--- product_id: 28896508 title: "Control Devices Air Safety Valve,1/4 In Inlet,220CFM ST25-1A250-1 Each" brand: "control devices" price: "$32.01" currency: USD in_stock: true category: "Control Devices" url: https://www.desertcart.us/products/28896508-control-devices-air-safety-valve-1-4-in-inlet-220cfm store_origin: US region: United States of America --- # 250°F max operating temperature 1/4 inch NPT threaded inlet with Vibra-Seal lock 250 psi precision relief pressure Control Devices Air Safety Valve,1/4 In Inlet,220CFM ST25-1A250-1 Each **Brand:** control devices **Price:** $32.01 **Availability:** ✅ In Stock ## Summary > ⚡ Elevate your system’s safety game with precision-engineered relief power! ## Quick Answers - **What is this?** Control Devices Air Safety Valve,1/4 In Inlet,220CFM ST25-1A250-1 Each by control devices - **How much does it cost?** $32.01 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/28896508-control-devices-air-safety-valve-1-4-in-inlet-220cfm) ## Best For - control devices enthusiasts ## Why This Product - Trusted control devices brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Leak-Proof Seal:** Silicon O-ring ensures a tight seal within ±10% of relief pressure, preventing costly leaks - • **High Flow Efficiency:** Delivers a robust 220+ CFM flow rate to protect your system under pressure - • **Precision Pressure Relief:** Pre-set to 250 psi with ±3% accuracy for ultimate safety assurance - • **Certified Safety Compliance:** ASME, UV, and NB marks guarantee trusted, industry-leading reliability - • **Corrosion-Resistant Durability:** Brass body and music wire spring engineered to withstand harsh environments ## Overview The Control Devices ST25-1A250 is a brass soft seat safety valve engineered for high-performance pressure relief at 250 psi. Featuring a 1/4 inch male NPT threaded inlet with Vibra-Seal thread lock, it offers corrosion resistance and reliable operation up to 250°F. Certified by ASME with UV and NB marks, this valve delivers a precise flow rate of 220 CFM, making it an essential, trusted component for industrial and home pressure systems. ## Description This Control Devices ST25-1A250 ASME safety valve has a brass body, a 250 psi relief pressure, a 1/4 inch male NPT threaded inlet connection, and a stainless steel pull ring for manual pressure relief. The valve's brass body, brass valve seat, and the zinc plated steel spring resist corrosion and can be used in operating temperatures up to 250 F. The pre-set relief pressure is accurate to within +/- 3 percent and a silicon O-ring provides a leak-proof seal to within +/- 10 percent of the relief pressure. This safety valve is American Society of Mechanical Engineers (ASME) safety rated and displays the UV mark for pressure vessel safety valves. It also displays the NB mark for certification in accordance with NB-501, National Board Certification of Pressure Relief Devices. This safety valve has a 219. 8823 cubic feet per minute (CFM) flow rate and is suitable for pressure relief applications such as in home construction or industrial air compressors. ## Features - Relief pressure pre-set to 250 psi with flow rate of 220 cfm - 1/4 NPT threaded inlet connection with Vibra-Seal thread lock - Brass construction and music wire spring for corrosion resistance - 250 F maximum temperature for use in high temperature applications - ASME safety rated with UV and NB marks ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0142ALR0K | | Best Sellers Rank | #209,860 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #193 in Relief Valves | | Brand Name | Control Devices | | Connector Type | Threaded | | Customer Reviews | 4.7 4.7 out of 5 stars (106) | | Exterior Finish | Stainless Steel,Steel,Zinc | | Inlet Connection Size | 0.25 inches | | Inlet Connection Type | National Pipe Tapered | | Item Dimensions | 3.5 x 1.2 x 1.2 inches | | Item Weight | 9.07 g | | Manufacturer | Control Devices | | Manufacturer Part Number | ST25-1A250 | | Material Type | Brass | | Maximum Pressure | 250 psi | | Model Number | ST25-1A250 | | Number of Ports | 1 | | Outlet Connection Size | 3.5 inches | | Outlet Connection Type | MNPT | | Set Name | ST25-1A250 | | Size | 5.04 cubic inches | | Specification Met | board,certification | | Thread Size | 0.25 inches | | Thread Type | NPT | | Unit Count | 1 Count | | Valve Type | safety valve | ## Product Details - **Brand:** Control Devices - **Exterior Finish:** Stainless Steel,Steel,Zinc - **Inlet Connection Size:** 0.25 inches - **Inlet Connection Type:** National Pipe Tapered - **Item dimensions L x W x H:** 3.5 x 1.2 x 1.2 inches - **Material:** Brass - **Maximum Operating Pressure:** 250 psi - **Number of Ports:** 1 - **Outlet Connection Size:** 3.5 inches - **Outlet Connection Type:** MNPT ## Images ![Control Devices Air Safety Valve,1/4 In Inlet,220CFM ST25-1A250-1 Each - Image 1](https://m.media-amazon.com/images/I/51JCmol9ayL.jpg) ## Frequently Bought Together - Control Devices ST25-1A250 ST Series Brass Soft Seat ASME Safety Valve, 250 psi Set Pressure, 1/4 Male NPT - SENCTRL 0-300 Psi Glycerin Liquid Filled Pressure Gauge, 2.5" Dial Size, 1/4" NPT Lower Mount, Stainless Steel Case, for Air Gas Water Oil Hydraulic Pressure Test - Control Devices - ST25-1A200 ST Series Brass ASME Safety Valve, 200 psi Set Pressure, 1/4" Male NPT --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/28896508-control-devices-air-safety-valve-1-4-in-inlet-220cfm](https://www.desertcart.us/products/28896508-control-devices-air-safety-valve-1-4-in-inlet-220cfm) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-08-22*