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Most orders ship within 1–2 business days via UPS. Larger equipment ships via freight carrier, and customers can use the shipping estimator on the product page for a location-specific quote. Local pickup is also available at the Fairfield, IL facility, typically ready within 4 hours.

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Farris Engineering 27DA33H-M20/S4 Pressure Relief Valve 1 in x 1 in NPT 300 barg Set Pressure Inspected Surplus - Appears Unused

$399.00 USD

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✓ 30-day returns on every item — return policy

ConditionInspected Surplus - Appears Unused MPN27DA33H-M20/S4 Stock #Stock # 0626-01821

30-day returns on every item. Photos reflect the actual item’s current condition — see our return policy and condition guide.

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Product Specifications

Manufacturer: Farris Engineering, Division of Curtiss Wright FCC
MPN / Model: 27DA33H-M20/S4
Product Type: Safety Relief Valve
Size and Orifice: 1 X 1 D
Set Pressure: 300 Barg
Back Pressure: 0 Barg
Capacity at 10 Percent Overpressure: 840 L/min
Serial Number: 934360 4 KC
Certifications: ASME UV, National Board NB, CE 0038

Product Description

This Farris Engineering safety relief valve is identified by type designation 27DA33H-M20/S4 as shown on the manufacturer nameplate. It is sized 1 by 1 with a D orifice, set at 300 barg with 0 barg back pressure, and rated for a capacity of 840 liters per minute at 10 percent overpressure. The valve carries ASME Section VIII UV certification along with a National Board stamp and a CE 0038 marking, and the nameplate lists serial number 934360 4 KC.

Buyers matching this exact Farris type number for replacement, spare inventory, or maintenance sourcing can use the confirmed nameplate data above to compare against their existing equipment or purchasing requirements. The unit includes threaded inlet and outlet connections and ships with protective port caps in place.

Stock # 0526-01821

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Frequently Asked Questions

Shipping & Handling

Most orders ship within 1–2 business days via UPS, but expedited same-day handling is available as an add-on to orders in cart. Larger equipment ships via freight carrier. Use the shipping estimator above for a location-specific quote. Local pickup is also available at our Fairfield, IL facility, typically ready within 4 hours.

Returns & Condition

All items are sold as-described based on the photos and condition listed. If an item arrives differing from its description, it may be eligible for return or refund. See our full condition guide for details on our grading terms.

Payment Options

We accept all major credit cards, PayPal, and Shop Pay. Purchase order and wire transfer payment is also available by selecting "Purchase Order / Wire Transfer" at checkout. Payment is due prior to shipment. Contact us for custom terms on established accounts. Tax exemptions are honored if proper documentation is provided.