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    Brass Vacuum Relief Valve, NPT Inlet Type, Vented Outlet Type

  • Item # 49EL63
  • Mfr. Model # 22397-0000LF
Brass Vacuum Relief Valve, NPT Inlet Type, Vented Outlet Type
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Prop 65 Compliance and Restrictions

Product Details

Ideal for protecting pressure vessels and hot water supply systems against negative pressure, this CASH ACME vacuum relief valve has a low-profile design with a slotted vent hole. Model opens on a 1” mercury vacuum and is designed for upright mounting. Relief valve is suitable for use in many commercial and domestic systems.
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Technical Specifications

Item # 49EL63
Mfr. Model # 22397-0000LF
UNSPSC #40141606
Catalog Page 2896
Shipping Weight 0.2 lbs
Country of Origin Taiwan *
Item Vacuum Relief Valve
Body Material Brass
Inlet Type NPT
Outlet Type Vented
Inlet Size 1/2"
Outlet Size 1/2"
Factory Set Pressure 5 psi
Pressure Range 0 to 200 PSI
BtuH 500,000
Steam Capacity (Lb./Hr.) 200
Disc Material Silicone
Overall Height 2-1/2"
Application Water Heater Pressure Relief
Overall Length 1-3/4"
Seat Material Silicone
Spring Material Stainless Steel
Temp. Range 0 Degrees to 210 Degrees F
Test Lever No
Compliance ANSI Z21.22/CSA 4.4
Standards ANSI Z21.22, CSA 4.4
* This product's country of origin is subject to change

Compliance and Restrictions

Prop 65 Compliance and Restrictions
This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to

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