks from our factory. Contact us for free sample.150 PSI Trunk Air Tank Valve, Drain Cock Bibb Needle Valve, External Seat Radiator Valve

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